基础施工方案(中英文)1

基础施工方案

Method Statement of Foundation Construction

一、编制依据：Document Reference

1、CMEC伊拉克萨哈拉丁2×630MW燃油气电站招标文件

CMEC bidding document of Iraq Salah-Aldeen 2*630MW Power Plant

Project

2、土方与爆破工程施工及验收规范（GBJ 201-83）

“Code for construction and acceptance of earthwork and blasting

works” (GBJ 201-83)

3、《建筑地基基础施工质量验收规范》GB50202—2002

“Code for Acceptance of Construction Quality of Building

Foundation” GB50202—2002

4、《电力建设施工质量验收及评定标准》土建工程DL/T5210.1-2005

“Construction Quality Inspection and Evaluation Standards of

Electric Power Construction” Civil Works DL/T5210.1-2005

5、《混凝土结构工程施工质量验收规范》GB-50204-2002

“Specification for Acceptance of Concrete Structural Works”

GB-50204-2002

6、设计院相关图纸、技术文件以及其他相关规范、规程

Drawings, technical documents and other relevant

specifications/standards of the Design Institute;

二、工程概况：General Situation

本工程为伊拉克萨拉哈丁2X630MW燃油气电站工程新建工程项目，安装2台630MW中国生产的亚临界凝汽式汽轮发电机组，配两台燃油气锅炉。本工程抗震设防烈度为6o；基础持力层为?圆砾层，垫层采用碎石灌沥青材料，基础混凝土工程采用抗硫酸盐水泥。

The works for Iraq Salah-Aldeen 2*630MW Power Plant Project is a new project, which needs to install 2 sets of China made subcritical condensing turbine-generators and two oil and gas burned boilers. The seismic fortification intensity shall be 6 o and foundation bearing stratum is ? rounded gravel layer. The bedding will be made of gravel and asphalt -filled material, with foundation concrete works constructed by sulfate resisting cement.

三、施工准备：Construction Preparation

3.1 技术准备：Technical Preparation

1）组织图纸学习、自审与会审图纸，进行施工技术交底；

Arrange for studying on drawings, self-checking and joint

checking of drawings, and construction technology explanation;

2）特殊工种组织学习，进行上岗考核；

Provide training to special professional workers and examination

undertaken before taking their positions.

3）对模板进行配板设计，提取材料计划；

Formwork shall be properly designed to match board and material

plan prepared accordingly.

4）编制钢筋下料委托单，申报钢筋备料计划。

Prepare forms for steel cutting and submit reinforced steel

preparation plan.

3.2 劳动力配备Manpower Allocation

配备相应数量的管理人员、机械操作手以及各专业技术工人

Project management staff, mechanical operators, and various professional worker shall be allocated as per requirements.

3.3 设备、机具准备Preparation of Equipment, Machines and Tools

1）全站仪、经纬仪、水准仪、钢尺等测量仪器；

Total station, theodolite, level gauge, steel tape and other

measuring instruments;

2）挖掘机、装载机、自卸汽车等土方开挖机械；

Earthwork excavation equipment, including excavators, loaders,

and dump trucks etc.;

3）钢筋弯曲机、钢筋切断机等钢筋加工机具；

Steel bar bending machine, steel bar cutting machine and other

steel processing machines and tools;

4）圆盘锯、电刨等木工机具；

Disk saw, electric planer and other woodworking machines;

5）混凝土罐车、泵车、翻斗车、振捣器等设备、机具；

Concrete tank car, pump truck, dump truck, concrete vibrator,

and other machines and tools;

以上机具、设备、仪器均完成调试、检修并试运行。

Calibration, repairing and commissioning shall be carried out

to the above mentioned machines, tools, equipment and

instruments before put into use.

四、施工组织机构：Construction Organization

1）项目经理：李怀广； Project Manager: Li Huaiguang;

2）项目副经理：全成 Deputy Project Manager: Quan Cheng

3）技术负责人：苗安光 Chief Engineer: Miao An Guang

4）技术员： Engineers:

5）专业工长： Foremen:

6）安全员：杨磊 HSE supervisor: Yang Lei

五、施工顺序：Construction Sequence:

测量定位→基础土方开挖→基坑验槽→垫层→钢筋绑扎→模板安装→混凝土浇筑→模板拆除→基础混凝土质量验收→土方回填

Survey positioning → foundation excavation → foundation trench inspection → bedding course → formwork assembling→ pouring of concrete→ formwork dismantling→inspection and acceptance of foundation concrete →Earth work backfilling;

六、施工方法：Construction Method

6.1 土方工程Earthworks

1）基坑上部土层采用机械开挖，持力层顶300mm深度范围内由人工开挖并清底。机械开挖分两层进行，首层开挖挖除一二层土运至场外甲方

指定地点堆弃，次层开挖挖出第三层土堆放在合适位置以备拌合回填

使用。

The upper soil layers of foundation pit shall be excavated with

mechanical equipment, and the top bearing stratum with 300mm

depth range dug by manpower. Mechanical excavation shall be

conducted in two layers, the first layer excavated to 1st and 2nd

stratum and spoils transported outside for disposal at

designated area. The second layer shall be excavated to the 3rd

stratum which shall be stockpiled at site for mixing and

backfilling.

2）土方开挖坡度设为1：0.5，坡脚设置0.3m×0.3m排水沟，坡顶距坑边1m设立一米高安全围栏。

Earth excavation slope shall be 1:0.5, with drain ditch 0.3m

×0.3m excavated at slope toe. A one meter high security fence

shall be built at the slope top, 1m from the foundation pit 3）在土方开挖的过程中，由测控人员进行标高控制，开挖过程中，随时对坑底进行监控。承台基础内必须将浮土清理干净，然后向监理单位

申请基坑验槽，并做好施工及验收记录。

In the course of earth excavation, surveyors shall make good control of the elevation and provide close monitoring to the foundation bottom. The loose soil remains inside the foundations must be cleaned before applying for foundation trench inspection to the Consultant Engineer. Construction and acceptance records shall be taken according to requirements.

4）土方回填时，采用蛙式打夯机夯实，每层填土厚度不得大于25cm，夯实之前对填土初步平整。基坑应在相对两侧或四周同时进行回填与夯实。

Soil backfilling shall be compacted in layers by frog rammer, each filling thickness shall not be greater than 25cm and initial leveling made before such compaction. The backfilling and compaction to foundation pit shall be carried out simultaneously at two opposite sides or all around.

6.2 钢筋工程：Steel Works

1）进场钢筋必须有合格证及复检报告，按设计图纸进行配料并核对，钢筋的型号、尺寸、数量、钢号、弯钩、焊接质量，均符合要求，合格后方可进场。

The reinforcement steel mobilized to site shall be accompanied with quality certification and check reports. Steel bar processing and verification shall be carried out as per design drawings. The steel types, sizes, quantity, grade, hook, and welding quality shall meet the requirements. Only qualified steel bar is allowed to enter the site.

2）钢筋调直除锈：对于盘园钢筋，用调直机进行调直，同时也达到除锈的目的；根据现场实际情况，对于大批量的螺纹钢筋，使用抛丸除锈机除锈；局部少量螺纹钢筋采用电动钢丝刷除锈。

Steel bar straightening and rust removing: steel-bar

straightening shall be carried out with straightening machines and meanwhile remove the rust; according to the actual site situation, impeller blasting machine shall be used for rust removing of the mass of deformed bar, and electric wire brush used for rust removing to local small amounts of deformed bar. 3）钢筋制作在加工区完成，钢筋成品半成品运至现场按照施工平面布置图要求，按绑扎次序、型号、规格整齐堆放在现场规定位置，并进行标识，以便绑扎施工，避免产生错设钢筋。

Steel fabrication shall be completed in the processing area. The finished and semi-finished steel products shall be delivered to construction site and neatly stacked in the field subject to binding sequence, models, and specifications as specified in construction layout. The steel bars shall be properly identified for convenience of binding construction and avoiding the misuse. 4）钢筋绑扎前应对绑扎部位上所有杂物清理干净，并按施工图划线、布筋。

Before steel bar binding, all debris remaining on the steel bar shall be cleaned completely. Steel bar marking and distribution shall be carried out as per construction drawing.

5）承台底板钢筋绑扎时，为了保证底板保护层厚度，在底板钢筋与垫层之间，横向间隔1m设置砂浆筋条进行支垫；施工完的钢筋网上，严禁直接在其表面行走。

While carrying out steel bar binding to bottom slab of bearing platform, it shall ensure the thickness of floor protective layer.

Mortar fillet shall be provided horizontally at 1m interval between steel bar and bedding course for pedestal. It is not allowed to walk directly on the completed steel mesh.

6）短柱钢筋绑扎时，在承台四周按短柱施工高度搭设双排脚手架。短柱钢筋顶部，根据短柱截面尺寸采用钢管搭设井字框，然后按照短柱钢

筋绑扎间距在钢管上划线。钢筋绑扎时，根据钢管上的间距采用22#铁线绑扎牢固。短柱钢筋下部采用Φ18钢筋间距500mm ，斜拉与短柱和承台底板钢筋之间焊接加固。（具体施工方法见下图）

While binding steel bar of short column, double-row scaffolding shall be set up around the bearing platform and approach to the short column height. At top of reinforced bar of short columns, steel pipe shall be used to form cross frame according to section size of short column and thereafter mark line on the steel pipe as per binding spacing. Steel bar binding shall be firmly fixed with 22# wire and according to spacing marked on the steel pipe. The lower part of short column shall be φ18 steel bar with spacing 500mm. The steel bar for staying between short column and bearing platform bottom slab shall be welded firmly. (For construction methods, see below):

6.3 模板工程Formworks

1）本工程模板为定型组合钢模板，模板施工时，进入现场前先对表面清理，涂刷脱模剂。脱模剂涂刷要均匀，模板表面不得有气泡和脱模剂积痕。

短柱钢筋Short column steel bar 短柱钢筋绑扎示意图Schematic Diagram for Steel bar Binding of Short Column

Set shaped composite steel formwork will be used for this project.

The formwork surface shall be cleaned and brushed with release agent before entering to the site for construction use. The release agent shall be brushed evenly and the surface of formwork free from bubbles and marks of release agent.

2）承台四周采用钢管双排脚手架加固，为了保证基础承台模板在混凝土浇筑施工时不发生变形，采用?10钢筋制作拉杆进行对拉锚固加固，水平间距500mm，纵向间距500 mm设置。

Double-row scaffolding shall be provided for proper reinforcement around the bearing platform. In order to ensure no deformation of bearing platform formwork during concrete placement, ?10 bar shall be fabricated as tie rod for cross anchoring and reinforcement. The steel bar shall be set with horizontal spacing 500mm and longitudinal spacing 500mm.

3）基础短柱模板加固，首先在柱子四周采用6m钢管搭设双排脚手架。对于截面尺寸小于600*600mm，柱箍采用钢管，间距500 mm设置加固。

截面尺寸大于600*600mm的短柱，采用【16槽钢配置柱箍，与Φ14的螺栓间距500 mm加固。为了保证短柱模板的钢度和稳定性，所有短柱内部纵横两个方向，采用?10拉筋，纵横间距500mm设置。

Double-row scaffolding of l6m steel pipes shall be used for Reinforcement to the short column foundation. For short column with section size less than 600*600mm, steel pipes with spacing 500mm shall be used as column stirrup for reinforcement. For short column with section size over 600*600mm, channel steel 【16 shall be used as column stirrup incorporated withΦ14 bolts and with spacing 500mm. In order to ensure the rigidity and stability of short column formwork, ? 10tie-bar shall be provided horizontally and longitudinally with spacing 500mm inside the short column.

4）模板施工质量要求，模板施工过程中按照各项指标严格控制，对模板的轴线位置、截面尺寸、垂直度、平整度、钢度以及模板加固脚手架，实行过程监督、班组自检，层层把关，为下道工序施工做好充分的准备工作。

Quality of formwork construction shall be strictly controlled according to requirements. Close monitoring shall be carried out to the axis position, section size, verticality, rigidity, and formwork reinforcing scaffold so as to prepare completely for next working procedure.

6.4 混凝土工程Concrete Works

1）混凝土的配合比严格按配合比设计要求，采用集中搅拌站拌制合格后罐车运至施工现场用泵车进行浇筑。罐车进行水平运输中，从混凝土搅拌站出口至混凝土入模时间不得超过45分钟，若发生离析或分层现象，须对混凝土进行二次搅拌。

Concrete mixing ratio shall be designed strictly according to design requirements. The concrete shall be mixed in the mixing plant and transported to site with truck tanker for placement.

The concrete transport time from mixing plant to site formwork shall not 45 minutes. If any segregation and stratification occurs, secondary mixing of concrete is necessary.

2）混凝土浇筑采用泵车浇筑，配合使用施工溜槽。浇筑混凝土时，设专人看模，注意观察模板动态，发现有松动部分即时加固处理。

Concrete pouring shall be carried out with pump truck incorporating with chute. Persons specially assigned shall observe the formwork so as to deal with any loosen form and take necessary reinforcement action.

3）基础承台及短柱混凝土浇筑时，要严格控制每层混凝土厚度和混凝土坍落度，每层不得超过500mm，坍落度过小分层厚度要随时调整。在振捣上一层时，应插入下一层50mm左右，以消除两层之间的施工接缝。

上下层间隔不得超过2小时，以30分钟左右为宜。

While placing concrete to foundation bearing platform and shot column, actions shall be taken to strictly control the each layer concrete thickness and concrete slump. The concrete thickness each shall not exceed 500mm and if slump is too small it shall adjust concrete thickness timely. While taking vibration to the upper layer, the vibrator shall be inserted into the lower layer around 50mm so as to eliminate construction joint between the two layers. Concreting interval time between upper and lower layer shall not be more than 2 hours, with optimum time about

30 minutes.

4）振捣，采用插入式振动器振捣。其移动间距不大于作业半径的1.5倍，一般为30cm-40cm，振捣时应快插慢拔，插点均匀排列，逐点移动，不得遗漏，不得过分振捣，以免混凝土离析。一般每一插点时间为20-30秒，以表面泛灰浆为准。

Inserted vibrator shall be used for concrete vibrating with movement spacing not more than 1.5 times the radius of concreting, generally 30cm-40cm. Vibration shall be carried out in such a way that fast inserting in and slow pulling out with even inserting points. Vibration shall be conducted point-by-point and with no missing point. Over vibrating is not allowed so as to prevent from concrete segregation. Generally vibrating at each point shall remain 20-30 seconds till mortar overflows on the surface.

5）在混凝土浇筑完毕后，水泥工按照测量技术员给出的标高线进行找平。

对混凝土表面进行压光、抹面。混凝土强度达到相应要求以上时，方可在其上进行下道工序的施工。

After completion of concrete pouring, leveling shall be carried out according to specified elevation mark. The concrete surface

shall be toweled finish. Only when the concrete strength meets the requirements can be allowed to carry out the next working procedure.

6）施工缝处理，在下一步混凝土浇筑前，将施工缝处凿毛、表面冲洗，涂净水泥浆二遍，再铺10mm厚的水泥砂浆（原混凝土配合比去掉石子），再继续浇灌混凝土。

Construction joint treatment: before further concrete pouring, concrete chiseling to the construction joint and surface washing shall be carried out and brushed with two coats of cement paste and then followed with cement mortar 10MM thick (same concrete mixing ratio but aggregate removed)for continuous concrete placement.

7）混凝土浇筑时，任意抽取混凝土运输罐车中的混凝土，在取样员和监理工程师的监督下进行试块制作和混凝土坍落度试验。

Random concrete sampling shall be taken from concrete truck tanker for making concrete cubes and concrete slump test at presence of consultant engineer.

8）混凝土浇筑完毕后在承台表面覆盖一层草垫，派专人每天进行浇水养护，养护时间应符合设计及相关要求。

The fresh concrete of bearing platform shall be covered with straw mattress. Concrete curing shall be carried out every day by assigned persons with curing time complying with the design and requirements.

6.5 脚手架工程Scaffolding Works

1）脚手架必须设置纵横向扫地杆。纵向扫地杆应采用直角扣件固定在距底座上皮不大于200mm处的立杆上。横向扫地杆亦应采用直角扣件固定在紧靠纵向扫地杆下方。

Scaffolding must be equipped with vertical and horizontal rail.

The vertical rail should be fixed with right-angle couplers on

the vertical pipe which is not more than 200mm above the base.

The horizontal rail shall be fixed with right-angle couplers

immediately below the vertical rail.

2）双脚手架短边设置一道剪刀撑，长边成“八”字型设置两道剪刀撑，剪刀撑斜杆与地面成45°角。

One cross bracing shall be set at the shorter side of double

scaffold and two cross bracing provided to the longer side. The

bracing shall be 45 ° angle to the ground.

3）脚手架拆除时，应从上至下逐拆除，不得上下同时施工。

Scaffolding dismantling shall be carried out in order from top

to bottom. Upper and bottom dismantling at the same time is not

allowed.

七、质量保证措施Quality Assurance Measures

1）施工前必须依方案或作业指导书对参与施工人员进行技术交底，没有交底不得施工。

Technical explanation according to the construction method

statement or work instructions to the persons involved in the

construction is quite necessary before construction, or

otherwise it is not allowed to start construction.

2）严格执行项目制定的各项规章制度及监理下发的有关制度，按程序施工。及时做好资料的整理工作。

Construction shall be carried out according to established

program and strictly in compliance with established rules and

regulations specially issued for the project. Meanwhile document

filing shall be carried out in a timely manner.

3）严格执行建筑工程施工质量验收统一标准。

United standard for construction quality acceptance shall be

strictly implemented during the construction.

4）严格执行行业质量标准，从管理入手，切实抓好本工程施工质量。

Strict implementation of quality standards: construction

quality control shall be carried out starting from the

management.

5）严格执行三级检查验收制度，加强质量管理及检查工作，确保优质工程。

Strict implementation of the three-level inspection and

acceptance system, strengthen quality control and inspection so

enable to ensure quality project.

6）做好测量放线工作，严格控制好中心轴线的位移，施工前要认真复核，检查。

Pay attention to survey and setting out works and strictly

control the center axis line displacement. Repeat checking and

inspection shall be carried out carefully before construction.

7）建立质量管理体系

Establishing quality management system;

八、质量通病及防治措施：

The quality common fault and prevention measures:

1）麻面：模板清理干净，浇筑上一层混凝土与下一层混凝土时间间隔较大时，对上面的水泥灰浆进行清理干净。隔离剂涂刷均匀，不得漏刷，

混凝土振捣时至气泡排出为止，拆模时间不宜过早。

Concrete pockmark: clean up the formwork, if time interval

between concrete casting to upper layer and lower layer is too

long, the cement paste remains shall be cleaned completely.

Release agent shall be brushed evenly and with no missing place.

Concrete vibrating shall not be stopped until the air bubbles

appear. Earlier dismantling of formwork is not allowed.

2）蜂窝、漏筋：严格控制配合比坍落度，混凝土自由倾落高度不宜超过2米。钢筋绑扎后不得上去行走，以保护保护层不会受到破坏。

Honeycomb and steel bar missing: strict control of concrete slump,

free pouring of concrete height should not be more than 2 meters.

It is not allowed to walk on reinforced steel bar after binding

so as to avoid damage to the protection layer.

3）模板及支撑系统失稳：泵送混凝土采取分层浇筑，严禁集中浇筑；根据浇筑计划，对关键位置模板进行重点检查和加固。

Instability of formwork and supporting system: Pumping concrete

shall be placed in layers and concentrated pouring is not allowed;

Concrete pouring shall be carried out according to the placement

plan and the formwork at key position shall be reinforced and

checked carefully.

4）裂缝：控制入模温度，对浇筑完的混凝土进行养护。

Concrete crack: control the temperature of casting concrete and

carry out concrete curing to fresh concrete.

九、工程目标：Project objectives:

1）分项合格率达到100%。

Qualification rate of sub-divisional work: 100%.

2）混凝土强度合格率100%，杜绝质量事故和机械设备事故。

Qualification rate of concrete strength: 100%. Try to eliminate

poor quality and equipment accidents.

十、职业安全健康、环境管理措施和文明施工

Occupational health and safety, environmental

management and civilized construction

10.1 职业安全健康、环境保护技术措施

Technical Measurement for occupational health and

safety, and Environment Protection

1）现场施工的机械应保证在施工时不得漏油、运土车辆应将后车厢挡板安装上，并保证能正常使用、保证在现场运送弃土不得漏土，要求进入现场的车辆不得随意鸣笛，要慢速行驶。The machinery equipment should be ensured with no oil leakage during the construction.

Earth-moving vehicles shall be installed with tailgate stops which work correctly so as to ensure no dropping of soils during transportation. The vehicle access to site is not allowed to whistle at will and shall drive slowly for safety purpose. 2）施工时，要求进入现场的施工人员必须严格听从指挥，不得随意行事，自卸汽车与反铲的操作应相互配合。当汽车进入指定场地运土以后，应及时鸣笛，汽车装土结束，可以运走必须鸣笛。The construction personnel must subject to united direction, action at will is not allowed. The dump truck and backhoe operation shall be well arranged for better cooperation. The trucks entering to the specified area for earth-moving shall alarm for notice. While loading completed and ready to move the vehicle shall also alarm for safety notice.

3）进入现场必须按规定配戴安全帽、系牢帽带。Workers entering to the site are required to wear on helmets.

4）施工用电必须由专业人员持证上岗操作，并遵守安全用电规则，保证用电设备正常使用。机械、用电出现故障应及时维修。机械操作人员必须持证上岗，安全操作，杜绝违章施工。Constructional electrical power must be controlled under licensed professional persons who shall abide by safety rules for electricity to ensure normal use of electric equipment. In case of machinery and electricity failure, repair shall be conducted in a timely manner. Machine operators must have licenses and operate safely. Construction with violation behavior shall be prohibited strictly.

5）作业人员严禁在坡底边休息、避雨、避风。开挖前作业人员应熟悉地下埋管及电缆的走向图，在埋管及电缆走向内挖土时应派专人监护。

The operating personnel are strictly prohibited to take shelter from rain and wind and rest at the bottom of slope. Before the excavation, the operating personnel should be familiar with the diagrams of underground buried pipes and cables, and specially assigned persons shall be provided during excavation along direction of buried pipes and cables.

10.2 文明施工Civilized Construction

1）基础土方开挖用挖掘机操作工及驾驶员要有职能部门颁发的有效证件，并持证上岗，机械性能要求运行良好。The operators and drivers for foundation excavation shall have valid certificates issued by functional department. Those persons must take their positions with such certificates and shall ensure good condition of mechanical equipment.

2）土方机械、混凝土运输机械所经过的道路和场所应保证无撒落散土、混凝土，运土车行驶的道路要保持清洁，做到一日一清。The road and field where earth and concrete transport equipment vehicles passing through shall be free from dropped soils and concretes.

Road where earth-moving vehicles travelling on shall be kept clean every day.

3）进入现场的施工人员必须经过工程安全文明施工规定的专项培训，且考试合格后，方可上岗。The construction personnel entering to the site must be trained in safety and civilized construction. They shall pass the examination before taking their positions.

4）彻底消灭“五头”“五底”，做到十无，即无烟头、砖头、木头、钢筋头、焊条头，散砂底、剩灰底、砂浆底、废土底等建筑垃圾清除转运到指定地点，保持施工场地的干净整洁。All the construction debris

and spoils, including cigarette butts, brick, wood, steel head, electrodes, sand, lime, mortar, and waste soil etc., shall be removed out of the field to designated area for disposal. The construction field shall be kept clean and tidy.