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1、余热锅炉房基础专项施工方案Construction Scheme of HRSG Hall Foundation编制依据及说明Compilation Basis and Description1.1 编制依据 Compilation basis 余热锅炉房基础施工图 F681S-T030307；图纸会审记录；电力建设施工质量验收及评定规程第1部分：土建工程DL T 5210.1-2005建筑地基基础工程施工质量验收规范 GB50202-2002混凝土结构工程施工质量验收规范 GB50204-20021.1 Compilation basis“Construction Drawings of H
2、RSG Foundation Hall”F681S-T030307;“ Recordof Counter-sign of Drawings”;“Quality Acceptance and Valuation Code of Electric Power Construction, Section 1, Civil Work Part”GB50202-2002“Quality Acceptance Specification of Building Sub-grade and Foundation Work” GB50202-2002“Quality Acceptance Specificat
3、ion of Concrete Structure Work” GB50204-2002 1.2编制说明1 .2 Description 1#、 2#、3#余热锅炉基础总体布局相同，结构形式一样，功能也相近，故3 个机组基础施工同时考虑，编写在同一方案中； The general plan layouts of 1#、 2# and 3# HRSG foundations are the same, as well as the structures and functions. So three HRSG foundations work will be considered into on
4、e construction scheme. 余热锅炉基础包括垫层、基础承台、连系梁、短柱等几部分，本方案同时考虑，不 另行编制方案； The HRSG foundation covers bedding course, foundation cushion cap, collecting beams and short columns etc which will be compiled in this scheme. 基础与上部框架采用螺栓连接，螺栓及固定架由厂家提供； Adopt Bolts connecting on the foundation and top frames, the
5、 bolts and fixed frames will be supplied by manufacturer. 地基处理采用钢筋砼灌注桩，该部分已由打桩公司完成，基础土石方开挖已在工程 桩交接前基本完成，本方案中均不再赘述。 The reinforced concrete caisson pile is used for sub-grade treatment. This job has been finished by pile driving company, As earth and stone excavation of the foundation has been basica
6、lly completed before pile driving, so there is no other instruction about it in this scheme again.2 工程概况 Summary of Work余热锅炉露天布置，分为1#、2#、3#基础，分别布置于燃机房区域轴线B-1413、B-9& B-43,横向12.8m，纵向47.4m。锅炉基础轴线间相距 48.5m。The outdoor arrangement of HRSG is separated by three parts, 1#, 2# and# foundations, respectivel
7、y set on the axis lineB-14 13、 B-9 8 and B-4 3of GT hall area. The lateral length is 12.8m, longitudinal length is 47.5. The space between HRSG foundation axis lines is 48.5m.余热锅炉基础，承台型除了CT-5、CT-6为大体积基础，CT-1CT-4为14个桩基基础，其余均为独立基础 19 个。基础间采用连系梁连成整体。基础承台底标高 -4.0m 。The cushion cap is CT-5 and CT-6 as bi
8、g volume foundation, beside that from CT1 to CT4 total quantity of piling foundations is 14, others are isolated foundations with 19 of the quantity. It is linked as a whole body by collar beams among foundations. The bottom elevation of foundation cushion cap is -4.0m.基础与上部框架采用螺栓连接，螺栓埋入基础短柱内。基础砼强度等
9、级，垫层 C10 素混凝土，承台及连系梁 C30,基础柱段采用C40.砼保护层基础50mm基础梁30mm 其余部位30mm钢筋I级为HPB235级为HRB335.The foundation and top frames are connected by bolts which are embedded in foundation short column. The strength grade of concrete is as following: C10 plain concrete is used for bedding course, C30 for cushion cap and
10、connecting beams, C40 for foundation column section. The protective layer of concrete, foundation girder and other places respectively are 50mm, 30mm and 30mm. Steel reinforcement grade I is HP235, and grade n is HRB335.施工程序 Construction Procedure.根据总体进度计划安排，余热锅炉基础施工顺序，总体先施工3#余热锅炉基础，依次再进行 2#、 1#锅炉基础
11、。 1#、 2#、 3#施工时可并行、交叉进行。According to the overall progress scheme of construction, The construction of HRSG foundation sequence is under hereby: Firstly construction for 3# HRSG foundation in generally, the following step is construction of 2#、 1# HRSGfoundation. The construction of these foundations
12、 can be processed alternatively and parallelly.余热锅炉基础分三块区域施工，H6- H1.3轴间桩基基础及系梁为第一区域，CT-5、 CT-6大体积基础为第二区域，H1.3轴以南的独立基础为第三区域。It is divided in to 3 areas for HRSG foundation construction. The pile foundation and conneting beam from axis line H6 to H1.3 is regarded as first area, the sec ond area is lar
13、ge volume con crete foun datio n for CT-5 and CT-6, the third area is isolated foundation in south position of axis line H1.3.锅炉基础施工程序为：地基验槽一 垫层支模一垫层浇筑C10一 承台(或系梁) 钢筋绑扎支模验收浇砼C30一 养护拆模 回填施工缝处理螺栓施工一短柱钢筋绑扎 支模一浇筑砼C40 一养护拆模回填The HRSG foun datio n con struct ion seque nee is as followi ng: In specti on of
14、 foun dati on subsoil Formwork support ing for bedd ing course C10 Con cretepouri ng for bedd ing course steel bar binding for cushi on cap (or conn et ingbeam) support formwork inspectionand acceptanee C30 Concrete pouringcuring demolitionof formwork back filling treatmentofcon struct ion joi nts S
15、crew bolts worki ng steel bar bidi ng for short colu mn support formworks C40 con crete pouri ng curi ng removal of formwork backfilli ng.3主要分项工程施工方法3. Main Construction Methods of Subsection Work1、测量放线1. Survey and sett ing out1.1主要仪器：水准仪、RTS-632全站仪、50m钢卷尺。1.1 Main Instruments: Level gauge, RTS-632
16、total station and 50msteel measuring tape.1.2根据现场原始定位点及锅炉平面布置图，选择合适位置设置控制点，每次定位防线 前对控制点进行复核。1.2 Select proper location to set control point according to site originalposition and plan layout of HRSG,recheck the control point prior to locating and sett ing out.1.3工作流程1.3 Work Flow :轴线用极坐标法测设。C10素砼垫层施工后，用全
