龙城国际项目深基坑支护安全专项施工方案.pdf

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2、 aoverview answersnswers scores,ascores,and percend percentage applicatintage applicati on pron problemoblem of key is:accorof key is:accor ding to meading to meaning,(1)determining,(1)determi ne standard vne standard v olume(units 1)(2)find associate volume rate corresponds tolume(units 1)(2)find a

3、ssociate volume rate corresponds to relationship,Theo relationship,The n inn in-line sol-line solution.Categution.Categ ory fraction multipliory fraction multipli cation worcation word problem score Divid problem score Divi sion applicatision applicati onsons engiengineeringneering problem problem X

4、V,a subject:revieproblem problem XV,a subject:revie w of the measurement of the amount of caw of the measurement of the amount of ca pacitpacity,measuremey,measurement and units of measurement of comnt and units of measurement of com mon units of measurement and theirmon units of measurement and the

5、irsignificasignificance in rate 1,nce in rate 1,currecurrency,lengtncy,length,area,volh,area,vol ume,unit sizeume,unit size,volume,volume,weight a,weight and rate.(Omitted)2,commonly usend rate.(Omitted)2,commonly use d time units and their relatid time units and their relati onshionships.(Slightly)

6、with a measurementps.(Slightly)with a measurementunits Zunits Zhijianhijian of of polyof of poly 1,and of method 2,a1,and of method 2,a ndnd poly methodpoly method 3,and of method and poly method of relati3,and of method and poly method of relati onship meaonship measuremesurementnt distadistancence

7、 of methodof method 1,and tool mea1,and tool mea suremesurement 2,and estimates 16,and subjent 2,and estimates 16,and subje ct:geometryct:geometry preliminary knowlepreliminary knowle dge(1)dge(1)-li-line ane and and angle reviewngle review contecontent linent line,and,andsegment,and Ray,and vertica

8、l,asegment,and Ray,and vertical,a ndnd parallel,aparallel,and and angle anglengle angle of classification(slightly)17,and subjeof classification(slightly)17,and subje ct:geometry prect:geometry pre liminary knowleliminary knowle dge(2)-plane gradge(2)-plane gra phiphics review contecs review content

9、 triangle,ant triangle,a nd end edges shapedges shaped,and round,and fan axisymmetric graphid,and round,and fan axisymmetric graphi cscs perimeter and area comperimeter and area com binatibination graphics of area subjeon graphics of area subje ct:Preliminary kct:Preliminary k nowlnowledge(3)edge(3)

10、-review-review of soliof solid content categd content category 1-d shapes arory 1-d shapes ar e dividee divided intd into:cylio:cylinder ander andnd cone 2,columcone 2,colum n is divin is divided ided into:nto:cuboicuboid,square 3,d,square 3,cone conecone cone of the features of cuboids aof the feat

11、ures of cuboids a ndnd cubes relaticubes relationshiponship betweebetween characteristin characteristi cs of circs of circularcular cone is sligcone is slightly solihtly solid surfad surface area and volce area and vol ume 1,ume 1,size 2,tablsize 2,table.e.和和贵州省遵义市碧云路龙城国际项目工程贵州省遵义市碧云路龙城国际项目工程（深基坑专项（

12、深基坑专项)施施工工方方案案施工单位：编制人：审核人：审核日期：relationship,establirelationship,establi sheshed equivalent relatid equivalent relati onshionship 14,ap 14,and subject:and subject:a pplipplication prcation problem(4)-scores aoblem(4)-scores a nd percend percentage applicatintage applicati on pron probloblem review c

13、ontentem review content overview aoverview answersnswers scores,ascores,and percend percentage applicatintage applicati on pron problemoblem of key is:accorof key is:accor ding to meading to meaning,(1)determining,(1)determi ne standard vne standard v olume(units 1)(2)find associate volume rate corr

14、esponds tolume(units 1)(2)find associate volume rate corresponds to relationship,Theo relationship,The n inn in-line sol-line solution.Categution.Categ ory fraction multipliory fraction multipli cation worcation word problem score Divid problem score Divi sion applicatision applicati onsons engiengi

15、neeringneering problem problem XV,a subject:revieproblem problem XV,a subject:revie w of the measurement of the amount of caw of the measurement of the amount of ca pacitpacity,measuremey,measurement and units of measurement of comnt and units of measurement of com mon units of measurement and their

16、mon units of measurement and theirsignificasignificance in rate 1,nce in rate 1,currecurrency,lengtncy,length,area,volh,area,volume,unit sizeume,unit size,volume,volume,weight a,weight and rate.(Omitted)2,commonly usend rate.(Omitted)2,commonly use d time units and their relatid time units and their

17、 relati onshionships.(Slightly)with a measurementps.(Slightly)with a measurementunits Zunits Zhijianhijian of of polyof of poly 1,and of method 2,a1,and of method 2,a ndnd poly methodpoly method 3,and of method and poly method of relati3,and of method and poly method of relati onship meaonship measu

18、remesurement distant distancence ofof method method 1,and tool mea1,and tool mea suremesurement 2,and estimates 16,and subjent 2,and estimates 16,and subje ct:geometryct:geometry preliminary knowlepreliminary knowle dge(1)dge(1)-li-line ane and and angle reviewngle review contecontent linent line,an

19、d,andsegment,and Ray,and vertical,asegment,and Ray,and vertical,a ndnd parallel,aparallel,and and angle anglengle angle of classification(slightly)17,and subjeof classification(slightly)17,and subje ct:geometry prect:geometry pre liminary knowleliminary knowle dge(2)-plane gradge(2)-plane gra phiphi

20、cs review contecs review content triangle,ant triangle,a nd end edges shapedges shaped,and round,and fan axisymmetric graphid,and round,and fan axisymmetric graphi cscs perimeter and area comperimeter and area com binatibination graphics of area subjeon graphics of area subje ct:Preliminary kct:Prel

21、iminary k nowlnowledge(3)edge(3)-review-review of soliof solid content categd content category 1-d shapes arory 1-d shapes ar e dividee divided intd into:cylio:cylinder ander andnd cone 2,columcone 2,colum n is divin is divided ided into:nto:cuboicuboid,square 3,d,square 3,cone conecone cone of the

22、features of cuboids aof the features of cuboids a ndnd cubes relaticubes relationshiponship betweebetween characteristin characteristi cs of circs of circularcular cone is sligcone is slightly solihtly solid surfad surface area and volce area and vol ume 1,ume 1,size 2,tablsize 2,table.e.和和目目录录第一节、第

23、一节、工程概况工程概况 3第二节、第二节、编制依据编制依据 34第三节、第三节、支护方案支护方案48第四节、第四节、基坑变形监测及因周边管廊沉降而采取的措施基坑变形监测及因周边管廊沉降而采取的措施811一、工程概况一、工程概况1 1。1 1龙城国际项目工程位于遵义市老城碧云路，东临工商银行办公楼及瑞安花园,南侧为碧云山庄、西临粮油大厦、北临碧云路主干道。1.21.2本工程地下 4 层、A 幢地上 3F+9F，高42。3m;B 幢地上3F+19F,高 75.3m；C 幢地上 3F+24F，高 87。3m；现有基坑周长约297m，基坑开挖深度 13.00m，基坑面积约 5000m，总建筑面积约6

24、万 m.1 1。3 3本工程为现浇钢筋混凝土框架剪力墙结构，基本靠红线而建。建筑物周边环境相当复杂，四周均有地下管廊及管线(其基础埋深在914m 之间，而且管廊侧壁和顶部回填土质量较差），管廊距基坑东侧、北侧和南侧均较近,对基坑安全影响较大，开挖过程存在不可预测的困难情况，因此深基坑支护有较大难度,必须在保证基坑安全的前提下,综合考虑施工方案的经济及施工安全。施工难度经多方案比较，综合权衡，选择了采用土钉222relationship,establirelationship,establi sheshed equivalent relatid equivalent relati onshion

25、ship 14,ap 14,and subject:and subject:a pplipplication prcation problem(4)-scores aoblem(4)-scores a nd percend percentage applicatintage applicati on pron probloblem review contentem review content overview aoverview answersnswers scores,ascores,and percend percentage applicatintage applicati on pr

26、on problemoblem of key is:accorof key is:accor ding to meading to meaning,(1)determining,(1)determi nene standard vstandard v olume(units 1)(2)find associate volume rate corresponds tolume(units 1)(2)find associate volume rate corresponds to relationship,Theo relationship,The n inn in-line sol-line

27、solution.Categution.Categ ory fraction multipliory fraction multipli cation worcation word problem score Divid problem score Divi sion applicatision applicati onsons engiengineeringneering problem problem XV,a subject:revieproblem problem XV,a subject:revie w of the measurement of the amount of caw

28、of the measurement of the amount of capacitpacity,measuremey,measurement and units of measurement of comnt and units of measurement of com mon units of measurement and theirmon units of measurement and theirsignificasignificance in rate 1,nce in rate 1,currecurrency,lengtncy,length,area,volh,area,vo

29、lume,unit sizeume,unit size,volume,volume,weight a,weight and rate.(Omitted)2,commonly usend rate.(Omitted)2,commonly use d time units and their relatid time units and their relati onshionships.(Slightly)with a measurementps.(Slightly)with a measurementunits Zunits Zhijianhijian of of polyof of poly

30、 1,and of method 2,a1,and of method 2,a ndnd poly methodpoly method 3,and of method and poly meth3,and of method and poly meth od of relatiod of relationship meaonship measuremesurement distant distancence of methodof method 1,and tool mea1,and tool mea suremesurement 2,and estimates 16,and subjent

31、2,and estimates 16,and subje ct:geometryct:geometry preliminary knowlepreliminary knowle dge(1)-lidge(1)-li ne ane and and angle reviewngle review contecontent linent line,and,andsegment,and Ray,and vertical,asegment,and Ray,and vertical,a ndnd parallel,aparallel,and and angle anglengle angle of cla

32、ssification(slightly)17,and subjeof classification(slightly)17,and subje ct:geometry prect:geometry pre liminary knowleliminary knowle dge(2)-plane gradge(2)-plane gra phiphics review contecs review content triangle,ant triangle,a nd end edges shapedges shaped,and round,and fan axisymmetric graphid,

33、and round,and fan axisymmetric graphi cscs perimeter and area comperimeter and area com binatibinati on graphics of area subjeon graphics of area subje ct:Preliminary kct:Preliminary k nowlnowledge(3)-reviewedge(3)-review of soliof solid content categd content category 1-d shapes arory 1-d shapes ar

34、 e dividee divided intd into:cylio:cylinder ander andnd cone 2,columcone 2,colum n is divin is divided ided into:nto:cuboicuboid,square 3,d,square 3,cone conecone cone of the features of cuboids aof the features of cuboids a ndnd cubes relaticubes relationshiponship betweebetween characteristin char

35、acteristi cs of circs of circularcular cone is sligcone is slightly solihtly solid surfad surface area and volce area and vol ume 1,ume 1,size 2,tablsize 2,table.e.和和墙和护坡桩相结合的支护方案，并在土方开挖过程中根据实际情况，随时调整方案，确保基坑安全。二、编制依据、编制依据该施工组织设计方案的编制主要依据：招标文件及图纸；现行规范、规程以及现场实际情况。主要规范、规程如下：建筑边坡工程技术规范（GB50330-2002)建筑与市

36、政降水工程技术规范（JGJ/T111-1998）建筑基坑支护技术规程（JGJ120-1999）基坑土钉支护技术规程（CCECE96：97)锚杆喷射混凝土支护技术规范（GB50086-2001）建筑地基基础工程施工质量验收规范（GB502022002）建筑施工安全检查标准（JGJ591999）建筑工程施工质量验收统一标准（GB50300-2001)建筑机械使用安全技术规程（JGJ33-2001）三、支护方案三、支护方案该边坡主要采用桩板墙、预应力锚索、桩间板构造锚杆、喷射砼面板支护组合的临时性支护体系。总体上不能先开挖后支护,有放坡条件尽量采用放坡开挖，无放坡条件，需直立开挖，必需本着边坡开挖、

37、边支护原则，分段分层施工、严禁无序开挖。流程为:施工桩-开挖 3m 左右施工第一排锚索施工桩间板-第一排锚索张拉锁定继续下开挖 3m，周而复始完成桩锚-3relationship,establirelationship,establi sheshed equivalent relatid equivalent relati onshionship 14,ap 14,and subject:and subject:a pplipplication prcation problem(4)-scores aoblem(4)-scores a nd percend percentage applica

38、tintage applicati on pron probloblem review contentem review content overview aoverview answersnswers scores,ascores,and percend percentage applicatintage applicati on pron problemoblem of key is:accorof key is:accor ding to meading to meaning,(1)determining,(1)determi ne standard vne standard v olu

39、me(units 1)(2)find associate volume rate corresponds tolume(units 1)(2)find associate volume rate corresponds to relationship,Theo relationship,The n inn in-line sol-line solution.Categution.Categ ory fraction multipliory fraction multipli cation worcation word problem score Divid problem score Divi

40、 sion applicatision applicati onsons engiengineeringneering problem problem XV,a subject:revieproblem problem XV,a subject:revie w of the measurement of the amount of caw of the measurement of the amount of ca pacitpacity,measuremey,measurement and units of measurement of comnt and units of measurem

41、ent of com mon units of measurement and theirmon units of measurement and theirsignificasignificance in rate 1,nce in rate 1,currecurrency,lengtncy,length,area,volh,area,volume,unit sizeume,unit size,volume,volume,weight a,weight and rate.(Omitted)2,commonly usend rate.(Omitted)2,commonly use d time

42、 units and their relatid time units and their relati onshionships.(Slightly)with a measurementps.(Slightly)with a measurementunits Zunits Zhijianhijian of of polyof of poly 1,and of method 2,a1,and of method 2,a ndnd poly methodpoly method 3,and of method and poly method of relati3,and of method and

43、 poly method of relati onship meaonship measuremesurement distant distancence ofof method method 1,and tool mea1,and tool mea suremesurement 2,and estimates 16,and subjent 2,and estimates 16,and subje ct:geometryct:geometry preliminary knowlepreliminary knowle dge(1)dge(1)-li-line ane and and angle

44、reviewngle review contecontent linent line,and,andsegment,and Ray,and vertical,asegment,and Ray,and vertical,a ndnd parallel,aparallel,and and angle anglengle angle of classification(slightly)17,and subjeof classification(slightly)17,and subje ct:geometry prect:geometry pre liminary knowleliminary k

45、nowle dge(2)-plane gradge(2)-plane gra phiphics review contecs review content triangle,ant triangle,a nd end edges shapedges shaped,and round,and fan axisymmetric graphid,and round,and fan axisymmetric graphi cscs perimeter and area comperimeter and area com binatibination graphics of area subjeon g

46、raphics of area subje ct:Preliminary kct:Preliminary k nowlnowledge(3)edge(3)-review-review of soliof solid content categd content category 1-d shapes arory 1-d shapes ar e dividee divided intd into:cylio:cylinder ander andnd cone 2,columcone 2,colum n is divin is divided ided into:nto:cuboicuboid,s

47、quare 3,d,square 3,cone conecone cone of the features of cuboids aof the features of cuboids a ndnd cubes relaticubes relationshiponship betweebetween characteristin characteristi cs of circs of circularcular cone is sligcone is slightly solihtly solid surfad surface area and volce area and vol ume

48、1,ume 1,size 2,tablsize 2,table.e.和和板-拉挖流程，直至基坑开挖至地下室标高.1 1、各支护段桩砼强度为 C30，桩径为 1。2m，抗滑桩嵌入拟建筑物基坑底标高以下不小于 3m；桩上设置预应力锚索，各支护段桩间距详见设计施工图。2 2、桩顶设置连接梁(简称冠梁），冠梁宽度 1。0m、高度 0.8m。3 3、桩间板喷射砼强度为 C30,最小厚度为 300mm，挂网配筋双层双向 6。5250，加强配筋 122000，面板加强钢筋必须植入桩身不小于 350mm。4 4、桩施工，为避免基坑大面积垮塌，选择隔孔开挖，开挖时必须作好护壁,在锚索位置预埋 150mm 预埋管

49、件，方向与锚索一致，倾角与锚索相同，桩身混凝土强度为 C30；5 5、预应力锚索钻孔深度应超过实际孔内锚索长度 0。51.0m，定位偏差不大于 100mm，偏斜度不大于 5%，孔桩偏差不大于 5mm,锚固段必须位于中风化泥岩地层，长度见各支护剖面,钻孔完成后，采用高压空气清洗钻孔内石屑，随后安置锚索,定位装置每2m 设置一个，保证锚索居中，锚索注浆应将压浆管伸至孔底（距孔底宜为 100 mm）。灌浆材料应按实验室提供配合比进行施工。本设计预应力锚索制作时自由段设四层防护，即船底漆、刷黄油、外套塑料管和 M30 水泥砂浆.待水泥砂浆和混凝土垫墩强度达到85后，方可进行锚索张拉。预应锚索张拉前，应

50、对张拉设备进行标定，张拉应按规定程序进行，在编排张拉顺序时，应考虑相4relationship,establirelationship,establi sheshed equivalent relatid equivalent relati onshionship 14,ap 14,and subject:and subject:a pplipplication prcation problem(4)-scores aoblem(4)-scores a nd percend percentage applicatintage applicati on pron probloblem revie