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A platform for research: civil engineering, architecture and urbanism
Non-drainage sinking construction method for large open caisson
The invention discloses a non-drainage sinking construction method for a large open caisson. The non-drainage sinking construction method comprises the steps that firstly, a foundation pit is excavated, and a sand cushion layer and a concrete cushion layer are constructed; secondly, open caissons are manufactured on the cushion layer in a segmented mode; thirdly, a plurality of rails are installed on the top face of the open caisson, a self-walking platform is arranged on the rails, and a telescopic boom excavator is carried on the self-walking platform; fourthly, after the concrete strength of the open caisson reaches 100% of the design strength, a small excavator in an open caisson compartment is adopted to break and remove a concrete cushion layer and a brick blank film, and a telescopic boom excavator is combined to discharge muck outwards; and fifthly, after the open caisson sinks to the designed elevation, bottom sealing is conducted, and open caisson sinking construction is completed. The construction method of manufacturing for multiple times and sinking for one time is adopted, the construction efficiency is improved, and the construction period is greatly shortened; and non-drainage sinking is adopted, the cost is saved, meanwhile, the influence on the surrounding environment is reduced, and the risks of soil gushing and sand gushing of the open caisson are reduced.
本发明公开了一种大型沉井不排水下沉施工方法，包括步骤一、开挖基坑，施工砂垫层及混凝土垫层；步骤二、在垫层上分节制作沉井；步骤三、在沉井顶面安装多条轨道，并在轨道上布设自行走平台，自行走平台上搭载伸缩臂挖机；步骤四、待沉井混凝土强度达到设计强度100％后，采用沉井隔舱内的小型挖机破除混凝土垫层和砖胎膜，并结合伸缩臂挖机将渣土进行外排；步骤五、沉井下沉到设计标高后，进行封底，完成沉井下沉施工。本发明采用分次制作、一次下沉的施工方法，提高了施工效率，大大节约了工期；采用不排水下沉，节省了成本，同时降低了对周边环境的影响，减小沉井涌土、涌砂的风险。
Non-drainage sinking construction method for large open caisson
The invention discloses a non-drainage sinking construction method for a large open caisson. The non-drainage sinking construction method comprises the steps that firstly, a foundation pit is excavated, and a sand cushion layer and a concrete cushion layer are constructed; secondly, open caissons are manufactured on the cushion layer in a segmented mode; thirdly, a plurality of rails are installed on the top face of the open caisson, a self-walking platform is arranged on the rails, and a telescopic boom excavator is carried on the self-walking platform; fourthly, after the concrete strength of the open caisson reaches 100% of the design strength, a small excavator in an open caisson compartment is adopted to break and remove a concrete cushion layer and a brick blank film, and a telescopic boom excavator is combined to discharge muck outwards; and fifthly, after the open caisson sinks to the designed elevation, bottom sealing is conducted, and open caisson sinking construction is completed. The construction method of manufacturing for multiple times and sinking for one time is adopted, the construction efficiency is improved, and the construction period is greatly shortened; and non-drainage sinking is adopted, the cost is saved, meanwhile, the influence on the surrounding environment is reduced, and the risks of soil gushing and sand gushing of the open caisson are reduced.
本发明公开了一种大型沉井不排水下沉施工方法，包括步骤一、开挖基坑，施工砂垫层及混凝土垫层；步骤二、在垫层上分节制作沉井；步骤三、在沉井顶面安装多条轨道，并在轨道上布设自行走平台，自行走平台上搭载伸缩臂挖机；步骤四、待沉井混凝土强度达到设计强度100％后，采用沉井隔舱内的小型挖机破除混凝土垫层和砖胎膜，并结合伸缩臂挖机将渣土进行外排；步骤五、沉井下沉到设计标高后，进行封底，完成沉井下沉施工。本发明采用分次制作、一次下沉的施工方法，提高了施工效率，大大节约了工期；采用不排水下沉，节省了成本，同时降低了对周边环境的影响，减小沉井涌土、涌砂的风险。
Non-drainage sinking construction method for large open caisson
一种大型沉井不排水下沉施工方法
DUAN XIAOJIAN (author) / FANG CUNXING (author) / LI DEJIE (author) / XIAO JING (author) / LI GUANYU (author) / LI GUANZHONG (author) / SHEN MENGLONG (author) / WU DINGWANG (author) / LUO JIEHAO (author) / WEN XINXIN (author)
2024-09-27
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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