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A platform for research: civil engineering, architecture and urbanism
Construction method for RJP utilized reversely built enclosure structure
The invention relates to the field of foundation pit engineering enclosure structure construction, in particular to a construction method for a RJP utilized reversely built enclosure structure. The method comprises the following steps that grouting reinforcement treatment is conducted on surrounding stratums of an existing pile foundation and an existing bearing platform within the foundation pitengineering influence range through sleeve valve pipes; RJPs are constructed on the side, invading the enclosure structure, of the existing pile foundation; secant pile enclosure structures on the twosides of the existing pile foundation are constructed, and it is ensured that reinforced concrete piles are occluded with the RJPs; a soil body around the existing pile foundation is excavated, and anewly-added pile foundation and a newly-added bearing platform are constructed; and the site is restored, and other secant piles and foundation pit side walls are constructed. The construction of thefoundation pit enclosure structure can be completed under the condition of intrusion of the adjacent existing pile foundation, the stratum reinforcing strength requirement is met, the waterproof andstress problems are solved, the pile forming quality can be effectively guaranteed, disturbance to an existing building (structure) can be effectively reduced, and sedimentation and deviation of surrounding stratums and pipelines are effectively controlled.
本发明涉及基坑工程维护结构施工领域，特别是一种利用RJP桩逆做围护结构的施工方法。包括以下步骤：对基坑工程影响范围内的既有桩基和既有承台的周围地层，采用袖阀管进行注浆加固处理；对既有桩基侵入围护结构的一侧施作RJP桩；施作既有桩基两侧的咬合桩围护结构,确保荤桩与RJP桩咬合；开挖既有桩基周围土体，施作新增桩基和新增承台；场地恢复，施作其余咬合桩及基坑侧墙。能够满足在紧邻既有桩基入侵的情况下完成基坑围护结构的施工，满足地层加固强度要求，解决防水和受力问题，并且能够有效保证成桩质量以及减少对既有建(构)筑物的扰动，有效控制周边地层及管线的沉降和偏移。
Construction method for RJP utilized reversely built enclosure structure
The invention relates to the field of foundation pit engineering enclosure structure construction, in particular to a construction method for a RJP utilized reversely built enclosure structure. The method comprises the following steps that grouting reinforcement treatment is conducted on surrounding stratums of an existing pile foundation and an existing bearing platform within the foundation pitengineering influence range through sleeve valve pipes; RJPs are constructed on the side, invading the enclosure structure, of the existing pile foundation; secant pile enclosure structures on the twosides of the existing pile foundation are constructed, and it is ensured that reinforced concrete piles are occluded with the RJPs; a soil body around the existing pile foundation is excavated, and anewly-added pile foundation and a newly-added bearing platform are constructed; and the site is restored, and other secant piles and foundation pit side walls are constructed. The construction of thefoundation pit enclosure structure can be completed under the condition of intrusion of the adjacent existing pile foundation, the stratum reinforcing strength requirement is met, the waterproof andstress problems are solved, the pile forming quality can be effectively guaranteed, disturbance to an existing building (structure) can be effectively reduced, and sedimentation and deviation of surrounding stratums and pipelines are effectively controlled.
本发明涉及基坑工程维护结构施工领域，特别是一种利用RJP桩逆做围护结构的施工方法。包括以下步骤：对基坑工程影响范围内的既有桩基和既有承台的周围地层，采用袖阀管进行注浆加固处理；对既有桩基侵入围护结构的一侧施作RJP桩；施作既有桩基两侧的咬合桩围护结构,确保荤桩与RJP桩咬合；开挖既有桩基周围土体，施作新增桩基和新增承台；场地恢复，施作其余咬合桩及基坑侧墙。能够满足在紧邻既有桩基入侵的情况下完成基坑围护结构的施工，满足地层加固强度要求，解决防水和受力问题，并且能够有效保证成桩质量以及减少对既有建(构)筑物的扰动，有效控制周边地层及管线的沉降和偏移。
Construction method for RJP utilized reversely built enclosure structure
利用RJP桩逆做围护结构的施工方法
XIE CHUNLAI (author) / CAI GANG (author) / JIANG WEIQIANG (author) / XIONG ZUOBING (author) / HUANG XUEJUN (author) / ZHU PANFENG (author) / DONG HAILONG (author) / XU CHENGHAN (author) / WANG SHUAI (author) / KANG FENG (author)
2020-07-28
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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