Adjacent foundation pit collaborative construction enclosure structure and its construction method
A technology of enclosure structure and support structure, which is applied in the direction of basic structure engineering, underwater structures, excavation, etc., can solve the problems that affect the construction period, and there are many constraints on the site that cannot be freely and quickly excavated, so as to improve the support capacity, Avoid movement, deal with deformation damage effects
Active Publication Date: 2021-09-28
CHINA FIRST HIGHWAY ENG CO LTD +2
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Problems solved by technology
However, for foundation pits adjacent to ultra-small distances and long distances, they cannot be excavated freely and quickly due to site constraints, and the next foundation pit can only be excavated after one of the foundation pits is capped, which seriously affects the construction period.
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[0059] figure 1 A structural diagram of an adjacent foundation pit coincidence construction enclosure structure is shown. See figure 1 The adjacent foundation pit coordinated construction enclosure structure 10 includes an adjacent foundation pit 100, a first support structure 200, a first anchor cable structure 300, a second support structure 400, a second anchor structure 500, a crown beam structure 600, and Pile anchor structure 700.
[0060] Wherein, the adjacent foundation pit 100 includes a first foundation pit 110 and a second foundation pit 130. For example, a road tunnel construction project uses the construction of the migration, the surrounding environment is complicated, the construction safety is high, the project has the following significant features: (1) Tunnel uses the migration method construction, the construction scale, 2.6 km The depth of the foundation pit excavation is 7-23.5m, and the width is 29m; (2) Highway tunnel is in the urban construction intensive ...
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The application provides an adjacent foundation pit collaborative construction enclosure structure and a construction method thereof, belonging to the technical field of foundation pit construction. The adjacent foundation pit cooperative construction enclosure structure includes an adjacent foundation pit, a first support structure, a first anchor cable structure, a second support structure, a second anchor cable structure, a crown beam structure and a pile anchor structure. The double-tensioned bolt penetrates the interlayer and the two ends of the opposite-tensioned bolt respectively resist the outer walls of the first support structure and the second support structure adjacent to the interlayer to form a pile-anchor composite structure, which can be used for adjacent foundation pits. Subsequent construction provides support conditions. Moreover, the crown beam structure is connected with the first support structure and the second support structure to form a whole. In addition, the pile-anchor composite structure can reduce the deformation of the foundation pit, improve the stability of the interlayer, and provide support for the adjacent foundation pit, so that the There is no need to set additional supporting structures in the first foundation pit and the second foundation pit. The first foundation pit and the second foundation pit are unblocked, so that the construction operations adjacent to the foundation pit can be freely constructed synchronously with large machinery.
Description
Technical field [0001] The present application relates to the field of construction technology in foundation, and in particular, there is a compliant construction enclosure structure of adjacent foundation pits. Background technique [0002] Urban traffic congestion has become a common problem facing urban development, building urban three-dimensional transportation and integrated transportation systems, which have an important role in mitigating municipal traffic pressure, improving urban environment, and improving land capacity, urban underground traffic has become a modern city traffic. An important part of. [0003] However, urban construction complex environment restrictions have brought many difficulties in the construction of urban road tunnels to urban road tunnels in urban construction, and the construction site is small, and the environmental standards are strict. The construction status of the project is more constructed by urban highway tunnels with a constraints that...
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IPC IPC(8): E02D17/04E02D29/02E02D5/22E02D5/74
CPCE02D5/22E02D5/74E02D17/04E02D29/02
Inventor 王礼华张伟马凌宇李洁文刘香林郑大轩魏国平张天舒李富相
Owner CHINA FIRST HIGHWAY ENG CO LTD