Deep foundation pit bracing method for controlling foundation pit deformation under the support system
A support method and technology for deep foundation pits, applied in excavation, infrastructure engineering, construction, etc., can solve the problems of complex surrounding environment, high protection requirements, and high requirements for foundation pit deformation control, so as to reduce exposure time and reduce unsupported time. , Control the effect of foundation pit deformation
Active Publication Date: 2019-01-22
CHINA CONSTR EIGHT ENG DIV CORP LTD
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Problems solved by technology
However, in the deep foundation pits in the downtown area, the surrounding environment is complex, the protection requirements are high, and the deformation control requirements of the foundation pits are high.
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[0024] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0025] Cooperate with reference Figure 1 to Figure 4 as shown, Figure 1 to Figure 4 It is a schematic diagram of the specific construction process of the deep foundation pit support method used to control the deformation of the foundation pit under the support system of the present invention.
[0026] The deep foundation pit support method for controlling the deformation of the foundation pit under the support support system of the present invention comprises:
[0027] combine figure 1 and figure 2 As shown, the earthwork of the braced part 1 of the braced support system for excavating a d...
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The invention discloses a deep foundation pit supporting method for controlling deformation of a deep foundation pit in a double-support supporting and protecting system. The deep foundation pit supporting method comprises the steps of excavating soil at the middle parts of double-support parts, corresponding to the double-support supporting and protecting system, in the deep foundation pit; constructing first support beams at the middle parts of the double-support parts; excavating soil at the two ends of the double-support parts, corresponding to the double-support supporting and protecting system, in the deep foundation pit; constructing second support beams at the two ends of the double-support parts, so as to ensure that the second support beams are combined with the first support beams to seal the deep foundation pit at the double-support parts; excavating soil at non-double-support parts, corresponding to the double-support supporting and protecting system, in the deep foundation pit; and constructing non-double-support part support beams at the non-double-support parts, so as to seal the entire deep foundation pit. According to the deep foundation pit supporting method, the soil at the double-support parts is firstly excavated, construction is carried out from the middle part to the two ends, after the first support beams in the middle of the double-support parts are retracted, the parts at the two ends of the double-support parts are quickly sealed through utilizing the second support beams, supports at the double-support parts are sealed, the time when the foundation pit is not supported is shortened, and the foundation pit deformation is controlled.
Description
technical field [0001] The invention relates to the technical field of building construction, in particular to a deep foundation pit support method for controlling foundation pit deformation under a support system. Background technique [0002] With the continuous development of urbanization, the level of underground space design and construction has been greatly improved. However, in the deep foundation pits in the downtown area, the surrounding environment is complex, the protection requirements are high, and the deformation control requirements of the foundation pits are high. In foundation pit construction, earthwork excavation and horizontal support system are constructed alternately until the excavation reaches the pit bottom elevation. In the brace system, the brace plays a decisive role in bearing the internal force of the foundation pit. However, it takes a long time from the completion of each step of earthwork excavation to the closure of the support. How to cont...
Claims
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IPC IPC(8): E02D17/02E02D17/04
CPCE02D17/02E02D17/04
Inventor 于海申裴鸿斌苏亚武亓立刚王宝德刘鹏柯子平孙加齐杨红岩高辉戚明浩汤淼
Owner CHINA CONSTR EIGHT ENG DIV CORP LTD