Construction method of temporary passage based on deep foundation pit inner supporting structure
A supporting structure and construction method technology, which is applied to foundation structure engineering, preparation of building components on site, excavation, etc., can solve problems such as high comprehensive cost, low efficiency of foundation pit support and earthwork excavation, and long construction period
Inactive Publication Date: 2020-10-30
SHENZHEN GONGKAN GEOTECHN GRP +1
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[0004] The purpose of the present invention is to provide a temporary earth access system based on the support structure in the foundation pit, aiming to solve the problems of low efficiency of foundation pit support and earthwork excavation, long construction period and high comprehensive cost in the prior art
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[0037] In order to make the object, technical solution and advantages of the present invention clearer, 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.
[0038] The implementation of the present invention will be described in detail below in conjunction with specific embodiments.
[0039] In the drawings of this embodiment, the same or similar symbols correspond to the same or similar components; The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orien...
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The invention relates to the technical field of construction foundation pit supporting and earth excavation and discloses a construction method of a temporary passage based on a deep foundation pit inner supporting structure. The method comprises the following steps: (S11) a first layer of inner supporting is constructed; (S12) a first-grade temporary slope is constructed, and a first layer of earthwork is excavated to the bottom of a second layer of inner supporting; (S13) the second layer of inner supporting is constructed, a first-grade slope variant platform is poured between supporting beams of the second-layer of inner supporting, and the first-grade slope variant platform communicates with the first-grade temporary slope; (S14) a second-grade temporary slope is constructed, and a second layer of earthwork is excavated to the bottom of a third layer of inner supporting; (S15) the third layer of inner supporting is constructed, a second-grade slope variant platform is poured between supporting beams of the third layer of inner supporting, and the second-grade slope variant platform communicates with the second-grade temporary slope; and (S16) downward construction is carried out in the foundation pit according to S12-S15 in the same manner till excavation is realized on the bottom of the foundation pit. The construction method of the temporary passage based on the deep foundation pit inner supporting structure disclosed by the technical solution of the invention has the beneficial effects that a lot of time, manpower and financial resources are saved.
Description
technical field [0001] The patent of the present invention relates to the technical field of building foundation pit support and earthwork excavation, in particular, it relates to a temporary passage construction method based on the supporting structure in deep foundation pits. Background technique [0002] When the foundation pit is supported by internal support, criss-cross internal support beams are usually arranged inside the foundation pit to support the earth pressure on the side wall of the foundation pit and prevent the foundation pit from collapsing and causing safety accidents. The inner support beams are mainly made of reinforced concrete, the cross-sectional size is generally 800mm×800mm to 1000mm×1000mm, the horizontal spacing is generally 8-16m, and the vertical spacing is generally 4-6m. [0003] During the excavation of the foundation pit, a temporary ramp is usually set up to pass the dump truck. When internal support is used for foundation pit support, the...
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IPC IPC(8): E02D17/02E02D17/04E04G27/00
CPCE02D17/02E02D17/04E04G27/00
Inventor 雷斌叶坤李树清郑洽和陈名纪坚锋蒋鹏林卓南
Owner SHENZHEN GONGKAN GEOTECHN GRP