Foundation pit roadbed backfilling structure
A foundation pit and roadbed technology, which is applied in infrastructure engineering, underwater structures, roads, etc., can solve the problem of weak connection between the concrete retaining wall and the side wall of the foundation pit, and achieve the effect of convenient limit and firm connection.
Inactive Publication Date: 2020-09-25
安徽杰智建设工程有限公司
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Problems solved by technology
[0004] The above existing technical solutions have the following defects: the concrete retaining wall is only connected to the side wall of the foundation pit through anchor rods, which will make the connection between the concrete retaining wall and the side wall of the foundation pit weak
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[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0031] Such as figure 1 with figure 2 As shown, it is a foundation pit roadbed backfill structure disclosed by the present invention, which includes a foundation pit 1, two concrete retaining walls 2 and an air bubble concrete layer 3, and each concrete retaining wall 2 is pre-embedded in sequence along its length direction with multiple Embedded pipes 21, each embedded pipe 21 is internally threaded with a lead screw 4, one end of the lead screw 4 is sleeved with a first rotating part 41, and the other end is fixedly connected with a drill bit 42; image 3 As shown, the end of the lead screw 4 away from the drill bit 42 is provided with a horizontal groove 43 , and the limit device 5 is installed in the horizontal groove 43 .
[0032] Such as figure 2 with image 3As shown, the limiting device 5 includes a horizontal pipe 51 that is rotatably connected...
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The invention relates to a foundation pit roadbed backfilling structure. The foundation pit roadbed backfilling structure comprises a foundation pit, two concrete retaining walls and a bubble concretelayer; a plurality of embedded pipes are embedded in each concrete retaining wall; a lead screw is in threaded connection with the interior of each embedded pipe; one end of each lead screw is fixedly sleeved with a first rotating part, and the other end of each lead screw is fixedly connected with a drill bit; a horizontal groove is formed in one end of each lead screw; a limiting device is installed in each horizontal groove; the limiting device comprises a horizontal pipe and a driving mechanism; a plurality of groups of limiting mechanisms are sequentially arranged on the horizontal pipealong the axial direction of the horizontal pipe; each limiting mechanism comprises a plurality of connecting blocks sequentially arranged in the circumferential direction of the horizontal pipe; a connecting rod is hinged to the end, away from the horizontal pipe, of each connecting block; a limiting block is hinged to the end, away from the corresponding connecting block, of each connecting rod;and a through hole allowing the corresponding limiting block to slide in the radial direction of the horizontal pipe is formed in the side wall of each horizontal groove. According to the foundationpit roadbed backfilling structure of the invention, the concrete retaining walls and the side wall of the foundation pit can be connected more firmly.
Description
technical field [0001] The invention relates to the technical field of building construction, in particular to a foundation pit subgrade backfill structure. Background technique [0002] The foundation pit is an earth pit dug at the foundation design position according to the base elevation and foundation plane size. It is a temporary project, and its function is to provide a space for the foundation masonry to be carried out in accordance with the position specified by the design. With the development of the city, there are more and more cases of construction of subgrade and pavement at the backfilled foundation pit, such as reserved hoisting holes for rail transit, directional drilling working wells, pipe jacking caissons, and excavation of viaduct caps. [0003] For the prior art, please refer to the Chinese invention patent application document with the publication number CN111041917A, which discloses a foundation pit subgrade backfill structure, which is applied in the ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): E01C3/00E02D17/18E02D17/02E02D29/02
CPCE01C3/00E02D17/02E02D17/18E02D29/02
Inventor 张艳丽崔志鹏樊宗祥郭圣赖计学
Owner 安徽杰智建设工程有限公司