A double-row pile-beam vertical anchor support system and its construction method
A double-row pile and system technology, applied in excavation, sheet pile wall, foundation structure engineering and other directions, can solve the problems of complicated procedures, poor supporting effect, complicated construction, etc., to simplify the procedure, reduce the occupied underground space, The effect of shortening the construction period
Inactive Publication Date: 2016-06-15
CHINA STATE CONSTRUCTION ENGINEERING CORPORATION
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Problems solved by technology
[0008] The purpose of the present invention is to provide a double-row pile-beam vertical anchor support system and its construction method, to solve the problem of poor support effect, Technical problems of cumbersome construction and complicated procedures
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[0028] Examples see Figure 1-3 As shown, this double-row pile beam vertical anchor support system includes a front row of slope protection piles 1 located on the side slope of the foundation pit 1 and a stable ground 8 located outside the foundation pit (that is, located in the front row of slope protection piles 1 and existing building In the stable ground 8 between the foundation 7 or the red line area, underground obstacles, etc.) the rear slope protection piles 9 and the connecting beams 2 connected between the pile tops of the front slope protection piles and the rear slope protection piles.
[0029] The connecting beams are lattice beams, consisting of a front-row pile top beam 2.1 rigidly connected to the top of the front slope protection piles, a rear-row pile top crown beam 2.2 rigidly connected to the top of the rear slope protection piles, and a rear-row pile. The anchor connecting beam 2.3, which is outside the top crown beam and is relatively parallel to the top cro...
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A double-row pile-beam vertical anchor support system and a construction method thereof, wherein the support system includes a front row of slope protection piles located at the side slope of a foundation pit, a rear row of slope protection piles located in a stable stratum outside the foundation pit, and a The connecting beam between the pile tops of the front row of slope protection piles and the pile tops of the rear row of slope protection piles, the connecting beam is a lattice beam, and a row of vertical prestressed anchor rods is also arranged on the outside of the rear row of slope protection piles. The upper part of the row of vertical prestressed anchor rods is flexibly connected to the anchor rod connecting beam in the lattice beam, and the lower part of the row of vertical prestressed anchor rods is anchored in the stable formation outside the rear row of slope protection piles. The support system and its construction method are equipped with vertical prestressed anchor rods, so the stress condition of the pile body of the entire structure is improved, the entire support structure is optimized, and the entire support structure becomes more reasonable.
Description
Technical field [0001] The invention relates to a building foundation pit supporting system and a construction method thereof. Background technique [0002] In the design and construction of foundation pit support, the common support types include (composite) soil nail support, pile (wall) anchor support, pile (wall) support, etc., and two or more of them. At present, most of the foundation pit supports of engineering projects adopt the above-mentioned support type. [0003] In recent years, with the acceleration of the urban construction process, the number of buildings in the urban area has increased sharply, the building density has become higher and higher, land resources have become more and more tense, and the available space on the ground and underground has become less and less. It is forced to be constructed next to and very close to existing buildings, so while making full use of the land, it also causes the following problems: [0004] (1) Since the foundation pit of the...
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IPC IPC(8): E02D17/04E02D5/76
Inventor 马庆松宋福渊郭恒油新华胡贺祥杨春英韩建聪
Owner CHINA STATE CONSTRUCTION ENGINEERING CORPORATION