Method for arranging large deep foundation pit bidirectional annular ramps

Abstract

The invention relates to the technical field of traffic, and particularly relates to a method for arranging large deep foundation pit bidirectional annular ramps. A foundation pit is included. The method comprises the following steps that 3, the ground height is calculated, the proper size is determined, supports are arranged on the periphery of the foundation pit, and the supports are supported through cast-in-place piles, a first annular reinforced concrete inner support and a second annular reinforced concrete inner support; 4, the bidirectional annular ramps are arranged between the ground and the second annular reinforced concrete inner support along the inner side edge of the first annular reinforced concrete inner support and the inner side edge of the second annular reinforced concrete inner support to be connected with the foundation pit; and 6, a short ramp is arranged on the ground to be connected with the bidirectional annular ramps on the two sides. The device is reasonable in design, and through the arrangement of the supports and the bidirectional annular ramps, vehicle instruments needed by construction can conveniently enter a site during construction, soil blocks generated by excavation can be conveniently conveyed out, and safety of the construction process is improved.

Description

technical field [0001] The invention relates to the field of transportation, in particular to a method for setting a two-way circular ramp in a large deep foundation pit. Background technique [0002] When constructing some complex large-scale comprehensive squares, most of them need to build multi-layers underground. During the construction process, foundation pits need to be excavated. When excavating foundation pits, a large number of excavating equipment and vehicles are required. In addition, it is necessary to transport a large number of soil clods produced by excavation to avoid the accumulation of soil clods and thus affect the construction of the foundation pit. How to get the muck vehicles and mechanical equipment down to the bottom of the pit ensures that the transportation of muck trucks is convenient and the efficiency of excavation is increased. The key to deep foundation pit construction, so how to set up the ramp of the trestle bridge is very important. In th...

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Problems solved by technology

[0002] When constructing some complex large-scale comprehensive squares, most of them need to build multi-layers underground. During the construction process, foundation pits need to be excavated. When excavating foundation pits, a large number of excavating equipment and vehicles are required. In addition, it is necessary to transport a large number of soil clods produced by excavation to avoid the accumulation of soil clods and thus affect the construction of the foundation pit. How to get the muck vehicles and mechanical equipment down to the bottom of the pit ensures that the transportation of muck trucks is convenient and the efficiency of excavation is increased. The key to deep foundation pit construction, so how to set up the ramp of the trestle bridge is very important. In the conventional foundation pit support design, a straight slope for the lower foundation pit will be set in the middle of the foundation pit, but the conventional inclined trestle ramp cannot A circular route is formed, and the entrance range of the trestle ramp is fixed and narrow, which is not conducive to the walking of muck trucks, and the excavation efficiency is low

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