Inversely-constructed underground continues wall with siamesed reinforcing cage

Abstract

The invention relates to an inversely-constructed underground continues wall with a siamesed reinforcing cage. The continues wall comprises the siamesed reinforcing cage and has no plain concrete region, thereby having no crack (the whole wall is penetrated through by the crack so as to be ruptured) and water leakage; the reinforcing cage is not suspended in a deep groove by means of integral forming but welded in the ditched deep groove, so that the continues wall does not need a heavy type crawler crane and the like, thereby reducing the construction cost; and the bottom end of a precast pile has been penetrated into a supporting layer of the soil, and the soil side pressure applied to the continues wall is finally borne by the piles, so that the wall among the piles does not need to be penetrated under a foundation pit of the main structure of a building to be built, thereby saving a mount of materials.

Description

Technical field: [0001] The invention relates to an underground continuous wall, in particular to an underground continuous wall with conjoined reinforcement cages constructed by the upside-down method. Background technique: [0002] The underground diaphragm wall is generally used for the support, enclosure and waterproofing of the foundation pit soil. When building a high-rise building on an open space surrounded by buildings, it is necessary to build an underground diaphragm wall around the excavated foundation before excavating the foundation. The existing building foundation is protected, and the construction steps of the formed underground diaphragm wall in the prior art are as follows: [0003] 1. According to the horizontal direction of the underground diaphragm wall, it is divided into several unit sections, and the construction of each unit section is carried out in sequence; [0004] 2. Concrete guide wall is poured, the underground diaphragm wall is guided and p...

AI Technical Summary

Problems solved by technology

[0011] 1. The construction process is complicated and the cost is high, requiring the use of some special large-scale machinery, such as a trench wall excavator when digging a deep trench, and a heavy-duty crawler crane when placing a steel cage in a deep trench, etc.

[0012] 2. Since the concrete walls of each unit section need to have continuity, each unit section can only be poured in sequence, and multiple unit sections cannot be constructed at the same time at intervals, so the construction period is longer

[0013] 3. The depth of the underground continuous wall varies from more than ten meters to tens of meters. If the concrete is poured at one time over the entire depth, the quality cannot be guaranteed, and voids are prone to occur

[0014] 4. Using the soil on both sides of the deep trench as a formwork, even if there is a mud retaining wall, it is inevitable that part of the soil will collapse. If the side close to the foundation pit collapses, the formed concrete will be bulging and uneven. At the same time, these If the package invades the main structure boundary of the building to be built, it needs to be chiseled

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