Construction method for basement raft foundation with tower crane foundation

Abstract

The invention discloses a construction method for a basement raft foundation with a tower crane foundation. The construction method specifically comprises the following steps: excavating a tower cranefoundation pit, arranging double-layer reinforcing steel bars of the tower crane foundation, pre-embedding four groups of pre-embedded foundation bolts, separately sleeving four steel sleeves at theouter sides of each group of pre-embedded foundation bolts, welding the lower ends of the steel sleeves to upper-layer reinforcing steel bars of the tower crane foundation, and enabling the upper endsof the steel sleeves to be as high as top elevation of a to-be-constructed raft foundation; pouring concrete into the tower crane foundation pit, integrally pouring and forming the steel sleeves andconcrete in the tower crane foundation, mounting a tower crane, separately connecting and fixing four connecting ends of a tower crane foundation section to the pre-embedded foundation bolts in the corresponding four steel sleeves, and enabling the tower crane to normally work; normally arranging ribs for the raft foundation, pouring concrete, performing once construction to accomplish the raft foundation, and curing and forming the raft foundation. The raft foundation in the construction method can be once integrally constructed, so that construction efficiency is improved, and the problems such as reinforcing steel bar binding, waterproof treatment, secondary hole filling and the like of a reserved area of the tower crane foundation.

Description

technical field [0001] The invention relates to the field of buildings, in particular to a basement raft foundation construction method with a tower crane foundation. Background technique [0002] In recent years, with the continuous development of my country's construction industry, more and more high-rise group buildings have been built in large and medium-sized cities, and overall garage raft projects are not uncommon. Considering factors such as reducing the secondary handling of building materials and the transportation distance in the field, tower cranes often Standing next to the main building, the conventional tower crane foundation is generally located on the foundation or the cap foundation of the pile foundation, and then connected to the connection end of the foundation section of the tower crane through pre-embedded anchor bolts. This technology is relatively mature. [0003] However, during the construction of the tower crane foundation located in the basement, ...

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Problems solved by technology

[0005] Aiming at the deficiencies of the above-mentioned prior art, the technical problem to be solved by the present invention is: to provide a basement raft foundation construction method with a tower crane foundation, which does not need to consider the reservation of the tower crane foundation, and the raft foundation can be constructed as a whole at one time, which improves the Construction efficiency, solving the problems of steel bar binding, waterproof treatment and secondary hole filling in the reserved area of ​​tower crane foundation

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