Underwater pier bearing platform construction method
A construction method and technology for bridge piers, which are used in bridges, bridge parts, bridge construction, etc., can solve the problems of uneven strength of bridge pier caps and poor stability of supports, and achieve improved support stability, accurate reinforcement of steel bars, and uniform strength distribution. Effect
Inactive Publication Date: 2020-11-03
CHONGQING COMM CONSTR GRP +1
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Problems solved by technology
[0003] The purpose of the present invention is to provide a construction method for bridge pier caps in water to solve the technical problems of poor support stability and uneven strength of bridge pier caps during the construction process of existing bridge pier caps
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[0025] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0026] Preparation before construction, after the pile foundation inspection is qualified, calculate the bottom surface elevation of the ground beam according to the leaking pile foundation reinforcement cage top elevation, and roughly determine the excavation line according to the excavation depth. The foundation pit shall be excavated by an excavator. After excavating to the base, the base shall be compacted and leveled manually. The level after leveling shall be about 10cm lower than the...
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The invention relates to the technical field of building construction, in particular to an underwater pier bearing platform construction method. The method comprises the following steps: ground tie beam construction; pier column construction including, during pier column construction, pre-burying two pipes on a pier column, keeping the pre-buried pipes horizontal, sealing transparent adhesive tapes at two ends, completing pier column construction, installing a middle tie beam supporting system, removing the formwork of the pier column and installing round steel bars in the pipes after reaching70% of the design strength, hoisting first I-shaped steel pieces in the transverse direction of the bridge, wherein the center lines of the first I-shaped steel pieces are consistent with the longitudinal center lines of the two pier columns, the first I-shaped steel pieces are arranged at the upper ends of the pier columns and fixed to the round steel bars, and the two first I-shaped steel pieces are fixedly connected through two pull rods; and finally, middle tie beam construction, so that the support stability in the pier bearing platform construction process is greatly improved, steel barbinding in the pier bearing platform pouring process is more accurate, and the strength distribution of the poured pier bearing platform is more uniform.
Description
technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method for bridge pier caps in water. Background technique [0002] At present, in road and bridge construction, the construction of water caps of cross-river bridges can be divided into two types: cofferdam cast-in-place construction and prefabricated installation method. Most of the water caps use cofferdams Cast-in-place construction, including earth-rock cofferdam, reinforced concrete slab cofferdam, steel sheet pile cofferdam, steel box cofferdam, steel hanging box cofferdam, etc. For the construction of high pile caps in the water of bridges, due to the high height, the steel bars cannot be arranged vertically, the support stability is poor during the construction of the pier caps, and the pouring process is difficult to operate, resulting in uneven strength of the pier caps. Contents of the invention [0003] The purpose of the present inven...
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Login to View More IPC IPC(8): E01D21/00E01D19/02E02D27/14
CPCE01D19/02E01D21/00E02D27/14
Inventor 黄宁刘国强张猛张庆明刁吉陈勇曾潇李慧英邓乾章
Owner CHONGQING COMM CONSTR GRP