Construction method for hydraulic self creeping formwork of high pier column of bridge
A construction method and climbing formwork technology, applied in bridges, bridge parts, bridge construction, etc., can solve problems such as hidden safety hazards, high construction costs, and inability to meet the requirements of high pier column construction, so as to improve construction quality and reduce construction costs. cost, and the effect of reducing potential safety hazards
Inactive Publication Date: 2018-11-20
CHINA MCC17 GRP
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Problems solved by technology
[0002] With the continuous updating and continuous improvement of bridge construction technology, the number of projects under construction and construction of long-span bridges across rivers and valleys is increasing, and most of them are located in complex terrain conditions. The construction height of bridge piers exceeds 100 meters. The section form of the pier column transitions from solid to hollow and thin-walled, so that the requirements for construction safety and stability of high pier columns are increased; traditional pier column construction methods such as erecting external scaffolding, but the construction cost is high, and there are often safety hazards. Hidden dangers, can no longer meet the requirements of high pier column construction in complex construction environment
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[0060] In the construction of a certain bridge, the hydraulic self-climbing formwork construction method of a bridge high pier column proposed by the present invention is adopted. No. T2K1+349, the terminal stake number is T3K2+377, the bridge is divided into two sections on the left and right, the net width of the single bridge deck is 14.75 meters, and the left and right sections of the bridge span are 8×40+96.5+180+96.5+8×40. The scheme of simply supported first and then continuous T-beam is adopted, the main span adopts continuous rigid frame, prestressed concrete (post-tensioned) T-beam; the pier of the main bridge adopts thin-walled pier with equal cross-section, and the approach bridge adopts cylindrical pier, rectangular solid pier and etc. Sectional hollow thin-walled piers.
[0061] The pier body of 9# main pier adopts a rectangular hollow pier with double limbs of equal cross-section. The bridge direction is 0.8m; the bottom of the single-leg pier is a solid sectio...
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The invention relates to a construction method for a hydraulic self creeping formwork of a high pier column of a bridge and belongs to a construction method of bridge construction. The construction method is characterized in that by adopting a creeping formwork rack body, high altitude three-dimensional construction of the high pier column of the bridge is converted into two-dimensional plane construction, and a structure and a construction platform are integrally stressed as far as a creeping formwork rack body platform is concerned through structural concrete, a preburied part and a hangingplate. The construction method comprises the following steps: creeping formwork equipment designing and processing; creeping formwork equipment system inspecting; first mold pouring; first time mounting of the creeping formwork equipment; second mold pouring; second time mounting of the creeping formwork equipment; mold plate creeping; creeping finishing of formwork equipment mounting; creeping formwork system mounting and inspecting; safe stability checking calculation; measuring and monitoring; third mold pouring; taper pin pulling out and mold disassembling; hanging plate mounting and taperpin inserting and anchoring; creeping formwork rack mounting; cross beam, anti-falling wedge and enclosure end pull rod mounting; mold supporting, buried part mounting and concrete pouring; taper pinpulling out and mold disassembling; hanging plate mounting and taper pin inserting and anchoring; stress climbing pole mounting; and creeping cycling. The construction method is safe and reliable andhigh in work efficiency.
Description
technical field [0001] The invention belongs to a construction method for bridge construction, in particular to a self-climbing formwork construction method for high pier columns Background technique [0002] With the continuous updating and continuous improvement of bridge construction technology, the number of projects under construction and construction of long-span bridges across rivers and valleys is increasing, and most of them are located in complex terrain conditions. The construction height of bridge piers exceeds 100 meters. The section form of the pier column transitions from solid to hollow and thin-walled, so that the requirements for construction safety and stability of high pier columns are increased; traditional pier column construction methods such as erecting external scaffolding, but the construction cost is high, and there are often safety hazards. Hidden dangers can no longer meet the requirements of high pier column construction in complex construction ...
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IPC IPC(8): E01D21/00E01D19/02
CPCE01D19/02E01D21/00
Inventor 张显杨徐华清董恭廷
Owner CHINA MCC17 GRP