Construction method for 48m sectional beam of passenger railway based on BIM technology
A technology for passenger dedicated lines and construction methods, applied in bridges, bridge construction, erection/assembly of bridges, etc., can solve the problems of difficult to guarantee construction quality, high cost, slow construction progress of large-span beams, etc., to shorten the construction period and improve the construction. Efficient, easy-to-understand effects
Inactive Publication Date: 2016-06-01
CHINA RAILWAY NO 3 GRP CO LTD
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[0003] In order to solve the problems of slow construction progress, high cost and difficulty in guaranteeing construction quality of long-span beams, the present invention provides a construction method for 48m segmental beams of passenger dedicated lines based on BIM technology
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[0037] The 48m section beam construction method of the passenger dedicated line based on BIM technology described in the present invention is to divide the beam body into figure 2 The 11 sections (beam sections) shown are prefabricated in the factory and then transported to the bridge site to assemble them with a mobile support bridge erecting machine. The construction process of assembling the sections into a bridge by applying prestress is The bridge-building machine with mobile supports is the carrier for the assembly of prefabricated segments on the top of the pier. When assembling the segments, the bridge-building machine is moved to the spans of the girders to be assembled, and then the prefabricated segments transported from the prefabrication yard Lift and support it on the bridge-building machine, adjust the line shape and camber, carry out wet joint construction after passing through the steel strands, and finally stretch the prestress to complete the system conversi...
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The invention belongs to the technical field of sectional beam construction of railways, roads, municipal engineering and intercity rail transits. In order to solve the problems such as slow construction progress, high cost, difficulty-to-guarantee construction quality and the like of a large-span beam, the invention provides a construction method for a 48m sectional beam of passenger railway based on a BIM technology. The construction method is characterized being a construction process of dividing a beam body into a plurality of beam sections, and jointing each beam section into a bridge by applying pre-stress; the assembly construction process of the beam sections comprises prefabrication of beam sections, transportation and lifting of the beam sections, strand pulling by pre-stress, wed joint construction, pre-stress tensioning, duct grouting for sealing anchor as well as bracket unloading and system conversion; and each construction process is pre-simulated by adopting the BIM technology. Compared with the conventional construction method, the construction method can effectively guarantee that in a reinforcement binding process, reinforcement does not have collision and can effectively guarantee precision of a corrugated pipe reserved position and the like by utilizing functions such as three-dimensional modeling, visualization and the like of the BIM technology, and has the advantages of high construction efficiency, high construction precision, a short construction period, a high safety coefficient and the like.
Description
technical field [0001] The invention belongs to the technical field of segmental beam construction for railways, highways, municipal and intercity rail transit, and in particular relates to a construction method for a 48m segmental beam of a passenger dedicated line based on BIM technology. Background technique [0002] There are currently two main methods for the construction of segmental beams. One is the method of prefabricating as a whole, and then using equipment such as bridge erecting machines to install them in place in sequence. This method is suitable for the case where the span of the pier is relatively small. If the beam is too long, problems such as stress concentration may occur in the prefabrication process, and the segmental beam is too long, which requires high transfer and hoisting equipment, which increases the construction cost. At the same time, it is not easy to adjust during installation, which affects the final installation quality. Security risks. A...
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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 李玉梅孙胜张龙吕燕军赵孟贺
Owner CHINA RAILWAY NO 3 GRP CO LTD
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