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Segmental prefabricated bridge mounting linear shape control method

A technology of linear control and segmental beams, which is applied in the direction of bridges, bridge construction, erection/assembly of bridges, etc., can solve problems affecting construction efficiency, joint construction quality and durability, etc., to improve work efficiency and reduce the number of uses Effect

Active Publication Date: 2018-10-09
上海贝英吉工程咨询有限公司
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  • Application Information

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Problems solved by technology

However, this method involves the number of gaskets used, which not only affects the construction quality and durability of the joints, but also affects the construction efficiency

Method used

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  • Segmental prefabricated bridge mounting linear shape control method
  • Segmental prefabricated bridge mounting linear shape control method
  • Segmental prefabricated bridge mounting linear shape control method

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Experimental program
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Embodiment

[0030] refer to figure 1 , figure 2 , image 3 , a method for controlling the alignment of segmental prefabricated bridges, comprising the following steps: after the segmental girders are prefabricated, installing measuring points, measuring the coordinates of the measuring points in the factory coordinate system, and calculating the node The measuring point coordinates of the section beam in the installation coordinate system;

[0031] After the first section beam 3 is installed, the coordinates of the measured measuring points are verified with the calculated coordinates to ensure that the error is ≤±2mm, and the first section beam 3 and the pier top block 1 are temporarily fixed;

[0032] Continue to install the second segmental beam 4, which is bonded and fixed between the second segmental beam 4 and the first segmental beam 3; then install the third segmental beam 5, the third segmental beam 5 and the first segmental beam 3 The two segmental beams 4 are bonded and fix...

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Abstract

The invention relates to a segmental prefabricated bridge mounting linear shape control method. The segmental prefabricated bridge mounting linear shape control method comprises, after a segmental beam is fabricated, mounting a measurement point, measuring the coordinates of the measuring point in a plant coordinate system, and through coordinate transformation, calculating the coordinates of themeasurement point of the segmental beam in a mounting coordinate system; after a first segmental beam is mounted, calibrating the measured coordinates of the measurement point and calculated coordinates to ensure the error is less than or equal to 2 mm, and temporarily fixing the first segmental beam and a pier top block; according to a current linear shape, after mounting of a third segmental beam is completed, performing coordinate inspection, measuring the mounting coordinates of the third segmental beam, comparing the measured mounting coordinates with the coordinates of the measurement point of the third segmental beam, if the error of the third segmental beam is greater than 2 mm, releasing temporary fixation of the first segmental beam to achieve overall rotation of the third segmental beam, and when the error of the third segmental beam is less than or equal to 2 mm, refixing the first segmental beam. The segmental prefabricated bridge mounting geometry control method can effectively reduce the frequency of usage of gaskets, control the construction quality of joints and improve the durability of the joints.

Description

technical field [0001] The invention relates to a bridge construction method, in particular to a line shape control method for segmental prefabricated bridge installation. Background technique [0002] Since the measurement error in the positioning of the reference block cannot be completely eliminated, if there is still a large spatial position deviation after the positioning adjustment, the linear deviation of the subsequent beam section installation will continue to amplify. The method adopted in the traditional beam section alignment control is to add spacers at the joints to adjust the offset after the erection of a beam is completed, and then assemble the next beam after meeting the needs. However, this method involves the number of gaskets used, which not only affects the construction quality and durability of the joints, but also affects the construction efficiency. Contents of the invention [0003] The object of the present invention is to provide a method for c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 石雪飞宋军刘志权李小祥朱荣余曾巴文鹏凌坡
Owner 上海贝英吉工程咨询有限公司
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