Tooling suitable for high pier and large span continuous rigid frame extra heavy 0 # bracket preloading

A large-span, rigid-frame technology, applied in the erection/assembly of bridges, bridges, buildings, etc., can solve problems such as time-consuming, labor-intensive, affecting construction progress, cumbersome procedures, etc., to reduce construction investment, save construction time, and ensure construction quality Effect

Pending Publication Date: 2019-01-18
CHINA TIESIJU CIVIL ENG GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preloading preloading needs to carry a large amount of preloading materials to the bracket, especially when the pier is in the water, the preloading materials need to be transported repeatedly by ships, the process is cumbersome, time-consuming and laborious, which seriously affects the construction progress

Method used

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  • Tooling suitable for high pier and large span continuous rigid frame extra heavy 0 # bracket preloading

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Embodiment Construction

[0011] Below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described, and the definition of each label among the figure is: beam body 1, drop spacer 2, jack 3, reinforcing vertical bar 4, reaction force pole beam 5, Bailey beam 6, Reaction force top beam 7, distribution beam 8, bracket 9, pad beam 10, pre-embedded rebar 11, and reserved holes 12 in the pier body.

[0012] The present invention includes a Bailey beam 6 and a jack 3 . The Bailey beam 6 is fixed on the top of the beam body 1 through a plurality of reinforcing vertical rods 4 . A plurality of brackets 9 are fixed to the side wall of the beam body 1 through the reserved holes 12 of the pier body and the pre-embedded screw steel 11 . A jack 3 is provided between each bracket 9 and the Bailey beam 6 . The top of the Bailey beam 6 is provided with a counter force pole beam 5, and the reinforcing vertical rod 4 passes through the counter force pole beam 5 and th...

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Abstract

The invention discloses a tooling suitable for high pier and large span continuous rigid frame extra heavy 0 # bracket preloading. By using the strong bending resistance of single or double-spelled Bailey beams, Bailey beam are anchored on that pier top by a beam body pre-embedded fine tie screw bar, I-steel is used as temporary support pad at the bottom, a jack is installed at the top of the bracket (the low part of the Bailey beam), and a downward force is generated on the bracket by the jack jacking to achieve the purpose of pre-compression, the inelastic deformation of the bracket is eliminated equivalently, and the purpose of elastic deformation of the bracket is obtained. The invention can greatly improve the construction efficiency of loading and unloading in the preloading processof the bracket, save the construction time and reduce the construction investment. At the same time, it can also ensure the construction quality of bracket preloading and reduce the risk of hoisting in high-altitude operation.

Description

technical field [0001] The present invention relates to the preloading construction of extra-heavy 0# blocks in continuous rigid structures such as high pier and large-span cantilever pouring construction, and specifically relates to a bracket preloading method suitable for high-pier large-span continuous rigid structures and extra-heavy 0# blocks. tooling. Background technique [0002] Block 0# of the continuous girder pier is the foundation for the later cantilever construction of the upper part of the bridge. It itself is made of large-volume concrete cast-in-situ, and the upper part is installed with brackets for bearing the concrete load during the later cantilever construction. The pressure bearing capacity of the bracket is very important, so after the bracket is installed, the bracket must be preloaded to eliminate the inelastic deformation of the bracket itself, and at the same time measure the elastic deformation under the same load, through the pre-construction A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 杨川陈文尹赵兵黄传圣张树发黄飞占文进耿柳杨
Owner CHINA TIESIJU CIVIL ENG GRP CO LTD
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