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Concrete continuous rigid frame bridge assembly type partial load prevention pushing device and construction method thereof

A technology of jacking devices and rigid frame bridges, which is applied in erecting/assembling bridges, bridges, bridge construction, etc. It can solve problems such as difficult synchronization, uneven structural stress, complicated installation and disassembly, and avoid instability. , easy control, enhanced stability effect

Pending Publication Date: 2019-04-12
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This kind of push is difficult to achieve synchronization, and it is easy to cause uneven force on the structure; and generally welded connection is used, and the installation and disassembly construction is complicated

Method used

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  • Concrete continuous rigid frame bridge assembly type partial load prevention pushing device and construction method thereof
  • Concrete continuous rigid frame bridge assembly type partial load prevention pushing device and construction method thereof
  • Concrete continuous rigid frame bridge assembly type partial load prevention pushing device and construction method thereof

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the accompanying drawings and implementation cases.

[0029] like figure 2 As shown, a concrete continuous rigid-frame bridge assembled anti-eccentric load jacking device includes an embedded part, a force transmission rod and a power system.

[0030] The power system includes a jack 10, an oil pump and two L-shaped pressure-bearing plates 9, the two pressure-bearing plates 9 are arranged oppositely, the jack 10 is installed between the two L-shaped pressure-bearing plates 9, and a jacking force is applied by the oil pump; The L-shaped bearing plates 9 are respectively connected with the embedded parts on the beam bodies on both sides of the middle span of the continuous rigid frame bridge through two sets of force transmission rods.

[0031] like figure 2 , Figure 4 , Figure 5 As shown, the embedded parts include two web embedded parts 4 and one roof embedded part 5. The two web embedded ...

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Abstract

The invention discloses a concrete continuous rigid frame bridge assembly type partial load prevention pushing device which comprises an embedded part, dowel bar pieces and a power system, wherein theembedded part comprises a web embedded part and a roof embedded part; the power system comprises a jack, an oil pump and two bearing plates; the web embedded part and the roof embedded part are buried on a beam crossing two sides in the continuous rigid frame bridge; the two bearing plates are arranged opposite to each other and respectively connected with the embedded part on the beam crossing two sides in the continuous rigid frame bridge by virtue of two sets of the dowel bar pieces; the jack is arranged between the two bearing plates; the oil pump is started, the jack is capable of synchronously applying jacking force to the L-shaped bearing plates on two sides, and the jacking force is uniformly applied to two sides of a closure orifice by virtue of the dowel bar pieces. The pushingdevice disclosed by the invention can be repeatedly used, the synchronism of the jacking force applied onto the beam crossing two sides is ensured, and the problems that the closure push is asynchronous and the structural force is non-uniform are solved.

Description

technical field [0001] The invention relates to the field of bridge construction, in particular to an assembled anti-eccentric load pushing device for a concrete continuous rigid frame bridge and a construction method thereof. Background technique [0002] The prestressed concrete continuous rigid-frame bridge has clear force, smooth driving, and has a large spanning capacity, so it is widely used. The prestressed concrete continuous rigid frame bridge is a pier-beam consolidation system, which is a statically indeterminate structure. Factors such as prestress loss, concrete shrinkage and creep, temperature changes and other factors will generate unfavorable additional internal forces in the beam, causing the main pier to deviate and the mid-span to flex. This unfavorable phenomenon affects the driving comfort, structural safety and service life of the bridge. [0003] Before the mid-span is closed, a horizontal thrust is applied to the main beam to pre-deflect the main pi...

Claims

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Application Information

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IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 汪建群袁青魏桂亮袁帅华肖寒
Owner HUNAN UNIV OF SCI & TECH
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