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Splicing method of bridge under condition of construction while vehicle passing

A conditional bridge technology, which is applied in the splicing field of bridges under the condition of opening to traffic and construction, can solve problems such as cracks in splicing joints, and achieve the effect of ensuring pouring quality and improving crack resistance

Inactive Publication Date: 2019-10-15
CCCC SHEC DONGMENG ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, under this splicing method, the quality of the splicing seam will be affected by the vibration of the vehicle, and cracks and other quality hazards will easily occur.

Method used

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  • Splicing method of bridge under condition of construction while vehicle passing
  • Splicing method of bridge under condition of construction while vehicle passing
  • Splicing method of bridge under condition of construction while vehicle passing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The biggest problem in the traditional splicing scheme of new and old bridges is how to ensure that the project of splicing the longitudinal joints of new and old bridges can be effectively implemented without interrupting daily traffic. The usual practice is to pour the splicing concrete to the required strength, and the vehicles must make a detour, and the method of closing the traffic is adopted. Allow the poured concrete to cure for a period of time, so that the strength can reach the required conditions before the traffic can be resumed . But in this case: First, two-way vehicles will occupy a lane in the same area and drive towards each other. Large and small vehicles will line up, so the speed of vehicles will inevitably decrease, and the passing capacity will be greatly reduced. During the peak hours of driving, a large number of vehicles cannot pass in time. , It is easy to cause a large area of ​​traffic jams when the car rental situation is serious; second, t...

Embodiment 2

[0038] On the basis of the solution disclosed in Embodiment 1, this embodiment discloses a clamp structure.

[0039] Such as Figure 4 As shown, each set of clamps includes an upper splint, a lower splint and two screws. The upper splint and the lower splint clamp two T-beams in the middle, and the two screws run through the upper splint, the splicing seam, and the lower splint. Both the upper splint and the lower splint are in contact with the two T-beam surfaces, and multi-point contact is not allowed.

[0040] The splicing method of the bridge under the condition of opening to traffic and construction includes the following steps:

[0041] Step 1. Place the seam template in the seam between the T beam and the T beam, and use the wooden keel to support the seam template;

[0042] Step 2. Fully weld the upper and lower flange steel bars reserved for the two T-beams;

[0043] Step 3: Install several sets of clamps in sequence along the length of the joint, and adjust the cl...

Embodiment 3

[0046] On the basis of the schemes disclosed in Embodiment 1 and Embodiment 2, the steel fiber concrete of this embodiment is poured step by step from one end to the other end in the length direction of the splicing joint and compacted by vibrating with a flat vibrator. In this embodiment, the purpose of vibrating and compacting with a flat vibrator is to ensure that the steel fiber concrete is well connected, and the gradual pouring is to prevent cracks.

[0047] T-beam refers to a beam with a T-shaped cross-section. The protruding part on both sides of the T-beam is the flange, the middle part of the T-beam is the beam rib, and the flange reinforcement is located at the flange. The splicing joints are spliced ​​and constructed under dynamic load conditions to guide the traffic flow to the beam ribs of the T-beam.

[0048]The splicing joint is located between the T-beam and the T-beam. The two T-beams are spliced ​​together to form a widened beam slab; a 40-60cm wide area is ...

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Abstract

The invention provides a splicing method of a bridge under a condition of construction while vehicle passing. The splicing method comprises the following steps that 1, a splicing seam template is placed in a splicing seam between T beams, and wood keels are used for supporting the splicing seam template; 2, wing plate steel bars reserved by the two T beams are fully welded; 3, a plurality of setsof clamps are sequentially installed along the length direction of the splicing seam, the clamps are adjusted to clamp the T beams on the two sides of the splicing seam, and at the time, the wood keels are erected on lower clamping plates of the clamps; and 4, steel fiber concrete is poured from bottom to top above the splicing seam template, when the strength of the steel fiber concrete reaches 85% or above of the design strength, the plurality of sets of clamps, the wooden keels and the splicing seam template are disassembled in sequence.

Description

technical field [0001] The invention relates to the field of bridge splicing, in particular to a bridge splicing method under the condition of opening to traffic and construction. Background technique [0002] With the rapid development of my country's economy, many expressways can no longer meet the requirements of today's traffic operation capacity, and they will face the problem of reconstruction, reconstruction, and upgrading of road grades, and road grade upgrades are basically completed without interrupting traffic. [0003] In today's bridge reconstruction and expansion construction, in order to reduce the cost of traffic conversion and improve construction efficiency, the construction is basically carried out by splicing the inner and outer bridges while the inner bridge is open to traffic. Therefore, in the construction under this splicing method, the quality of the splicing seam will be affected by the vibration of the vehicle, and cracks and other quality hazards ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01D21/00
CPCE01D21/00
Inventor 王鹏飞尹海林于海涛段世林刘光辉
Owner CCCC SHEC DONGMENG ENG CO LTD