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Novel short segment steel box-concrete combined beam

A technology of reinforced concrete and composite beams, applied in bridges, buildings, etc., can solve the problems of prolonging the line outage time, and achieve the effects of fast construction progress, cost reduction and short construction period.

Active Publication Date: 2013-07-24
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Replacement of damaged track beams with prefabricated prestressed concrete track beams will greatly prolong the outage of the line

Method used

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  • Novel short segment steel box-concrete combined beam
  • Novel short segment steel box-concrete combined beam
  • Novel short segment steel box-concrete combined beam

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A realization method of a short-segment steel box-concrete composite beam using the pretensioning method:

[0042] Step 1 Select the short-segment steel box (1) and the splice plate (2) according to the length, height, curve radius, plane turning angle, and wheel-rail contact surface alignment of the track beam to be replaced, such as Figure 1~Figure 5 shown.

[0043] Short segment steel boxes (1) have different lengths, heights and curve radii; splice plates (2) have different curve radii.

[0044] The value range of the length of the short segment steel box (1) is 0.5m~60m, the value range of the height is 0.5m~2.0m, the value range of the segment curve radius is 50m~∞m, the value range of the segment number The value range is 1~60; the value range of the curve radius of the splicing plate (2) is 50m~∞m, and the value range of the gap length of the gap part is 0m~0.20m; the thickness of the cast-in-place concrete (3) is selected The value range is 0.01m~0.85m; the ...

Embodiment 2

[0050] A realization method of short-segment steel box-concrete composite beam using post-tensioning method:

[0051] Step 1 Select the short-segment steel box (1) and the splice plate (2) according to the length, height, curve radius, plane turning angle, and wheel-rail contact surface alignment of the track beam to be replaced, such as Figure 1~Figure 5 shown.

[0052] Short segment steel boxes (1) have different lengths, heights and curve radii; splice plates (2) have different curve radii.

[0053] The value range of the length of the short segment steel box (1) is 0.5m~60m, the value range of the height is 0.5m~2.0m, the value range of the segment curve radius is 50m~∞m, the value range of the segment number The value range is 1~60; the value range of the curve radius of the splicing plate (2) is 50m~∞m, and the value range of the gap length of the gap part is 0m~0.20m; the thickness of the cast-in-place concrete (3) is selected The value range is 0.01m~0.85m; the valu...

Embodiment 3

[0059] A realization method of short-segment steel box-concrete composite beam without prestressing:

[0060] Step 1 Select the short-segment steel box (1) and the splice plate (2) according to the length, height, curve radius, plane turning angle, and wheel-rail contact surface alignment of the track beam to be replaced, such as Figure 1~Figure 5 shown.

[0061] Short segment steel boxes (1) have different lengths, heights and curve radii; splice plates (2) have different curve radii.

[0062] The value range of the length of the short segment steel box (1) is 0.5m~60m, the value range of the height is 0.5m~2.0m, the value range of the segment curve radius is 50m~∞m, the value range of the segment number The value range is 1~60; the value range of the curve radius of the splicing plate (2) is 50m~∞m, and the value range of the gap length of the gap part is 0m~0.20m; the thickness of the cast-in-place concrete (3) is selected The value range is 0.01m~0.85m; the value range ...

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Abstract

The invention relates to a novel short segment steel box-concrete combined beam, which belongs to the technical field of bridge engineering. The novel short segment steel box-concrete combined beam comprises a steel box beam, anti-shearing connecting elements (4) and three-side outer covering reinforced concrete structures, wherein the steel box beam is formed by short segment steel boxes (1) through split joint via split joint plates (2), the anti-shearing connecting elements (4) are arranged on the two side surfaces and the top surface of the steel box beam, the three-side outer covering reinforced concrete structures consist of concrete (3), vertical steel bars and transverse steel bars and are arranged on the two side surfaces and the top surface of the steel box beam. The novel short segment steel box-concrete combined beam has the beneficial effects that the steel box-concrete combined beam is adopted, the tensile performance of the steel boxes and the pressing resistance performance of the concrete are sufficiently utilized, the steel materials are saved, the cost is reduced, and the obvious economic performance is realized. The steel box beam adopts the segment split joint, the short segment steel boxes and the split joint plates can realize the mass production, the construction progress is fast, and the construction period is short. The combined beam adopts the three-side outer covering reinforced concrete, and adapts to the characteristic of variation of the straddle type monorail traffic rail beam line change, i.e. the three-side stress and line type variation requirement is met.

Description

technical field [0001] The invention belongs to the technical field of bridge engineering, and relates to a novel short-segment steel box-concrete composite beam, which is applied to the emergency repair of track beams during the operation of a straddle type monorail traffic system, specifically a kind of The structure used for temporary replacement when the track beam is damaged. Background technique [0002] The track beam in the straddle monorail system is not only a load-bearing structure, but also a guiding structure to guide the train to run. The track beam has three wheel-rail contact surfaces: the running surface, the guiding surface and the stabilizing surface. The load-bearing wheels of the vehicle walk on the running surface of the track beam, the vehicle guide wheels walk on the guiding surface of the track beam, and the vehicle stabilizing wheels walk on the stable surface of the track beam. Therefore, the track beam must not only bear the load on three surfac...

Claims

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Application Information

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IPC IPC(8): E01D2/04
Inventor 朱尔玉施明源钟明琳郭峰赵祎
Owner BEIJING JIAOTONG UNIV
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