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Novel steel-UHPC combined waffle plate

A new type of waffle plate technology, applied to bridge parts, bridge materials, bridges, etc., can solve the problems of weak shear bearing capacity of cylindrical head welding studs, high construction difficulty, etc., to reduce fatigue risk, reduce construction difficulty, size The effect of flexible specifications

Pending Publication Date: 2021-11-02
CHANGSHA UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the two types of shear connectors that are most commonly used at present, the shear bearing capacity of cylindrical head welding studs is weak, while the shear bearing capacity of perforated plate (PBL) connectors is relatively large, but it needs to be installed in a closed round hole. Wearing ribs, there is a greater difficulty in construction

Method used

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  • Novel steel-UHPC combined waffle plate
  • Novel steel-UHPC combined waffle plate
  • Novel steel-UHPC combined waffle plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as Figure 1-2 As shown, the steel member 3 is arranged at the lower bottom of the UHPC main rib 4, and the lower flange 301 in the steel member 3 extends to the lower outer end of the UHPC main rib 4, so that the UHPC main rib 4 is combined with the steel member 3 The combined structure is the main load-bearing structure.

Embodiment 2

[0030] Such as image 3 As shown, in the process of installing the steel member, the web 302 on the steel member 3 is completely attached to the lower edge of the UHPC main rib 4, which is the lowest limit of the height of the steel member 3. The comparison between Embodiment 1 and Embodiment 2 shows that the installation height of the steel member 3 can be adjusted according to the actual situation.

[0031] Working principle: The selected steel member 3 uses H-shaped steel (or I-shaped steel) and cuts along the shape of the tenon 303. One I-shaped steel can be cut into two steel members 3; steel plates can also be used to manufacture the lower wing plate separately 301 and the web 302 with mortise 303 are welded together.

Embodiment 3

[0033] Such as Figure 5 As shown, several steel bars 2 are arranged inside the UHPC panel 1 and the UHPC secondary rib 5, and the steel bars 2 are respectively provided with a first steel bar 201, a second steel bar 202 and a third steel bar 203 according to the laying method, wherein the first steel bar 201 and the third steel bar 203 The steel member 3 is in an orthogonal direction, wherein the second steel bar 202 is located inside the UHPC secondary rib 5, wherein the third steel bar 203 is distributed parallel to the steel member 3, and the second steel bar 202 in the UHPC secondary rib 5 passes through the gap between the tenons 303 Maokou.

[0034] When the UHPC panel 1 needs to be made in blocks, the ends of the first steel bar 201, the second steel bar 202 and the third steel bar 203 all extend to the outside of the UHPC secondary rib 5 or the UHPC panel 1;

[0035] When the UHPC panel 1 does not need to be produced in blocks or at the beginning and end of the block...

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Abstract

The invention discloses a novel steel-UHPC combined waffle plate which comprises a UHPC panel, the upper surface of the UHPC panel is horizontally distributed, UHPC main ribs and UHPC secondary ribs are uniformly arranged on the lower surface of the UHPC panel, the UHPC main ribs and the UHPC secondary ribs are orthogonally distributed, the arrangement heights of the UHPC main ribs and the UHPC secondary ribs are consistent, and steel members are arranged in the UHPC main ribs. The combined waffle plate obtained by adopting a mode of combining the steel member and the UHPC waffle plate adapts to requirements of different supporting conditions and different spans, and compared with means of increasing the thickness of the waffle plate, applying prestress and the like to adapt to a larger bridge deck span, the combined bridge deck plate is relatively simple in structure, saves the UHPC material consumption, is light in dead weight, has better economical efficiency, and is convenient for construction.

Description

technical field [0001] The invention relates to the technical fields of civil engineering such as bridges and buildings, in particular to a novel steel-UHPC combined waffle board. Background technique [0002] In current engineering practice, the application of ultra-high performance concrete (UHPC for short) waffle panels (pure UHPC, non-steel-UHPC combination) is still limited. Taking the field of bridge engineering as an example, the bridge deck is supported on the main girder (longitudinal girder) and beam, and the force requirements in the longitudinal and transverse directions are often quite different. One of the directions may be used as the main force direction, while the other One direction is used as the secondary force direction, even in a one-way slab force state, which requires that the structure of the Waffle bridge deck can be distinguished in the primary and secondary directions. In addition, when the span of the bridge deck is large, it is necessary to inc...

Claims

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Application Information

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IPC IPC(8): E01D19/12E01D101/26
CPCE01D19/125E01D2101/268
Inventor 彭旺虎邓鸣谢泽华赵志军
Owner CHANGSHA UNIVERSITY