Rigid connecting piece steel bridge deck pavement structure and pavement method

Abstract

Rigid connector steel bridge deck pavement structure and pavement method, the pavement structure includes a top plate and a longitudinal web and a transverse diaphragm orthogonally connected to the bottom surface of the top plate, and a bridge deck pavement layer is laid on the top surface of the top plate; the top plate On the top surface, there are connectors located in the pavement layer of the bridge deck; among them, the connectors are convenient for construction, and have relatively high shear resistance, pull-out resistance and peeling resistance. The pavement method described above uses a connecting piece composed of a steel plate, a left trough plate and a right trough plate. The construction is convenient, fast, and easy to operate. The pavement layer laid by the steel fiber concrete layer and the asphalt concrete layer forms a whole, which is resistant to tension The capacity increases and the thickness increases; it can effectively reduce the tensile stress and strain resistance on the surface of the pavement, so it can effectively solve the problem of cracking on the surface of the pavement.

Description

technical field [0001] The invention relates to the technical field of bridge construction engineering, in particular to a rigid connector steel bridge deck pavement structure and a pavement method. Background technique [0002] At present, in long-span bridges, orthotropic steel decks are gradually being widely used due to their light component weight, convenient transportation and erection, and short construction period. Anisotropic steel bridge deck, that is, longitudinal webs are welded on the inner side of the steel deck roof, and these longitudinal ribs are orthogonal to the transverse diaphragm, thus forming an orthogonal structural heterogeneous slab together with the steel bridge deck. [0003] The bridge deck pavement layer is generally laid on the orthotropic steel bridge deck with thin-layer reinforced concrete and asphalt concrete. To fix the reinforced concrete bridge deck, welding studs, perforated steel plates and other connectors are usually arranged. In th...

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Problems solved by technology

However, the rigidity of the welding stud itself is relatively large, resulting in a large shear force on the welding stud. How to reduce the shear force value of the welding stud at a local position has become one of the difficulties in design

[0005] Slotted steel plate connectors have problems such as difficulty in penetrating steel bars and complicated construction

At the same time, the above-mentioned existing steel bridge deck needs to arrange ordinary steel bars, the manufacturing process is relatively complicated, and there is a problem of local stress concentration; at the same time, the existing construction method also causes many pavement diseases and problems, mainly including: 1. The load of automobiles, etc. Excessive weight will cause excessive tensile strain on the pavement surface, which will easily lead to longitudinal and transverse cracking or peeling of the pavement layer; 2. The durability of the pavement layer is insufficient. Under repeated loads such as automobiles, the mixture of the pavement layer is easy to creep 3. Due to the limited number of welding studs, the shear bearing capacity of the connecting piece is small and cannot bear the relative displacement between the steel and concrete, and fatigue damage is prone to occur at the root, and the welding studs The nearby concrete is easy to be crushed and damaged in the early stage of stress; 4. The steel plate connector with holes has a large bearing capacity, but it needs to wear steel bars in the hole, which is inconvenient for construction; 5. The pavement layer has poor pull-out and peel-off resistance. Under the action of wheel pressure, it is prone to early local damage

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