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A platform for research: civil engineering, architecture and urbanism
Steel-concrete composite beam structure with heightened steel beam in hogging moment area and construction method
The invention relates to a steel-concrete composite beam structure with heightened steel beams in a hogging moment area and a construction method. The construction method comprises the following steps of machining and manufacturing the steel beams; welding a shearing force connecting piece; erecting a steel beam; constructing a concrete bridge deck; constructing a guardrail or an anti-collision wall; and performing construction bridge deck pavement. Wherein the beam height of the steel beam is increased upwards in the hogging moment section, the concrete bridge deck slab is connected with the steel beam through the shear connector to form a composite beam, and the steel beam in the hogging moment section of the steel-concrete composite beam is embedded into the concrete bridge deck slab; the concrete bridge deck slab in the positive bending moment area is located on the upper portion of the steel beam upper flange, and the concrete bridge deck slab in the negative bending moment area is located on the lower portion of the steel beam upper flange or wraps the steel beam upper flange. The defect of low tensile strength of the concrete bridge deck in the hogging moment area of the continuous composite beam bridge is avoided, the tensile strength of the wing plate on the steel beam in the hogging moment area of the continuous beam is fully utilized from the structural change so as to reduce the tensile stress of the concrete bridge deck, the composite beam is stressed more reasonably, and the hogging moment area disease situation of the structure is improved; and a good application prospect is realized.
本发明涉及一种负弯矩区钢梁加高的钢‑混凝土组合梁结构及施工方法，包括以下步骤：钢梁加工与制造；焊接剪力连接件；钢梁架设；施工混凝土桥面板；施工护栏或防撞墙；施工桥面铺装。其中，钢梁在负弯矩区段向上增加梁高，混凝土桥面板通过剪力连接件与钢梁连接在一起形成组合梁，钢‑混凝土组合梁负弯矩区的钢梁嵌入混凝土桥面板；正弯矩区的混凝土桥面板位于钢梁上翼缘上部，负弯矩区的混凝土桥面板位于钢梁上翼板下部或包裹着钢梁上翼缘。本发明规避了连续组合梁桥负弯矩区混凝土桥面板的抗拉强度低的弱点，从构造上的改变来充分利用连续梁负弯矩区钢梁上翼板抗拉强度，以减小混凝土桥面板拉应力，使组合梁受力更加合理，改善该结构负弯矩区病害情况，具有良好的应用前景。
Steel-concrete composite beam structure with heightened steel beam in hogging moment area and construction method
The invention relates to a steel-concrete composite beam structure with heightened steel beams in a hogging moment area and a construction method. The construction method comprises the following steps of machining and manufacturing the steel beams; welding a shearing force connecting piece; erecting a steel beam; constructing a concrete bridge deck; constructing a guardrail or an anti-collision wall; and performing construction bridge deck pavement. Wherein the beam height of the steel beam is increased upwards in the hogging moment section, the concrete bridge deck slab is connected with the steel beam through the shear connector to form a composite beam, and the steel beam in the hogging moment section of the steel-concrete composite beam is embedded into the concrete bridge deck slab; the concrete bridge deck slab in the positive bending moment area is located on the upper portion of the steel beam upper flange, and the concrete bridge deck slab in the negative bending moment area is located on the lower portion of the steel beam upper flange or wraps the steel beam upper flange. The defect of low tensile strength of the concrete bridge deck in the hogging moment area of the continuous composite beam bridge is avoided, the tensile strength of the wing plate on the steel beam in the hogging moment area of the continuous beam is fully utilized from the structural change so as to reduce the tensile stress of the concrete bridge deck, the composite beam is stressed more reasonably, and the hogging moment area disease situation of the structure is improved; and a good application prospect is realized.
本发明涉及一种负弯矩区钢梁加高的钢‑混凝土组合梁结构及施工方法，包括以下步骤：钢梁加工与制造；焊接剪力连接件；钢梁架设；施工混凝土桥面板；施工护栏或防撞墙；施工桥面铺装。其中，钢梁在负弯矩区段向上增加梁高，混凝土桥面板通过剪力连接件与钢梁连接在一起形成组合梁，钢‑混凝土组合梁负弯矩区的钢梁嵌入混凝土桥面板；正弯矩区的混凝土桥面板位于钢梁上翼缘上部，负弯矩区的混凝土桥面板位于钢梁上翼板下部或包裹着钢梁上翼缘。本发明规避了连续组合梁桥负弯矩区混凝土桥面板的抗拉强度低的弱点，从构造上的改变来充分利用连续梁负弯矩区钢梁上翼板抗拉强度，以减小混凝土桥面板拉应力，使组合梁受力更加合理，改善该结构负弯矩区病害情况，具有良好的应用前景。
Steel-concrete composite beam structure with heightened steel beam in hogging moment area and construction method
负弯矩区钢梁加高的钢-混凝土组合梁结构及施工方法
CHEN YIYAN (author) / HUANG GUANGLING (author) / ZHAO QIU (author)
2021-04-16
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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