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A platform for research: civil engineering, architecture and urbanism
New and old T-shaped bridge deck splicing structure for highway and construction method of new and old T-shaped bridge deck splicing structure
The invention is suitable for the technical field of bridge construction, and provides a splicing structure for new and old T-shaped bridge decks of a highway and a construction method thereof.According to the splicing structure, prestressed steel strands on new and old T-shaped beams are adopted, and transverse partition plates and prestressed steel bars are arranged, so that the occlusion force of bridge concrete is increased, and the force transmission capacity is improved; the applied prestress generates pressure stress on the lower part of the flange plate, so that the flange plate cannot crack under the action of wheel load of an automobile; the prestress is eccentric to the flange plate, upward bending moment can be generated, and downward bending moment generated by automobile load can be counteracted; after the prestressed steel bars near the diaphragm plate are tensioned, pressure stress can be generated on the diaphragm plate, and the occlusal force of diaphragm plate concrete and T-beam concrete is increased, so that the diaphragm plate is tightly attached to the T-beam to transfer force when being stressed, and the actual transverse distribution coefficient of the bridge is close to a theoretical value.
本发明适用于桥梁施工技术领域，提供了一种公路新旧T型桥梁桥面拼接结构及其施工方法，本发明通过采用了在新旧T梁上的预应力钢绞线，和设置横隔板和预应力钢筋，使得桥梁混凝土咬合力增加，增加了传力能力；施加的预应力对翼缘板下部产生压应力，使得其在汽车轮载的作用下不会开裂；而且该预应力对翼缘板来说是偏心的，会生成向上的弯矩，可以抵消汽车荷载产生的向下的弯矩；在横隔板附近的预应力钢筋张拉以后，会对横隔板产生压应力，也使得横隔板混凝土与T梁混凝土咬合力增加，从而使得横隔板受力时与T梁密贴传力，使得桥梁实际横向分布系数与理论值接近。
New and old T-shaped bridge deck splicing structure for highway and construction method of new and old T-shaped bridge deck splicing structure
The invention is suitable for the technical field of bridge construction, and provides a splicing structure for new and old T-shaped bridge decks of a highway and a construction method thereof.According to the splicing structure, prestressed steel strands on new and old T-shaped beams are adopted, and transverse partition plates and prestressed steel bars are arranged, so that the occlusion force of bridge concrete is increased, and the force transmission capacity is improved; the applied prestress generates pressure stress on the lower part of the flange plate, so that the flange plate cannot crack under the action of wheel load of an automobile; the prestress is eccentric to the flange plate, upward bending moment can be generated, and downward bending moment generated by automobile load can be counteracted; after the prestressed steel bars near the diaphragm plate are tensioned, pressure stress can be generated on the diaphragm plate, and the occlusal force of diaphragm plate concrete and T-beam concrete is increased, so that the diaphragm plate is tightly attached to the T-beam to transfer force when being stressed, and the actual transverse distribution coefficient of the bridge is close to a theoretical value.
本发明适用于桥梁施工技术领域，提供了一种公路新旧T型桥梁桥面拼接结构及其施工方法，本发明通过采用了在新旧T梁上的预应力钢绞线，和设置横隔板和预应力钢筋，使得桥梁混凝土咬合力增加，增加了传力能力；施加的预应力对翼缘板下部产生压应力，使得其在汽车轮载的作用下不会开裂；而且该预应力对翼缘板来说是偏心的，会生成向上的弯矩，可以抵消汽车荷载产生的向下的弯矩；在横隔板附近的预应力钢筋张拉以后，会对横隔板产生压应力，也使得横隔板混凝土与T梁混凝土咬合力增加，从而使得横隔板受力时与T梁密贴传力，使得桥梁实际横向分布系数与理论值接近。
New and old T-shaped bridge deck splicing structure for highway and construction method of new and old T-shaped bridge deck splicing structure
一种公路新旧T型桥梁桥面拼接结构及其施工方法
TENG YINGMING (author) / JING SHIHONG (author) / LI LIZHONG (author) / HUANG DAO (author)
2023-11-14
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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