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A platform for research: civil engineering, architecture and urbanism
Prefabricated bridge pier sleeve compounded by UHPC and SMA materials and construction method of prefabricated bridge pier sleeve
The invention relates to a prefabricated pier sleeve compounded by UHPC and SMA materials and a construction method of the prefabricated pier sleeve. The prefabricated pier sleeve comprises a UHPC sleeve, SMA wires, an ECC grouting material, a reserved hole, a grouting opening and a grout outlet. The prefabricated sleeve is located at the joint of a pier and a bearing platform, the inner diameter of the prefabricated sleeve is matched with the outer diameter of the pier, the prefabricated sleeve is formed by splicing two UHPC plates with semicircular sections, holes are evenly formed in the two sides of each UHPC plate in the height direction and used for allowing SMA wires to penetrate through, the two UHPC plates are connected through the SMA wires, and the two UHPC plates are connected through the holes. And the anti-collision capability and the impact resistance of the prefabricated sleeve are enhanced by utilizing the recovery stress generated by SMA along with the temperature rise. A grouting hole is formed in the lower end of the prefabricated sleeve, a grout outlet is formed in the upper end of the prefabricated sleeve, and ECC is poured into a gap between the prefabricated sleeve and the pier from the grouting hole; and the connection between the pier and the prefabricated sleeve is tighter and more reliable. The sleeve can effectively restrain the ECC grouting material, the bonding and anchoring effect at the joint face is enhanced, and the force transmission capacity of the sleeve is ensured.
本发明专利涉及一种利用UHPC和SMA材料复合的桥墩预制套筒及其施工方法，包括UHPC套筒、SMA丝、ECC灌浆料、预留孔洞、灌浆口、出浆口；所述预制套筒位于桥墩和承台的连接处，所述预制套筒的内径适配所述桥墩的外径，所述预制套筒由两片截面为半圆的UHPC板拼合而成，所述UHPC板两侧沿高度方向均匀设有孔洞，用于SMA丝穿过，所述SMA丝将两片UHPC板连接起来，利用SMA随温度升高产生的回复应力增强预制套筒的防撞能力和抗冲击能力。所述预制套筒下端设置灌浆孔，上端设置出浆口，所述预制套筒与桥墩间的空隙用ECC从灌浆口灌入；使桥墩与预制套筒间的连接更加紧密可靠。套筒可有效约束ECC灌浆料，增强结合面处的黏结锚固作用，确保套筒的传力能力。
Prefabricated bridge pier sleeve compounded by UHPC and SMA materials and construction method of prefabricated bridge pier sleeve
The invention relates to a prefabricated pier sleeve compounded by UHPC and SMA materials and a construction method of the prefabricated pier sleeve. The prefabricated pier sleeve comprises a UHPC sleeve, SMA wires, an ECC grouting material, a reserved hole, a grouting opening and a grout outlet. The prefabricated sleeve is located at the joint of a pier and a bearing platform, the inner diameter of the prefabricated sleeve is matched with the outer diameter of the pier, the prefabricated sleeve is formed by splicing two UHPC plates with semicircular sections, holes are evenly formed in the two sides of each UHPC plate in the height direction and used for allowing SMA wires to penetrate through, the two UHPC plates are connected through the SMA wires, and the two UHPC plates are connected through the holes. And the anti-collision capability and the impact resistance of the prefabricated sleeve are enhanced by utilizing the recovery stress generated by SMA along with the temperature rise. A grouting hole is formed in the lower end of the prefabricated sleeve, a grout outlet is formed in the upper end of the prefabricated sleeve, and ECC is poured into a gap between the prefabricated sleeve and the pier from the grouting hole; and the connection between the pier and the prefabricated sleeve is tighter and more reliable. The sleeve can effectively restrain the ECC grouting material, the bonding and anchoring effect at the joint face is enhanced, and the force transmission capacity of the sleeve is ensured.
本发明专利涉及一种利用UHPC和SMA材料复合的桥墩预制套筒及其施工方法，包括UHPC套筒、SMA丝、ECC灌浆料、预留孔洞、灌浆口、出浆口；所述预制套筒位于桥墩和承台的连接处，所述预制套筒的内径适配所述桥墩的外径，所述预制套筒由两片截面为半圆的UHPC板拼合而成，所述UHPC板两侧沿高度方向均匀设有孔洞，用于SMA丝穿过，所述SMA丝将两片UHPC板连接起来，利用SMA随温度升高产生的回复应力增强预制套筒的防撞能力和抗冲击能力。所述预制套筒下端设置灌浆孔，上端设置出浆口，所述预制套筒与桥墩间的空隙用ECC从灌浆口灌入；使桥墩与预制套筒间的连接更加紧密可靠。套筒可有效约束ECC灌浆料，增强结合面处的黏结锚固作用，确保套筒的传力能力。
Prefabricated bridge pier sleeve compounded by UHPC and SMA materials and construction method of prefabricated bridge pier sleeve
一种利用UHPC和SMA材料复合的桥墩预制套筒及其施工方法
WANG WENWEI (author) / HU JINGLIN (author) / LIANG LIANG (author) / ZHAO QIANG (author) / ZHANG DIANCHENG (author) / BIAN BAOWEI (author)
2024-05-10
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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