Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Recycling method for old bridge precast beam
The invention relates to the technical field of resource recycling, in particular to an old bridge precast beam recycling method, which is characterized in that an old precast beam is treated when an old bridge is dismantled, so that a pier top cast-in-place area is formed after the old beam is installed at a new bridge site, and an anchor block is arranged in the pier top cast-in-place area to provide a pier top prestress tension counter-force point; the original hogging moment prestressed steel strands of the old beam are lengthened and then penetrate through the anchor blocks, so that the tensioning positions of the prestressed tendons are changed, and the defects that mortar is poured into the anchoring positions of the original prestressed tendons of the old beam, the space of the pier top is small, and tensioning cannot be conducted at the original anchoring points are overcome; according to the method, the old beam obtained by dismantling the old bridge can be recovered into a continuous system at the new bridge site to be integrally reused, good stress performance is ensured, the reusable old beam obtained when the old bridge is dismantled is applied to construction of the new bridge site, reuse of the precast beam of the old bridge is achieved, construction waste is reduced, and resource waste is avoided.
本发明涉及资源回收利用技术领域，特别涉及一种旧桥预制梁再利用方法，通过在拆除旧桥时对预制梁旧梁进行处理，使旧梁在新桥位安装后形成墩顶现浇区，通过在墩顶现浇区设置锚块提供墩顶预应力张拉反力点，将旧梁原负弯矩预应力钢绞线接长后穿过锚块，改变了预应力筋张拉位置，克服了旧梁原有预应力筋锚固处已经灌注砂浆，且墩顶空间小，无法在原锚固点进行张拉的缺陷，使旧桥拆除获取的旧梁能够在新桥位恢复成连续体系进行整体重复利用，且确保获得较好的受力性能，使拆除旧桥时获取的可再利用的旧梁应用于新桥位建设中，实现旧桥预制梁的重复利用，减少了建筑垃圾产生，避免了资源浪费。
Recycling method for old bridge precast beam
The invention relates to the technical field of resource recycling, in particular to an old bridge precast beam recycling method, which is characterized in that an old precast beam is treated when an old bridge is dismantled, so that a pier top cast-in-place area is formed after the old beam is installed at a new bridge site, and an anchor block is arranged in the pier top cast-in-place area to provide a pier top prestress tension counter-force point; the original hogging moment prestressed steel strands of the old beam are lengthened and then penetrate through the anchor blocks, so that the tensioning positions of the prestressed tendons are changed, and the defects that mortar is poured into the anchoring positions of the original prestressed tendons of the old beam, the space of the pier top is small, and tensioning cannot be conducted at the original anchoring points are overcome; according to the method, the old beam obtained by dismantling the old bridge can be recovered into a continuous system at the new bridge site to be integrally reused, good stress performance is ensured, the reusable old beam obtained when the old bridge is dismantled is applied to construction of the new bridge site, reuse of the precast beam of the old bridge is achieved, construction waste is reduced, and resource waste is avoided.
本发明涉及资源回收利用技术领域，特别涉及一种旧桥预制梁再利用方法，通过在拆除旧桥时对预制梁旧梁进行处理，使旧梁在新桥位安装后形成墩顶现浇区，通过在墩顶现浇区设置锚块提供墩顶预应力张拉反力点，将旧梁原负弯矩预应力钢绞线接长后穿过锚块，改变了预应力筋张拉位置，克服了旧梁原有预应力筋锚固处已经灌注砂浆，且墩顶空间小，无法在原锚固点进行张拉的缺陷，使旧桥拆除获取的旧梁能够在新桥位恢复成连续体系进行整体重复利用，且确保获得较好的受力性能，使拆除旧桥时获取的可再利用的旧梁应用于新桥位建设中，实现旧桥预制梁的重复利用，减少了建筑垃圾产生，避免了资源浪费。
Recycling method for old bridge precast beam
一种旧桥预制梁再利用方法
ZHAO YAN (Autor:in) / LIAO CHENFENG (Autor:in) / CHEN XIN (Autor:in) / WEI FUTANG (Autor:in) / ZHANG XIAOYU (Autor:in) / HUANG KEBANG (Autor:in) / LIU MENGLIN (Autor:in) / MAO LIMIN (Autor:in) / HUANG TAO (Autor:in)
18.10.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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