Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for repairing frost heaving cracking of newly-built concrete beam body
The invention relates to a repairing method for frost heaving cracking of a newly-built concrete beam body. The repairing method comprises the steps that multiple air holes are formed in the crack trend; dry air is poured into the cracks through the air holes until water spots in the cracks are completely discharged; then a vertical prestressed tendon is tensioned, and after tensioning is completed, a vertical prestressed pipeline is grouted; the cracks are repaired and all air holes are sealed; and a reinforcing structure across the crack is applied to reinforce the beam body. The problem that the beam body cracks due to frost heaving is solved, cracks can be prevented from being developed again in the prestress tensioning process, and the problem that the appearance of a reinforced areais inconsistent with the overall appearance of the beam body is solved. The method is simple and rapid to operate, low in cost, obvious in economic benefit and attractive in reinforcing effect, and the crack resistance and the bearing capacity of the bridge are not affected.
本申请涉及一种新建混凝土梁体冻胀开裂的修复方法，先沿裂缝走向设置若干气孔；再通过气孔向裂缝内灌注干燥空气，直至裂缝中水渍被排干；然后张拉竖向预应力筋，张拉完毕，对竖向预应力管道进行压浆处理；对裂缝进行修复并封闭所有气孔；施加横跨裂缝的加固结构以加固梁体。本申请解决了梁体因冻胀而开裂的问题，可防止裂缝在预应力张拉过程中再次开展，并解决了加固区域外观与梁体整体外观不一致的问题。该方法操作简单、快捷，成本低，经济效益明显，加固效果美观且不影响桥梁的抗裂性和承载能力。
Method for repairing frost heaving cracking of newly-built concrete beam body
The invention relates to a repairing method for frost heaving cracking of a newly-built concrete beam body. The repairing method comprises the steps that multiple air holes are formed in the crack trend; dry air is poured into the cracks through the air holes until water spots in the cracks are completely discharged; then a vertical prestressed tendon is tensioned, and after tensioning is completed, a vertical prestressed pipeline is grouted; the cracks are repaired and all air holes are sealed; and a reinforcing structure across the crack is applied to reinforce the beam body. The problem that the beam body cracks due to frost heaving is solved, cracks can be prevented from being developed again in the prestress tensioning process, and the problem that the appearance of a reinforced areais inconsistent with the overall appearance of the beam body is solved. The method is simple and rapid to operate, low in cost, obvious in economic benefit and attractive in reinforcing effect, and the crack resistance and the bearing capacity of the bridge are not affected.
本申请涉及一种新建混凝土梁体冻胀开裂的修复方法，先沿裂缝走向设置若干气孔；再通过气孔向裂缝内灌注干燥空气，直至裂缝中水渍被排干；然后张拉竖向预应力筋，张拉完毕，对竖向预应力管道进行压浆处理；对裂缝进行修复并封闭所有气孔；施加横跨裂缝的加固结构以加固梁体。本申请解决了梁体因冻胀而开裂的问题，可防止裂缝在预应力张拉过程中再次开展，并解决了加固区域外观与梁体整体外观不一致的问题。该方法操作简单、快捷，成本低，经济效益明显，加固效果美观且不影响桥梁的抗裂性和承载能力。
Method for repairing frost heaving cracking of newly-built concrete beam body
一种新建混凝土梁体冻胀开裂的修复方法
ZENG DELI (Autor:in) / CAI ZHENGDONG (Autor:in) / WEI JIANFENG (Autor:in) / BAI HONGHAI (Autor:in) / PENG XUMIN (Autor:in) / ZHENG ZHOUJUN (Autor:in) / LUO LIJUN (Autor:in) / YE MIN (Autor:in) / WANG WENYANG (Autor:in) / LIU JING (Autor:in)
28.07.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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