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A platform for research: civil engineering, architecture and urbanism
Method for improving connecting safety of grouting sleeve and grouting sleeve
The invention provides a method for improving the connecting safety of a grouting sleeve and the grouting sleeve, and belongs to the technical field of architectural engineering. The method for improving the connecting safety of the grouting sleeve is characterized in that the grouting sleeve is adopted for being connected with reinforcement of a precast concrete structure, a tensile strength safety residual value x is added on the basis that the bond stress of a grouting area of the grouting sleeve on the reinforcement is larger than the tensile strength of the reinforcement, wherein x is larger than or equal to 0.1 and smaller than or equal to 1; and the length L of the grouting area is larger than or equal to eight times of the reinforcement diameter*(1+x). The tensile strength safety residual value x is added on the basis that the bond stress of the grouting area of the grouting sleeve on the reinforcement is larger than the tensile strength of the reinforcement, it can be guaranteed that the bond stress of the grouting area is larger than the design tensile strength value of the reinforcement, and thus even though construction is carried out when slurry in the sleeve does notreach the strength requirement, a grouting solidification body cannot tear or crack.
本发明提供一种提高灌浆套筒连接安全性的方法和灌浆套筒，属于建筑工程技术领域，提高灌浆套筒连接安全性的方法在于，采用灌浆套筒连接预制混凝土结构的钢筋，在灌浆套筒的灌浆区对钢筋的握裹力大于钢筋抗拉强度的基础上，再加一个抗拉强度安全余值x，其中，0.1≤x≤1；所述灌浆区的长度L≥8倍钢筋直径×(1+x)。本发明在灌浆套筒的灌浆区对钢筋的握裹力大于钢筋抗拉强度的基础上，再加一个抗拉强度安全余值x，可以保证灌浆区握裹力大于钢筋的设计抗拉强度值，这样即使套筒内浆液未达到强度要求时就进行施工，也不会使灌浆凝固体产生裂缝或缝隙。
Method for improving connecting safety of grouting sleeve and grouting sleeve
The invention provides a method for improving the connecting safety of a grouting sleeve and the grouting sleeve, and belongs to the technical field of architectural engineering. The method for improving the connecting safety of the grouting sleeve is characterized in that the grouting sleeve is adopted for being connected with reinforcement of a precast concrete structure, a tensile strength safety residual value x is added on the basis that the bond stress of a grouting area of the grouting sleeve on the reinforcement is larger than the tensile strength of the reinforcement, wherein x is larger than or equal to 0.1 and smaller than or equal to 1; and the length L of the grouting area is larger than or equal to eight times of the reinforcement diameter*(1+x). The tensile strength safety residual value x is added on the basis that the bond stress of the grouting area of the grouting sleeve on the reinforcement is larger than the tensile strength of the reinforcement, it can be guaranteed that the bond stress of the grouting area is larger than the design tensile strength value of the reinforcement, and thus even though construction is carried out when slurry in the sleeve does notreach the strength requirement, a grouting solidification body cannot tear or crack.
本发明提供一种提高灌浆套筒连接安全性的方法和灌浆套筒，属于建筑工程技术领域，提高灌浆套筒连接安全性的方法在于，采用灌浆套筒连接预制混凝土结构的钢筋，在灌浆套筒的灌浆区对钢筋的握裹力大于钢筋抗拉强度的基础上，再加一个抗拉强度安全余值x，其中，0.1≤x≤1；所述灌浆区的长度L≥8倍钢筋直径×(1+x)。本发明在灌浆套筒的灌浆区对钢筋的握裹力大于钢筋抗拉强度的基础上，再加一个抗拉强度安全余值x，可以保证灌浆区握裹力大于钢筋的设计抗拉强度值，这样即使套筒内浆液未达到强度要求时就进行施工，也不会使灌浆凝固体产生裂缝或缝隙。
Method for improving connecting safety of grouting sleeve and grouting sleeve
提高灌浆套筒连接安全性的方法和灌浆套筒
CHEN JIANQUAN (author)
2020-09-04
Patent
Electronic Resource
Chinese
IPC:
E04C
STRUCTURAL ELEMENTS
,
Bauelemente
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