Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Self-locking ECC coating reinforced concrete column reinforcing method
The invention provides a self-locking ECC coating reinforced concrete column reinforcing method. The self-locking ECC coating reinforced concrete column reinforcing method comprises the steps that first angle steel and second angle steel are fixed to the four corners of a reinforced concrete column; uniformly surrounding the reinforced concrete column with a plurality of steel strands at certain intervals from top to bottom and fixing the steel strands on the second angle steel to form a steel strand net; prestress is applied to each steel strand; ECC is sprayed or smeared on the surface of the reinforced concrete column 1, the ECC covers the first angle steel, the second angle steel and the multiple steel strands, gaps are filled, reinforcement is completed, and the weight ratio of all components in the ECC to cement is 0.5-3, 0.5 to 1.5 parts of fine sand, 0 to 0.1 part of silica fume, 0.5 to 2 parts of water, 0.02 to 0.1 part of PVA fiber, 0.005 to 0.02 part of a water reducing agent, and 0.01 to 0.1 part of accelerating agent. By means of the method, the bearing capacity of the reinforced concrete column can be improved, a large restraining effect on the reinforced concrete column is achieved, invasion of water and chloride ions can be effectively prevented, corrosion of steel bars is effectively restrained, and meanwhile the fire resistance of the reinforced concrete column after reinforcement is improved.
本发明提供一种自锁式ECC覆层钢筋混凝土柱加固方法，包括将第一角钢和第二角钢固定在钢筋混凝土柱的4个角上；将若干条钢绞线自上而下间隔一定距离均匀环绕在钢筋混凝土柱并固定在第二角钢上，形成钢绞线网；对每条钢绞线施加预应力；在钢筋混凝土柱1表面喷射或涂抹ECC，ECC覆盖第一角钢、第二角钢及若干条钢绞线，填充间隙，完成加固，其中，ECC中各组分与水泥按重量比值为粉煤灰：0.5～3；细砂：0.5～1.5；硅灰：0～0.1；水：0.5～2；PVA纤维：0.02～0.1；减水剂：0.005～0.02；速凝剂：0.01～0.1，该方法可以增大钢筋混凝土柱的承载能力，对钢筋混凝土柱产生较大的约束作用，且可有效防止水和氯离子的侵入，有效抑制了钢筋的锈蚀，同时也提升了加固后的钢筋混凝土柱的抗火性能。
Self-locking ECC coating reinforced concrete column reinforcing method
The invention provides a self-locking ECC coating reinforced concrete column reinforcing method. The self-locking ECC coating reinforced concrete column reinforcing method comprises the steps that first angle steel and second angle steel are fixed to the four corners of a reinforced concrete column; uniformly surrounding the reinforced concrete column with a plurality of steel strands at certain intervals from top to bottom and fixing the steel strands on the second angle steel to form a steel strand net; prestress is applied to each steel strand; ECC is sprayed or smeared on the surface of the reinforced concrete column 1, the ECC covers the first angle steel, the second angle steel and the multiple steel strands, gaps are filled, reinforcement is completed, and the weight ratio of all components in the ECC to cement is 0.5-3, 0.5 to 1.5 parts of fine sand, 0 to 0.1 part of silica fume, 0.5 to 2 parts of water, 0.02 to 0.1 part of PVA fiber, 0.005 to 0.02 part of a water reducing agent, and 0.01 to 0.1 part of accelerating agent. By means of the method, the bearing capacity of the reinforced concrete column can be improved, a large restraining effect on the reinforced concrete column is achieved, invasion of water and chloride ions can be effectively prevented, corrosion of steel bars is effectively restrained, and meanwhile the fire resistance of the reinforced concrete column after reinforcement is improved.
本发明提供一种自锁式ECC覆层钢筋混凝土柱加固方法，包括将第一角钢和第二角钢固定在钢筋混凝土柱的4个角上；将若干条钢绞线自上而下间隔一定距离均匀环绕在钢筋混凝土柱并固定在第二角钢上，形成钢绞线网；对每条钢绞线施加预应力；在钢筋混凝土柱1表面喷射或涂抹ECC，ECC覆盖第一角钢、第二角钢及若干条钢绞线，填充间隙，完成加固，其中，ECC中各组分与水泥按重量比值为粉煤灰：0.5～3；细砂：0.5～1.5；硅灰：0～0.1；水：0.5～2；PVA纤维：0.02～0.1；减水剂：0.005～0.02；速凝剂：0.01～0.1，该方法可以增大钢筋混凝土柱的承载能力，对钢筋混凝土柱产生较大的约束作用，且可有效防止水和氯离子的侵入，有效抑制了钢筋的锈蚀，同时也提升了加固后的钢筋混凝土柱的抗火性能。
Self-locking ECC coating reinforced concrete column reinforcing method
一种自锁式ECC覆层钢筋混凝土柱加固方法
LI SHAN (Autor:in) / LU YIYAN (Autor:in) / YAN YUHONG (Autor:in) / LIU ZHENZHEN (Autor:in) / LIANG HONGJUN (Autor:in) / ZHENG AOHAN (Autor:in)
25.08.2020
Patent
Elektronische Ressource
Chinesisch
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