预埋钢筋和植筋锚固长度的对比分析  

Contrastive analysis on anchorage length of pre-embedded and post-embedded bar

作　　者：霍艳华[1] 熊进刚[2] 

机构地区：[1]南昌大学科技学院,江西南昌330029 [2]南昌大学建筑工程学院,江西南昌330029

出　　处：《混凝土》2011年第6期136-139,共4页Concrete

摘　　要：基于现行混凝土结构设计规范和混凝土结构加固技术规范中关于普通预埋钢筋和植筋锚固长度的要求,分析了预埋钢筋和植筋锚固原理、破坏形态和影响因素,对预埋钢筋和植筋的锚固长度进行了计算分析。结果表明：植筋锚固长度总体低于预埋锚固长度,植筋锚固长度是预埋锚固长度的60%~80%。《混凝土结构加固设计规范》中给出的一般构件植筋锚固长度是恰当的,而悬挑构件和非悬挑重要构件的植筋深度可能偏小。《混凝土结构加固设计规范》规定的悬挑构件和非悬挑重要构件的植筋深度应适当增大。Based on the anchorage length demands of pre-embedded and post-embedded bars in the current concrete structure design code and strengthening concrete structure code,anchorage principles,failure pattern and the influence factors of pre-embedded and post-embedded bars are analyzed.the anchorage length of pre-embedded and post-embedded bars is calculated and compared.Results show that the anchorage length of post-embedded bars is overall below that of pre-embedded bars,and he anchorage length of post-embedded bars is 60%~80% of that of pre-embedded bars.The anchorage length demand of the ordinary component in the current code for strengthening concrete structure is appropriate,but the anchorage length of the overhung component and the non-overhung important component may be small.The anchorage length of the overhung component and the non-overhung important component in the current code for strengthening concrete structure should be appropriately increased.

关 键 词：植筋 预埋钢筋 锚固长度 

分 类 号：TU528.01[建筑科学—建筑技术科学]