基于损伤指数模型的叠合装配式地下管廊节点损伤分析

针对地下管廊结构，设计了现浇和叠合装配式两种不同形式的节点，通过低周反复荷载试验进行地震损伤研究。试验结果表明，叠合装配式节点具有和现浇形式的节点相近的结构性能。结合试验结果，基于修正的Park-Ang双参数地震损伤模型和修正的欧进萍双参数地震损伤模型，对地下管廊结构节点的损伤模型进行了对比分析。研究表明，修正的欧进萍双参数地震损伤模型与试验结果符合较好，能正确地反映节点从开始加载到失效的整个过程，可用于此种现浇和叠合装配式节点的损伤分析。

Damage analysis of superimposed prefabricated joints of underground tunnel based on damage index model

Two different types of joints which are cast-in-place and superimposed prefabricated were designed for the underground tunnel structure to carry out seismic damage study through low cyclic loading test. The results also indicate that that the superimposed prefabricated joints have the similar structural properties to those of cast-in-place ones. According to the test results, damage models of joints of the underground tunnel structure were compared and analyzed based on the commonly-used modified Park-Ang double parameter seismic damage model and modified Jing-Ping Ou double parameter seismic damage model. The results indicate that modified Jing-Ping Ou double parameter seismic damage model is in good agreement with the experimental results. It can correctly reflect the whole process of the joints from the beginning to the failure. And it can be applied to the damage analysis of cast-in-place and superimposed prefabricated joints.