新型装配整体式纤维再生混凝土剪力墙抗震性能及抗剪承载力研究

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振动与冲击 ›› 2021, Vol. 40 ›› Issue (19) : 98-106.

论文

黄炜1,2,3，孙玉娇1,2,3，盛亚文4，李斌5，黄惠1,2,3

作者信息 +

Aseismic performance and anti-shear capacity of a new prefabricated monolithic fibre-reinforced recycled concrete shear wall

HUANG Wei1,2,3, SUN Yujiao1,2,3, SHENG Yawen4, LI Bin5, HUANG Hui1,2,3

Author information +

文章历史 +

摘要

新型装配整体式纤维再生混凝土(NPFRC)剪力墙由预制绿色纤维混凝土墙板以及现浇边缘构件组成，采用井字形布筋、竖向马牙槎连接及水平坐浆连接，具有生态节能、耗能减震、快速建造等特点。为研究NPFRC剪力墙的抗震性能，制作了4榀试件，通过拟静力试验，分析了纤维种类及墙体加工方式对试件破坏形态、滞回曲线、变形性能、刚度退化以及耗能能力等的影响。试验结果表明，纤维种类对NPFRC剪力墙抗震性能的影响较大，墙板与基础的连接对NPFRC剪力墙的承载力起决定性的作用，加强水平拼缝连接是NPFRC剪力墙研究的关键。基于软化拉压杆模型，考虑纤维对NPFRC剪力墙抗剪强度的增强作用，提出了新型装配整体式纤维再生混凝土剪力墙受剪承载力公式，并将理论值与试验结果进行比较。对比分析结果表明，理论计算值低于试验值约3%~9%，偏保守，具有较好的精度。

Abstract

New prefabricated monolithic fiber-reinforced recycled concrete (NPFRC) shear wall is composed of prefabricated green fiber reinforced concrete wall panels and cast-in-place edge members to adopt well-shaped reinforcement arrangement, vertical horse toothed joint and horizontal mortar setting connection, and have characteristics of ecological energy saving, energy consumption and shock absorption, rapid construction and so on. Here, to study aseismic performance of NPFRC shear walls, four specimens were made. Through quasi-static tests, effects of fiber types and wall processing methods on failure mode, hysteretic curve, deformation performance, stiffness degradation and energy dissipation capacity of specimens were analyzed. The test results showed that fiber types have a larger influence on aseismic performance of NPFRC shear wall; connections between wall panels and foundation are decisive to keep load-bearing capacity of NPFRC shear wall; strengthening horizontal seam connection is the key to study NPFRC shear wall. Based on the softened strut-and-tie model, considering fiber action to strengthen anti-shear strength of NPFRC shear wall, the shear-bearing capacity formula of NPFRC shea wall was proposed, and theoretical values were compared with test results. The contrastive analysis results showed that theoretical value is about 3%-9% lower than test one, so the former is conservative and has a good accuracy.

导出引用

黄炜，孙玉娇，盛亚文，李斌，黄惠. 新型装配整体式纤维再生混凝土剪力墙抗震性能及抗剪承载力研究[J]. 振动与冲击, 2021, 40(19): 98-106

HUANG Wei, SUN Yujiao, SHENG Yawen，LI Bin, HUANG Hui. Aseismic performance and anti-shear capacity of a new prefabricated monolithic fibre-reinforced recycled concrete shear wall[J]. Journal of Vibration and Shock, 2021, 40(19): 98-106

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