EXPERIMENTAL RESEARCH ON ASEISMIC PERFORMANCES OF PREFABRICATED SHEAR WALL CONNECTED BY UHPC

ZHENG Qizhen; LI Huiyan; LONG Libo; CHEN Gang

doi:10.13204/j.gyjzG20042601

Volume 51 Issue 9

Jan. 2022

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ZHENG Qizhen, LI Huiyan, LONG Libo, CHEN Gang. EXPERIMENTAL RESEARCH ON ASEISMIC PERFORMANCES OF PREFABRICATED SHEAR WALL CONNECTED BY UHPC[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(9): 82-89. doi: 10.13204/j.gyjzG20042601

Citation:

ZHENG Qizhen, LI Huiyan, LONG Libo, CHEN Gang. EXPERIMENTAL RESEARCH ON ASEISMIC PERFORMANCES OF PREFABRICATED SHEAR WALL CONNECTED BY UHPC[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(9): 82-89. doi: 10.13204/j.gyjzG20042601

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EXPERIMENTAL RESEARCH ON ASEISMIC PERFORMANCES OF PREFABRICATED SHEAR WALL CONNECTED BY UHPC

doi: 10.13204/j.gyjzG20042601

1. University of Shanghai for Science and Technology, Shanghai 200093, China;
2. The Second Company of Shanghai Construction Group Co., Ltd., Shanghai 200090, China

Received Date: 2020-04-26
Available Online: 2022-01-11

Abstract

Abstract

A new precast shear wall connected by ultra high performance concrete (UHPC) was introduced in the paper. 5 full-scale shear walls were designed to study the aseismic performances of the precast shear wall subjected to quasi-static cyclic loads. The experiment results showed that the prefabricated shear wall with horizontal joints and the cast-in-place wall failed in the same compression-bending mode, the concrete at the bottom of the prefabricated shear wall crushed badly. The shear wall with vertical joints failed in bending-shear mode while a subtle sidesway was observed and the vertical rebars ruptured. For the prefabricated shear wall in the axial compression ratio of 0.35, the thickness of the protective layer of UHPC was small because of the poor quality of the casting, resulting in insufficient anchoring of the rebars in the post-casting area. The new connection form could transfer the stress of rebars effectively, the shear wall with horizontal joints or vertical joints showed slightly higher bearing capacity than the cast-in-place in same axial compression ratio, and the displacement ductility and energy-dissipation capacity were extremely closed. The ultimate shift angles of the 5 shear walls were larger than 1/100, meeting the requirements of GB 50011-2010 Code for Seismic Design of Building.
- prefabricated shear wall,
- rebar short-lapped,
- UHPC,
- quasi-static cyclic test,
- aseismic performance

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References(9)

References

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