RESEARCH ON SHEAR PERFORMANCES OF CONCRETE DEEP BEAMS MIXED WITH DESERT SAND WITHOUT WEB REINFORCEMENT

QIN Yongjun; LI Xiangyang; CUI Zhuang; WANG Bo

doi:10.13204/j.gyjzG20081505

Volume 51 Issue 9

Jan. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2021 > 51(9): 98-105

QIN Yongjun, LI Xiangyang, CUI Zhuang, WANG Bo. RESEARCH ON SHEAR PERFORMANCES OF CONCRETE DEEP BEAMS MIXED WITH DESERT SAND WITHOUT WEB REINFORCEMENT[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(9): 98-105. doi: 10.13204/j.gyjzG20081505

Citation:

QIN Yongjun, LI Xiangyang, CUI Zhuang, WANG Bo. RESEARCH ON SHEAR PERFORMANCES OF CONCRETE DEEP BEAMS MIXED WITH DESERT SAND WITHOUT WEB REINFORCEMENT[J]. INDUSTRIAL CONSTRUCTION, 2021, 51(9): 98-105. doi: 10.13204/j.gyjzG20081505

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RESEARCH ON SHEAR PERFORMANCES OF CONCRETE DEEP BEAMS MIXED WITH DESERT SAND WITHOUT WEB REINFORCEMENT

doi: 10.13204/j.gyjzG20081505

1. School of Architecture and Engineering, Xinjiang University, Urumqi 830047, China;
2. Xinjiang Civil Engineering Technology Research Center, Urumqi 830047, China

Received Date: 2020-08-15
Available Online: 2022-01-11

Abstract

Abstract

The shear performances of concrete deep beams mixed with desert sand were studied, the shear tests for 8 concrete deep beams with desert sand without web reinforcement were conducted subjected to concentrated loads, and the laws of shear-span ratios, reinforcement ratios and the content of desert sand on the mid-space deflection, cracking load, ultimate load, concrete strain and rebar strain of deep beams were analyzed, as well as the damage forms and crack evolution. The test results showed that these specimens didn't conform to the assumption of the plane section when they were damaged. The ultimate load decreased with the increase of shear-span ratios, increased with the increase of reinforcement ratios, increased first and then decreased with the increase of the content of desert sand, and reached its maximum bearing capacity when the content of desert sand was 20%. In the same loads, the mid-span deflection increased first and then decreased with the increase of shear-span ratios, reinforcement ratios and the content of desert sand. The calculation methods of deep beams from Chinese standard GB 50010-2010 and the codes of United States, Canada and Europe were modified, finally the formula for calculating the shear bearing capacity of deep beams mixed with desert sand was proposed.
- deep flexural member,
- shear behavior,
- deflection,
- strain,
- strut-and-tie model

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References(16)

References

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