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CFRP 1

FRP 1

cable anchorage end failure 1

cable prestress loss 1

concrete 1

damage 1

deflections 1

elevated temperatures 1

external prestress 1

full scale test 1

model test 1

post-tensioned concrete beams 1

prestress 1

residual prestress 1

secondary transfer length 1

segmental precast 1

single-layer plane cable net supported glass curtain wall 1

stiffness contribution of glass panels 1

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Secondary transfer length and residual prestress of fractured strand in post-tensioned concrete beams

Lizhao DAI; Wengang XU; Lei WANG; Shanchang YI; Wen CHEN

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 3, Pages 388-400 doi: 10.1007/s11709-022-0809-1

Abstract: beams to explore the effects of different fracture positions on secondary transfer length and residual prestressA numerical model is developed and used to predict the secondary transfer length and residual prestressThe residual prestress of fractured strand increases gradually in the secondary transfer length, andWhen the fractured strand is fully anchored in concrete, a minor prestress loss will appear, and theaverage prestress loss is 2.28% in the present study.

Keywords： post-tensioned concrete beams strand fracture secondary transfer length residual prestress

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Deflection behavior of a prestressed concrete beam reinforced with carbon fibers at elevated temperatures

Mohammed FARUQI, Mohammed Sheroz KHAN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1, Pages 81-91 doi: 10.1007/s11709-018-0468-4

Abstract: Fiber reinforced polymer(FRP) have unique advantages like high strength to weight ratio, excellent corrosion resistance, improving deformability and cost effectiveness. These advantages have gained wide acceptance in civil engineering applications. FRP tendons for prestressing applications are emerging as one of the most promising technologies in the civil engineering industry. However, the behavior of such members under the influence of elevated temperatures is still unknown. The knowledge and application of this could lead to a cost effective and practical considerations in fire safety design. Therefore, this study examines the deflection behavior of the carbon fiber reinforced polymer(CFRP) prestressed concrete beam at elevated temperatures. In this article, an analytical model is developed which integrates the temperature dependent changes of effective modulus of FRP in predicting the deflection behavior of CFRP prestressed concrete beams within the range of practical temperatures. This model is compared with a finite element mode (FEM) of a simply supported concrete beam prestressed with CFRP subjected to practical elevated temperatures. In addition, comparison is also made with an indirect reference to the real behavior of the material. The results of the model correlated reasonably with the finite element model and the real behavior. Finally, a practical application is provided.

Keywords： FRP CFRP concrete elevated temperatures deflections prestress

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Full scale model test of segmental precast concrete box girder with external and internal tendons

Zheng Kaiqi,Bu Hongqi,Liu Zhao,Hui Zhuo,Lv Zhitao

Strategic Study of CAE 2013, Volume 15, Issue 8, Pages 89-94

Abstract: Also, the stress increment of prestress tendons is linear to the mid-span moment change.

Keywords： segmental precast model test external prestress full scale test

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Influence of damages on static behavior of single-layer cable net supported glass curtain wall: full-scale model test

Gang SHI, Yongjiu SHI, Yuanqing WANG, Yongzhi ZUO, Xiaohao SHI, Zaoyang GUO,

Frontiers of Structural and Civil Engineering 2010, Volume 4, Issue 3, Pages 383-395 doi: 10.1007/s11709-010-0074-6

Abstract: Two kinds of damages that are the cable prestress loss and cable anchorage end failure are led into theThe results show that the maximum change rate of nodal deflection is 13.78% for the damage of cable prestress

Keywords： single-layer plane cable net supported glass curtain wall damage cable prestress loss cable anchorage