预应力中空棒构件设计与力学特性

doi:10.6040/j.issn.1672-3961.0.2019.425

摘要/Abstract

摘要： 为满足装配式建筑节点接缝混凝土抗震性能的需要,以一种自平衡预应力中空棒为研究对象,研究接缝位置短杆件施加预应力的效果。根据力的平衡机理,对结构内部钢棒施加压力使结构外部钢管协调受力拉伸,达到设计预应力后由螺母锁定,将杆件埋入到装配式节点接缝混凝土,浇筑早强灌浆料,待固结达到预定强度释放反力棒,依靠外螺纹结构与混凝土的粘结力自锚实现接缝混凝土施加预应力。力学性能分析方面,研究杆件张拉阶段、静置松弛阶段应力变化及损失情况,验证了杆件张拉完成至放张前应力存储的有效性,通过分析杆件放张后应力分布、预应力损失等参数,验证了杆件应用到节点混凝土后传递应力的机理及有效性,并采用有限元方法分析预应力混凝土构件应力分布规律。研究结果表明预应力中空棒技术作用于装配式节点接缝混凝土具有较高的抗震和耗能能力,对装配式建筑节点混凝土高抗震性能的实现提供了一种新的技术手段。

关键词: 自平衡预应力中空棒, 接缝混凝土, 应力分布, 预应力损失, 有限元

Abstract: To meet the needs of the seismic performance of concrete at the node joints of assembled buildings, a self-balancing prestressing hollow bar was used to realize the effect of pre-stressing the short rod at the joint position. According to the force balancing mechanism, pressure was applied to the steel rod inside the structure, which led to the coordinated tension in the steel tube outside the structure to achieve the design. After pre-stressing and locking by the nut, bury the rod into the concrete of the joints of the assembled nodes, pour the early-strength grout, and wait for the consolidation to reach the predetermined level. Strength-releasing reaction rods, relying on the self-anchoring of the bond between the external threaded structure and the concrete to achieve the pre-stress applied to the joint concrete. The stress changes and losses in the tensile and static relaxation phases of the rod were investigated, and the tensile and static relaxation phases of the rod were verified. The validity of stress storage from completion until release was verified by analyzing parameters such as stress distribution and prestressing losses after the rod was released. The mechanism and effectiveness of stress transmission after application for odal concrete and the analysis of stresses in prestressed concrete members using finite element method distribution pattern. The pre-stressing hollow bar technology acting on the assembly nodal joints concreted has high seismic and energy-consuming capacity for assembly building the realization of high seismic performance of nodal concrete provides a new technical approach.

Key words: self-balancing prestressed hollow bar, joint concrete, stress distribution, prestress loss, finite element

中图分类号:

TU741

林超,张程林,王勇. 预应力中空棒构件设计与力学特性[J]. 山东大学学报 (工学版), 2020, 50(5): 26-32.

LIN Chao, ZHANG Chenglin, WANG Yong. Design and mechanical properties of prestressed hollow bar[J]. Journal of Shandong University(Engineering Science), 2020, 50(5): 26-32.

参考文献

[1] 朱张峰,郭正兴.预制装配式剪力墙结构节点抗震性能试验研究[J].土木工程学报, 2012,45(1):69-76. ZHU Zhangfeng, GUO Zhengxing. Experimental study on seismic behavior of prefabricated shear wall joints[J]. China Civil Engineering Journal, 2012, 45(1): 69-76.
[2] 王慧英.预制混凝土工业化住宅结构体系研究[D].广州:广州大学,2007. WANG Huiying. Study on the structural system of prefabricated concrete industrial residence[D]. Guangzhou: Guangzhou University, 2007.
[3] 范力,吕西林,赵斌.预制混凝土框架结构抗震性能研究综述[J].结构工程师,2007(8):90-97. FAN Li, LÜ Xilin, ZHAO Bin. Summary of research on seismic performance of precast concrete frame structure[J]. Structural Engineer, 2007(8): 90-97.
[4] 金成棣.预应力混凝土梁拱组合桥梁[M].北京:人民交通出版社,2001.
[5] 郭子雄,张杰,李传林. 预应力钢板箍加固高轴压比框架柱抗震性能研究[J]. 土木工程学报,2009,42(12): 112-117. GUO Zixiong, ZHANG Jie, LI Chuanlin. Seismic behavior of frame columns with high axial compression ratio strengthened by prestressed steel plate hoops[J]. China Civil Engineering Journal, 2009, 42(12): 112-117.
[6] 黄群贤,郭子雄,崔俊,等.预应力钢丝绳加固 RC框架节点抗震性能试验研究[J].土木工程学报, 2015,48: 6-18. HUANG Qunxian, GUO Zixiong, CUI Jun, et al. Experimental study on seismic behavior of RC frame joints strengthened with prestressing wire rope[J]. China Civil Engineering Journal, 2015, 48: 6-18.
[7] JR PARENTE E, NOGUEIRA GV, MEIRELES Neto M, et al. Material and geometricnonlinear analysis of reinforced concrete frames[J]. Revista Ibracon de Estruturase Materiais, 2014, 7:879-904.
[8] LOU T, LOPES S, LOPES A. Numerical modeling of externally prestressed steel-concrete composite beams[J]. J Constr Steel Res, 2016, 121:29-36.
[9] RUEY Shyangju, HUNG Jenlee, CHENG Chengchen, et al. Experimental study on separating reinforced concrete infill walls from steel moment frames[J]. Journal of Constructional Steel Research, 2012, 71:119-128.
[10] CHOI I R, PARK H G. Ductility and energy dissipation capacity of shear-dominated steel plate walls[J]. Journal of Structural Engineering ASCE, 2008, 134(9): 1495-1507.
[11] EROCHKO J, CHRISTOPOULOS C, TREMBLAY R. Design, testing, and detailed component modeling of a high-capacity self-centering energy-dissipative brace[J]. Journal of Structural Engineering, 2015, 141(8): 1-13.
[12] KAYA M, ARSLAN A S. Analytical modeling of post-tensioned precast beam-to-column connections[J]. Materials and Design, 2009, 30(9):3802-3811.
[13] PARENTE Jr E, NOGUEIRA GV, Meireles Neto M, et al. Material and geometric nonlinear analysis of reinforced concrete frames[J]. Revista Ibracon de Estruturase Materiais, 2014, 7:879-904.
[14] 李向民,高润东,许清风,等.等预制装配式混凝土框架高效延性节点试验研究[J].中南大学学报(自然科学版), 2013,44(8):3453-3463. LI Xiangmin, GAO Rundong, XU Qingfeng, et al. Experimental study on efficient ductility joints of prefabricated concrete frames[J]. Journal of Central South University, 2013, 44(8):3453-3463.
[15] 柳炳康,黄慎江,宋满荣,等.预制预应力混凝土装配整体式框架拟动力试验研究[J].地震工程与工程振动,2010,30(5):65-71. LIU Bingkang, HUANG Shenjiang, SONG Manrong, et al. Pseudo dynamic test of prefabricated prestressed concrete integral frame[J]. Earthquake Engineering and Engineering Vibration, 2010, 30(5):65-71.
[16] MORGEN, BRIAN G, YAHYA C Kurama. Seismic design of friction-damped precast concrete frame structures[C] //Proceedings of the Structures Congress and Exposition, Metropolis and Beyond-Proceedings of the 2005 Structures Congress and the 2005 Forensic Engineering. New York, USA: IEEE, 2005: 2007-2018.

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