节段预制拼装桥墩接缝承载能力的影响因素分析

胡皓

doi:10.13204/j.gyjz202003015

节段预制拼装桥墩接缝承载能力的影响因素分析

doi: 10.13204/j.gyjz202003015

胡皓

上海市城市建设设计研究总院(集团)有限公司, 上海 200125

详细信息

作者简介:
胡皓,男,1990年出生,博士,工程师。电子信箱:h834497178@126.com

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- 文章访问数: 73
- HTML全文浏览量: 8
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2019-07-09

INFLUENCING FACTOR ANALYSIS ON THE BEARING CAPACITY OF JOINTS IN PRECAST CONCRETE SEGMENTAL BRIDGE COLUMNS

HU Hao

Shanghai Urban Construction Design&Research Institute(Group) Co., Ltd., Shanghai 200125, China

摘要

摘要: 为了分析节段式桥墩接缝承载能力的影响因素，建立了节段式桥墩受力性能的数值分析方法，对可能影响接缝承载能力的轴压力、配箍率、预应力筋初始张拉应力及砂浆层强度等因素进行了全面的参数分析。研究结果表明：采用数值分析方法可以较为满意地反映出节段式桥墩在压弯剪耦合作用下不同阶段的受力特点；当设计轴压比由13%增大到33%时，普通钢筋配筋桥墩接缝承载力提高40.3%，钢绞线配筋桥墩接缝承载力提高17.8%；增大预应力筋有效应力可以较小程度地增大接缝承载力；当砂浆层强度等级由C80降低到C40时，接缝承载力降低19.7%。
- 接缝承载能力 /
- 数值分析 /
- 节段预制拼装桥墩
Abstract: To analyze the influencing factors of bearing capacity of joints in segmental columns, the numerical analysis method of mechanical properties of segmental columns was proposed. Comprehensive parametric analysis was then conducted to obtain the influence of the factors such as axial compression force, stirrup ratio, initial tension stress of prestressing tendons, and strength of mortar layer. The results indicated that: the stress features of the segmental columns in different stages could be satisfactorily reflected by the numerical analysis method under axial-flexure-shear coupling behavior; when the design axial compression ratio increased from 13% to 33%, the ultimate bearing capacity of the joints in coventionally reinforced concrete segmental columns increased by 40.3%, and the ultimate bearing capacity of the joints in prestressed concrete segmental columns increased by 17.8%; increasing the initial prestressing stress of prestressing tendons could improve the bearing capacity of joints to a lesser degree; when the strength grade of the mortar layer decreased from C80 to C40, the ultimate bearing capacity of the joints decreased by 19.7%.
- bearing capacity of joints /
- numerical analysis /
- precast concrete segmental bridge columns

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参考文献(19)

OU Y C. Precast Segmental Post-Tensioned Concrete Bridge Columns for Seismic Regions[D]. Buffalo:University of Buffalo, 2007.

FHWA. Connection Details for Prefabricated Bridge Elements and Systems:FHWA-IF-09-010[S]. McLean,V.A.:Federal Highway Administration, 2009.

黄国斌,查义强.上海公路桥梁桥墩预制拼装建造技术[J].上海公路,2014(4):1-5.

PANTELIDES C P, AMELI M J, REAVELEY L D. Evaluation of Grouted Splice Sleeve Connections for Precast Reinforced Concrete Bridge Piers[R]. Salt Lake City:University of Utah, 2017.

AIDA H, TANIMURA Y, TADOKORRO T, et al. Cyclic Loading Experiment of Precast Columns of Railway Rigid-Frame Viaduct Installed with NMB Splice Sleeves[J]. Proceedings of the Japan Concrete Institute, 2005, 27(2):613-618.

OU Y C, ALRASYID H, HABER Z B, et al. Cyclic Behavior of Precast High-Strength Reinforced Concrete Columns[J]. ACI Structural Journal, 2015, 112(6):839-850.

李田田.城市高架节段预制拼装墩柱构造及抗震性能研究[D].上海:同济大学,2013.

王昊.不同连接构造的预制拼装墩柱抗震性能研究[D].上海:同济大学,2014.

QU H Y, LI T T, WANG Z Q, et al. Investigation and Verification on Seismic Behavior of Precast Concrete Frame Piers Used in Real Bridge Structures:Experimental and Numerical Study[J]. Engineering Structures, 2018, 154:1-9.

ZHENG L X. Grouted Precast Concrete Column Connections Under Reversed Cyclic Bending and Compression[J]. ACI Structural Journal, 1996, 93(3):247-256.

BELLERI A, RIVA P. Seismic Performance and Retrofit of Precast Concrete Grouted Sleeve Connections[J]. PCI Journal, 2012, 57(1):97-109.

HABER Z B, SAIIDI M S, SANDERS D H. Seismic Performance of Precast Columns with Mechanically Spliced Column-Footing Connections[J]. ACI Structural Journal, 2014, 113(3):639-650.

Federal Highway Administration(FHWA). Accelerated Bridge Construction Manual[M]. Mclean,V.A.:FHWA, 2011.

LI G P, YANG D H, LEI Y. Combined Shear and Bending Behavior of Joints in Precast Concrete Segmental Beams with External Tendons[J]. Journal of Bridge Engineering, 2013, 18(10):1042-1052.

BU Z Y, DING Y, CHEN J, et al. Investigation of the Seismic Performance of Precast Segmental Tall Bridge Columns[J]. Structural Engineering & Mechanics, 2012, 43(3):287-309.

WANG J C, OU Y C, CHANG K C, et al. Large-Scale Seismic Tests of Tall Concrete Bridge Columns with Precast Segmental Construction[J]. Earthquake Engineering & Structural Dynamics, 2010, 37(12):1449-1465.

LI G P, HU H, ZHAO S H. Axial-Shear-Flexure Interaction Behavior of Joints in Precast Concrete Segmental Bridge Columns[J]. Journal of Bridge Engineering, 2018, 23(10).DOI: 10.1061/(ASCE)BE.1943-5592.0001276.

中华人民共和国住房和城乡建设部.混凝土结构设计规范:GB 50010-2010[S].北京:中国建筑工业出版社,2010.

SIDERIS P. Nonlinear Quasi-Static Analysis of Hybrid Sliding-Rocking Bridge Columns Subjected to Lateral Loading[J]. Engineering Structures, 2015, 101:125-137.

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