留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

踮脚和跳跃荷载下全装配式RC楼盖振动特性试验研究

庞瑞 王文康 张天鹏 徐科

庞瑞, 王文康, 张天鹏, 徐科. 踮脚和跳跃荷载下全装配式RC楼盖振动特性试验研究[J]. 工程力学, 2020, 37(11): 209-218, 256. doi: 10.6052/j.issn.1000-4750.2020.03.0192
引用本文: 庞瑞, 王文康, 张天鹏, 徐科. 踮脚和跳跃荷载下全装配式RC楼盖振动特性试验研究[J]. 工程力学, 2020, 37(11): 209-218, 256. doi: 10.6052/j.issn.1000-4750.2020.03.0192
Rui PANG, Wen-kang WANG, Tian-peng ZHANG, Ke XU. EXPERIMENTAL STUDY ON THE VIBRATION CHARACTERISTICS OF UNTOPPED PRECAST RC FLOORS UNDER BOUNCEAND JUMPING LOADS[J]. Engineering Mechanics, 2020, 37(11): 209-218, 256. doi: 10.6052/j.issn.1000-4750.2020.03.0192
Citation: Rui PANG, Wen-kang WANG, Tian-peng ZHANG, Ke XU. EXPERIMENTAL STUDY ON THE VIBRATION CHARACTERISTICS OF UNTOPPED PRECAST RC FLOORS UNDER BOUNCEAND JUMPING LOADS[J]. Engineering Mechanics, 2020, 37(11): 209-218, 256. doi: 10.6052/j.issn.1000-4750.2020.03.0192

踮脚和跳跃荷载下全装配式RC楼盖振动特性试验研究

doi: 10.6052/j.issn.1000-4750.2020.03.0192
基金项目: 国家自然科学基金项目(51778214);中原青年拔尖人才支持项目(ZYQR201912170);河南省属高校基本科研业务专项基金项目(2017RCJH04)
详细信息
    作者简介:

    王文康(1993−),男,河南禹州人,硕士生,从事装配式混凝土结构研究(E-mail: 1143557931@qq.com)

    张天鹏(1994−),男,河南南阳人,硕士生,从事装配式混凝土结构研究(E-mail: 1351863198@qq.com)

    徐 科(1997−),男,河南开封人,硕士生,从事装配式混凝土结构研究(E-mail: 836528868@qq.com)

    通讯作者:

    庞 瑞(1981−),男,河南信阳人,副教授,工学博士,硕导,从事装配式混凝土结构研究(E-mail: seupangrui@163.com)

  • 中图分类号: TU375.2

EXPERIMENTAL STUDY ON THE VIBRATION CHARACTERISTICS OF UNTOPPED PRECAST RC FLOORS UNDER BOUNCEAND JUMPING LOADS

  • 摘要: 为研究分布式连接全装配RC楼盖(DCPCD)在人致激励下的动力特性和振动响应,进行了6个足尺DCPCD试件和1个现浇对比试件的锤击法试验和在踮脚、单人跳跃荷载下的人致激励试验,研究了板缝和连接件布置对DCPCD振动特性的影响。结果表明:DCPCD与现浇楼盖的低阶振型基本相同,但自振频率略低;DCPCD与现浇楼盖有相同的振动传递机制;相同激励下DCPCD的振动响应略大于现浇楼盖,现浇楼盖的加速度峰值出现在跨中的边缘,DCPCD的加速度峰值出现在近跨中板缝的边缘;DCPCD的自振频率随连接件的增加而提高,随板缝的增加降低,连接件对频率的影响大于板缝的影响;提出了两对边简支条件下DCPCD横板向竖向自振频率与加速度计算方法,并以试验验证了所提方法的准确性。
  • 图  1  DCPCD体系示意图

    Figure  1.  Schematic diagram of DCPCD

    图  2  试件S5C3结构平面布置图 /mm

    Figure  2.  Plane of specimen S5C3

    图  3  预制板配筋详图 /mm

    Figure  3.  Details of PC slab reinforcement

    图  4  连接件详图 /mm

    Figure  4.  Details of slab joint connectors

    图  5  试验装置

    Figure  5.  Test setup

    图  6  锤击法模态试验流程图

    Figure  6.  Flow chart of hammer modal test

    图  7  加速度传感器布置图 /mm

    Figure  7.  Layout of acceleration sensors

    图  8  幅频曲线

    Figure  8.  Amplitude-frequency curve

    图  9  人致激励试验现场照片

    Figure  9.  Photos of human incentive test

    图  10  1 Hz跳跃荷载下的加速度响应

    Figure  10.  Acceleration response under 1 Hz jump load

    图  11  1 Hz跳跃荷载下各试件8点响应

    Figure  11.  Response of eight measurement points of each component under 1 Hz jump load

    图  12  各测点加速度

    Figure  12.  Acceleration of each measuring point

    图  13  各工况下的加速度响应

    Figure  13.  Acceleration response under various operating conditions

    图  14  强迫振动的放大系数

    Figure  14.  Amplification factor of forced vibration

    表  1  试件设计

    Table  1.   Specimen design

    试件编号板缝构造每条板缝连接件数/个
    CISS
    S3C23块预制板2条板缝2
    S3C33块预制板2条板缝3
    S4C24块预制板3条板缝2
    S4C34块预制板3条板缝3
    S5C25块预制板4条板缝2
    S5C35块预制板4条板缝3
    注:试件编号采用“S-C-”格式,其中,S代表预制板个数,C代表每条板缝连接件个数。
    下载: 导出CSV

    表  2  钢筋(板)实测力学性能

    Table  2.   Mechanical properties of steel bars (plate)

    钢筋(板)规格屈服强度fy/MPa抗拉强度fu/MPa
    8443.33633.74
    10380.34668.61
    Q345钢板463.11518.33
    下载: 导出CSV

    表  3  混凝土实测力学性能

    Table  3.   Mechanical properties of concrete

    试块编号立方体抗压强度fcu/MPa抗压强度实测值fcb/MPa弹性模量Ec/MPa
    S133.2922.263.09×104
    S231.3120.943.01×104
    S331.1420.833.03×104
    均值31.9121.343.04×104
    下载: 导出CSV

    表  4  各试件前3阶振型

    Table  4.   First three mode shapes of each component

    试件CISS(现浇试件)S3C2(3板2连接件试件)S4C2(4板2连接件试件)S5C2(5板2连接件试件)
    一阶振型
    二阶振型
    三阶振型
    下载: 导出CSV

    表  5  实测一阶频率对比

    Table  5.   First-order frequency comparison

    试件编号一阶频率f/HzDCPCD试件/CISS试件锤击法实测阻尼比ξ/(%)
    CISS13.631.001.16
    S3C28.690.643.19
    S3C310.040.741.20
    S4C28.190.603.66
    S4C39.030.662.15
    S5C27.570.565.32
    S5C39.130.672.08
    下载: 导出CSV

    表  6  各试件抗弯刚度对比

    Table  6.   Comparison of bending stiffness of specimens

    试件编号CISSS3C2S3C3S5C2S5C3
    D/MPa4.651.472.031.201.68
    D/D′1.000.320.440.260.36
    注:D为DCPCD试件的抗弯刚度;D′为现浇试件的抗弯刚度。
    下载: 导出CSV

    表  7  计算值与试验值对比

    Table  7.   Comparison of calculated and test results

    试件
    编号
    实测
    自振频率f1/Hz
    理论计算
    自振频率f2/Hz
    修正后
    自振频率f3/Hz
    修正值/
    实测值f3/f1
    CISS 13.63 16.52 14.87 1.09
    S3C2 8.69 9.83 8.84 1.02
    S3C3 10.04 11.53 10.38 1.03
    S5C2 7.57 8.88 7.99 1.06
    S5C3 9.13 10.52 9.46 1.04
    下载: 导出CSV

    表  8  理论计算值与实测值对比

    Table  8.   Comparison of theoretical and test results

    试件
    编号
    实测峰值加速度
    ap1/(m·s−2)
    理论计算峰值加速度
    ap2/(m·s−2)
    实测值/理论计算值
    ap1/ap2
    CISS0.850.781.09
    S3C21.231.101.12
    S3C30.980.911.08
    S5C21.421.321.08
    S5C31.121.001.12
    下载: 导出CSV
  • [1] Rijal R, Samali B, Shrestha R, et al. Experimental and analytical study on dynamic performance of timber floor modules (timber beams) [J]. Construction and Building Materials, 2016, 122: 391 − 399. doi: 10.1016/j.conbuildmat.2016.06.027
    [2] Ebadi M M, Doudak G, Smith I. Evaluation of floor vibration caused by human walking in a large glulam beam and deck floor [J]. Engineering Structures, 2019, 196: 109349.
    [3] 陈隽, 王磊, 楼佳悦, 等. 单人Bounce荷载下楼盖结构加速度反应谱设计[J]. 振动与冲击, 2015, 34(5): 14 − 19, 38.

    Chen Jun, Wang Lei, Lou Jiayue, et al. Acceleration response spectrum for predicting floor vibration due to single human bounce load [J]. Journal of Vibration and Shock, 2015, 34(5): 14 − 19, 38. (in Chinese)
    [4] 管宇, 周绪红, 卫世杰, 等. 冷弯薄壁型钢组合楼盖振动性能及静力挠度研究[J]. 工程力学, 2018, 35(5): 131 − 142.

    Guan Yu, Zhou Xuhong, Wei Shijie, et al. Study on vibration performance and static deflection of cold-formed thin-walled steel composite floors [J]. Engineering Mechanics, 2018, 35(5): 131 − 142. (in Chinese)
    [5] Chen Jun, Han Ziping, Xu Ruotian. Effects of human-induced load models on tuned mass damper in reducing floor vibration [J]. Advances in Structural Engineering, 2019, 22(11): 2449 − 2463.
    [6] 朱前坤, 李宏男, 杜永峰, 等. 不同行走步速下人行桥振动舒适度定量化评估[J]. 工程力学, 2016, 33(10): 97 − 104.

    Zhu Qiankun, Li Hongnan, Du Yongfeng, et al. Quantitative evaluation of vibration serviceability of pedestrian bridge underdifferent walking speed [J]. Engineering Mechanics, 2016, 33(10): 97 − 104. (in Chinese)
    [7] 朱前坤, 蒲兴龙, 惠晓丽, 等. 基于人群-结构耦合作用甘肃省体育馆悬挂结构振动舒适度评估及控制[J]. 工程力学, 2018, 35(增刊 1): 46 − 52. doi: 10.6052/j.issn.1000-4750.2017.06.S003

    Zhu Qiankun, Pu Xinglong, Hui Xiaoli, et al. Serviceability evaluation and control of suspension structure of gansu gymnasium based on pedestrlan-structure coupled vibration [J]. Engineering Mechanics, 2018, 35(Suppl 1): 46 − 52. (in Chinese) doi: 10.6052/j.issn.1000-4750.2017.06.S003
    [8] 陈隽, 熊杰程, 李果. 跑步荷载下大跨结构的竖向振动加速度反应谱研究[J]. 工程力学, 2017, 34(3): 173 − 181.

    Chen Jun, Xiong Jiecheng, Li Guo. Acceleration pesponse spectrum for predicting vibrations of long-span structures due to human running load [J]. Engineering Mechanics, 2017, 34(3): 173 − 181. (in Chinese)
    [9] 吴方伯, 刘彪, 罗继丰. 预应力混凝土叠合空心楼板的受剪性能试验研究[J]. 工程力学, 2016, 33(3): 196 − 203.

    Wu Fangbo, Liu Biao, Luo Jifeng. Experimental study on shear resisting properties prestressed concrete composite hollow core slabs [J]. Engineering Mechanics, 2016, 33(3): 196 − 203. (in Chinese)
    [10] Davies G, Elliott K S, Omar W. Horizontal diaphragm action in precast concrete floors [J]. The Structural Engineer, 1990, 68(2): 25 − 32.
    [11] Baran E. Effects of cast-in-place concrete topping on flexural response of precast concrete hollow-core slabs [J]. Engineering Structures, 2015, 98(9): 109 − 117.
    [12] Ren R, Naito C J. Precast concrete diaphragm connector performance database [J]. ASCE, Journal of Structural Engineers, 2013, 139(1): 15 − 27. doi: 10.1061/(ASCE)ST.1943-541X.0000598
    [13] Wan G, Zhang D H, Fleischman R B. A coupled connector element for nonlinear static pushover analysis of precast concrete diaphragms [J]. Engineering Structures, 2015, 86: 58 − 71.
    [14] Zhang D, Fleischman R B, Schoettler, et al. Precast Diaphragm Response in Half-Scale Shake Table Test ASCE [J]. Journal of Structural Engineers, 2019, 145(5): 04019024-1 − 04019024-15.
    [15] Fleischman R B, Restrepo J, Naito C J. Integrated Analytical and Experimental Research to Develop a New Seismic Design Methodology for Precast Concrete Diaphragms [J]. ASCE, Journal of Structural Engineers, 2013, 139(7): 1192 − 1204. doi: 10.1061/(ASCE)ST.1943-541X.0000734
    [16] 庞瑞, 陈桂香, 倪红梅, 等. 全干式连接预制混凝土板、楼盖及其抗震性能提升方法[P]. 中国: ZL 2015 1 0247926. 5, 2017-07-14.

    Pang Rui, Chen Guixiang, Ni Hongmei, et al. Untopped precast slab and floor diaphragm [P]. China patent: ZL 2015 1 0247926. 5, 2017-07-14. (in Chinese)
    [17] 庞瑞, 许清风, 梁书亭, 等. 分布式连接全装配RC楼盖竖向承载力与变形分析[J]. 工程力学, 2019, 36(4): 147 − 157.

    Pang Rui, Xu Qingfeng, Liang Shuting, et al. Analysis of the vertical strength and deflection of discretely connected precast RC floor systems [J]. Engineering Machanics, 2019, 36(4): 147 − 157. (in Chinese)
    [18] 朱筱俊, 庞瑞, 梁书亭. 全装配式钢筋混凝土楼盖竖向受力性能试验研究[J]. 建筑结构学报, 2013, 34(1): 123 − 130.

    Zhu Xiaojun, Pang Rui, Liang Shuting. Experimental study on vertical mechanical properties of fully assembled reinforced concrete floor [J]. Journal of Building Structures, 2013, 34(1): 123 − 130. (in Chinese)
    [19] Sun Chongfang, Liang Shuting, Zhu Xiaojun. Experimental study and comfort analysis of a new-type precast assembly floor under human-induced loads [J]. KSCE Journal of Civil Engineering, 2016, 20(7): 2868 − 2874. doi: 10.1007/s12205-016-0617-z
    [20] GB50010−2010, 混凝土结构设计规范 [S]. 北京: 中国建筑工业出版社, 2011.

    GB50010−2010, Concrete structure design specification [S]. Beijing: China Building Industry Press, 2011. (in Chinese)
    [21] Liu Fangzhou, Battin J M, Pacoste C, et al. Experimental and numerical dynamic analyses of hollow core concrete floors [J]. Structures, 2017(12): 286 − 297.
    [22] Casagrande D, Giongo I, Pederzolli F, et al. Analytical, numerical and experimental assessment of vibration performance in timber floors [J]. Engineering Structures, 2018, 168: 748 − 758. doi: 10.1016/j.engstruct.2018.05.020
    [23] 陆春华, 金伟良, 宋志刚. 基于振动舒适度要求的混凝土楼板自振频率分析[J]. 建筑科学, 2010, 26(7): 43 − 46. doi: 10.3969/j.issn.1002-8528.2010.07.011

    Lu Chunhua, Jin Weiliang, Song Zhigang. Study on natural frequency of concrete floor based on vibration serviceability [J]. Building Science, 2010, 26(7): 43 − 46. (in Chinese) doi: 10.3969/j.issn.1002-8528.2010.07.011
    [24] 严世鑫, 陈隽, 叶艇. 大跨楼盖振动舒适度分析中阻尼比取值讨论[J]. 建筑结构, 2014, 9(增刊 44): 460 − 464.

    Yan Shixin, Chen Jun, Ye Ting. Values of damping ration in long-span floor vibration serviceability assessment [J]. Building structure, 2014, 9(Suppl 44): 460 − 464. (in Chinese)
    [25] 逯静洲, Sim S H, Jr B F S. 基于随机减量法的分布式结构模态参数识别[J]. 振动与冲击, 2017, 36(17): 48 − 54.

    Lu Jingzhou, Sim S H, Jr B F S. Modal parametric identification of distribution type structures based on random decrement technique [J]. Journal of Vibration and Shock, 2017, 36(17): 48 − 54. (in Chinese)
    [26] 金忠谋. 材料力学[M]. 北京: 机械工业出版社, 2005: 191 − 193.

    Jin Zhongmou. Material mechanics [M]. Beijing: Mechanical Industry Press, 2005: 191 − 193. (in Chinese)
    [27] European Committee for Standardization. General rules and rules for buildings: EN 1995−1-1: 2004 [S]. Brussels: European Committee for Standardization, 2004.
    [28] 杜浩, 胡夏闽, 王汉成, 等. 胶合木-混凝土组合楼盖人行荷载激励下振动舒适度研究[J]. 建筑结构学报, 2020, 41(1): 140 − 148.

    Du Hao, Hu Xiamin, Wang Hancheng, et al. Vibration serviceability of glulam-concrete composite floor under pedestrian excitation [J]. Journal of Building Structures, 2020, 41(1): 140 − 148. (in Chinese)
    [29] 陈隽, 王玲, 陈博, 等. 跳跃荷载动力特性与荷载模型实验研[J]. 振动工程学报, 2014, 27(1): 16 − 24. doi: 10.3969/j.issn.1004-4523.2014.01.003

    Chen Jun, Wang Ling, Chen Bo, el al. Experimental study on dynamic characteristics and load model of jump loads [J]. Journal of Vibration Engineering, 2014, 27(1): 16 − 24. (in Chinese) doi: 10.3969/j.issn.1004-4523.2014.01.003
  • 加载中
图(14) / 表(8)
计量
  • 文章访问数:  216
  • HTML全文浏览量:  42
  • PDF下载量:  55
  • 被引次数: 0
出版历程
  • 收稿日期:  2020-03-27
  • 修回日期:  2020-06-28
  • 刊出日期:  2020-11-25

目录

    /

    返回文章
    返回