水泥砂浆加固RG梁的冲击性能模拟分析

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振动与冲击 ›› 2017, Vol. 36 ›› Issue (6) : 63-74.

论文

水泥砂浆加固RG梁的冲击性能模拟分析

廖维张1 李淼1 王波1 张伟2 田志敏3

作者信息 +

Numerical simulation of impact behavior of RC beams strengthened with high strength steel wire mesh and polymer mortar

LIAO Weizhang1,LI Miao1,2,WANG Bo1,ZHANG Wei3,TIAN Zhimin4

Author information +

文章历史 +

摘要

为研究高强钢绞线网-聚合物砂浆加固钢筋混凝土梁的抗冲击性能，在3根未加固梁和4根加固梁的落锤冲击试验的基础上，采用显式有限元分析软件ANSYS/LS-DYNA，建立了包括混凝土梁、冲击锤头在内的有限元模型，对在冲击荷载作用下加固前、后混凝土梁的抗冲击性能进行了数值分析。之后，对采用不同直径钢绞线和不同厚度聚合物砂浆加固层的钢筋混凝土加固梁进行了参数分析。研究结果表明：高强钢绞线网-聚合物砂浆加固能显著提高钢筋混凝土梁的抗冲击性能；合理增加砂浆加固层厚度有利于改善梁身裂缝和破坏模式；选用恰当直径的钢绞线加固钢筋混凝土梁有助于钢绞线承载能力的发挥；工程实际中，需合理考虑砂浆层厚度和钢绞线直径对加固效果的影响。

Abstract

To evaluate the impact resistant performance of reinforced concrete (RC) beams strengthened with the High Strength Steel Wire Mesh and Polymer Mortar (HSSWM-PM),on the basis of experiments on three un-retrofitted RC beams and four retrofitted RC beams in drop-weight impact tests,a finite element model was established by using ANSYS/LS-DYNA code to simulate and predict the impact resistant behavior of RC beams specimens.Then the process parameters of reinforcement,such as the diameter of steel wire and mortar layer thickness of cement mortar were studied.The results show that the impact resistance performance of RC beams retrofitted with HSSWM-PM is greatly improved; The thickness of cement mortar and the diameter of steel wire have obvious advantages on the improvement of impact resistance performance,and increasing the thickness of mortar layer and diameter of steel wire appropriately is beneficial to alleviate cracks on beam and change the failure mode.It is essential to consider the effect of the thickness of mortar layer and the diameter of steel wire on the impact resistant behavior properly in practical engineering.

导出引用

廖维张1 李淼1 王波1 张伟2 田志敏3. 水泥砂浆加固RG梁的冲击性能模拟分析[J]. 振动与冲击, 2017, 36(6): 63-74

LIAO Weizhang1,LI Miao1,2,WANG Bo1,ZHANG Wei3,TIAN Zhimin4. Numerical simulation of impact behavior of RC beams strengthened with high strength steel wire mesh and polymer mortar[J]. Journal of Vibration and Shock, 2017, 36(6): 63-74

参考文献

[1] 聂建国，王寒冰，张天申，等.高强不锈钢绞线网-渗透性聚合砂浆抗弯加固的试验研究[J].建筑结构学报, 2005, 26(2): 1-9. (NIE Jianguo，WANG Hanbing, ZHANG Tianshen, et al. Experimental study on flexural behavior of RC beams strengthened with stainless steel wire mesh and permeability polymer mortar [J]. Journal of Building Structures, 2005, 26(2): 1-9. (in Chinese))
[2] Kaish A, Jamil M, Raman S N, et al. Axial behavior of ferrocement confined cylindrical concrete specimens with different sizes [J]. Construction and Building Materials, 2015, 78: 50-59.
[3] 黄华.高强钢绞线网—聚合物砂浆加固钢筋混凝土梁式桥试验研究与机理分析[D].西安:长安大学,2008. (Huang Hua. Experimental Study and Theoretical Analysis on Strengthening RC Girder Bridge with Steel Wire Mesh and Polymer Mortar [D].Xi’an: Chang' an University,2008. (in Chinese))
[4] 丁建为.钢丝绳网片端部锚固试验研究[D]. 沈阳:沈阳建筑大学.2013. (Ding Jianwei. Study on Experiment of the Wire Rope Net Bottom Anchoring[D].Shenyang: Shenyang Jianzhu University,2013. (in Chinese))
[5] 金成勋,金成秀,刘成权,金明冠.渗透性聚合砂浆(RC-A0401)的性能分析[R].韩国汉城产业大学,2001.
[6] 金成勋.不锈钢丝网抗拉强度试验结果[R]. 韩国汉城产业大学建设技术研究所,2000.
[7] 韩继云,李浩军.钢绞线网-聚合物砂浆加固技术及工程应用[J].工程质量,2006,(5):20-23.
[8] Huang X,Birman V,Nanni A.Tunis G. Properties and potential for application of steel reinforced polymer and steel reinforced grout composites. Composites Part B：Engineering,2005,36(1):73-82．
[9] 黄华,邢国华,刘伯权,刘彦顺, 李铁强等. 高强不锈钢绞线网－渗透性聚合砂浆加固梁抗弯承载力试验研究[J].工业建筑.2007,37(3):106-110. (Huang Hua, Xing Guohua, Liu Boquan, et al. Experimental study on flexural capacity of RC beams strengthened with stainless steel wire mesh and permeability Polymer mortar [J]. Industrial Construction, 2007,37(3):106-110. (in Chinese))
[10] 邢国华,付国,刘伯权. 钢绞线(丝)网-聚合砂浆加固钢筋混凝土梁受弯性能研究[J]. 工程力学,2013,30(1):359-364. (XING Guohua, FU Guo , LIU Boquan. Study on flexural behavior of reinforced concrete beam strengthened with steel wire mesh and polymer mortar [J]. Engineering mechanics, 2013, 30(1):359-364. (in Chinese))
[11] 胡舒新. 高强不锈钢绞线网用于混凝土抗弯疲劳性能的试验研究[D]. 北京:清华大学,2004.(Hu Shuxin. Experimental Study on Bending Fatigue Behavior of RC Beams Strengthened by Stainless Steel Wires [D]. Beijing: Tsinghua University, 2004. (in Chinese))
[12] 黄华,刘伯权,吴涛. 高强钢绞线网-聚合物砂浆抗剪加固梁刚度及裂缝分析[J]. 土木工程学报,2011,44(3):32-38. (Huang Hua, Liu Boquan,Wu Tao. Analyses of stiffness and cracks of shear strengthened beam with stainless steel wire mesh and polymer mortar [J]. China Civil Engineering Journal, 2011, 44(3):32-38. (in Chinese))
[13] 郭俊平，邓宗才等. 预应力钢绞线网加固钢筋混凝土柱抗震性能试验研究[J].建筑结构学报. 2014,35(2):128-136. (GUO Junping，DENG Zongcai, et al. Experimental study strengthened on seismic behavior with steel prestressed high of RC columns strength wire mesh [J]. Journal Of Building Structures, 2014,35(2):128-136. (in Chinese))
[14] 田轲.加筋高性能砂浆(HPFL)加固RC柱抗震性能数值分析[D]. 西安:长安大学,2013. (Tian Ke. Numerical analysis of seismic performance on RC columns strengthened with high performance fibrocement laminate (HPFL) [D].Xi’an: Chang' an University, 2013. (in Chinese))
[15] 崔俊. 预应力钢丝绳加固RC框架节点抗震性能试验研究[D]. 泉州:华侨大学,2013. (Cui Jun. Experimental study on seismic behavior of RC frame joint strengthened by pre-stressed closed wire rope units [D].Quanzhou: Huaqiao University, 2013. (in Chinese))
[16] 刘琛. 砖砌体结构抗震加固模拟地震振动台试验研究[D].哈尔滨: 中国地震局工程力学研究所,2013. (Liu Chen. Shaking Table Experimental Study on Seismic Strengthened Brick Masonry Structures [D]. Harbin: Institute of Engineering Mechanics, China Earthquake Administration, 2013. (in Chinese))
[17] 张蔚,李爱群,姚秋来等. 高强钢绞线网-聚合物砂浆抗震加固既有建筑砖墙体试验研究[J].建筑结构学报.2009,30(4):55-60. (ZHANG Wei, LI Aiqun, YAO Qiulai, et al. Experimental study on existing brick walls strengthened with high-strength steel wire mesh and polymer mortar [J]. Journal Of Building Structures, 2009,30(4):55-60. (in Chinese))
[18] M. Zineddin, T. Krauthammer, Dynamic response and behavior of reinforced concrete slabs under impact loading [J]. International Journal of Impact Engineering 34 (2007) :1517–1534.
[19] 王亚勇,姚秋来,巩正光等.高强钢绞线网-聚合物砂浆在郑成功纪念馆加固工程中的应用[J]. 建筑结构,2005,35(8):40-43. (Wang Yayong, Yao Qiulai, Gong Zhengguang, et al. Application of Strengthened Technology by Composite Cover Combined with High Strength Wire Cable Mesh and Polymeric Mortar in Zheng Chenggong Memorial Strengthening Engineering [J]. Building Structures, 2005,35(8):40-43. (in Chinese))
[20] 姚秋来,王忠海,王亚勇等.厦门中山南音宫结构加固改造工程设计[J]. 工程抗震与加固改造,2007,29(4):89-92,104. (Yao Qiu-lai, Wang Zhong-hai, Wang Ya-yong, et al. Strengthening and Retrofitting Engineering Design for Zhongshan Nanyang Structure in Xiamen[J]. Earthquake Resistant Engineering and Retrofitting, 2007,29(4):89-92,104. (in Chinese))
[21] 姚秋来,王亚勇,盛平,等.高强钢绞线网-聚合物砂浆复合面层加固技术应用——北京工人体育馆改建工程[J].工程质量,2007,3(B):46-50.
[22] 廖维张,张伟,田志敏.高强钢绞线网-高性能砂浆加固钢筋混凝土梁抗冲击性能试验研究[J].振动与冲击,2014,33(12):200-206. (Liao Weizhang, Zhang Wei, Tian Zhimin. Test for impact resistance properties of RC beams strengthened with high strength steel wire mesh and high performance mortar [J]. Journal of Vibration and Shock, 2014,33(12):200-206. (in Chinese))
[23] 孟一. 冲击荷载作用下钢筋混凝土梁的试验及数值模拟研究[D]. 长沙：湖南大学,2012. (Meng Yi. Experiment and numerical simulation study on reinforced concrete beam under impact loading [D]. Changsha: Hunan University, 2012. (in Chinese))
[24] U.S. Department of Transportation, Federal Highway Administration. Users Manual for LS-DYNA Concrete Material Model 159. Publication NO. FHWA-HRT-05-062, May, 2007.
[25] Wu J, Liu X, Chew S H. Parametric study on cement-based soft-hard-soft (SHS) multi-layer composite pavement against blast load[J]. Construction and Building Materials, 2015, 98: 602-619.
[26] 杜修力,廖维张. 高强钢绞线网-聚合物砂浆加固钢筋混凝土板的抗爆性能数值分析[J].防灾减灾工程学报,2010,6:595-600 (DU Xiuli, Liao Weizhang. Study on Blast Resistant Performance of Reinforced Concrete Plate Strengthened with High-strength Steel Wire Mesh and Polymer Mortar under Blast Loading [J]. Journal of Disaster Prevention and Mitigation Engineering, 2010, 6:595-600. (in Chinese)