Numerical and experimental evaluation of concrete cracking in timber concrete composite bridge beams

机译：木材-混凝土组合桥梁混凝土开裂的数值与试验评价。

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TCC bridges are a more durable alternative to the very high number of conventional timber bridgesen Chile´s road network. In a research project, numerical analyses and laboratory tests wereconducted in order to obtain the influence of concrete cracking in TCC beams. The results from theFEM simulations and from the shear tests indicate that the influence of the concrete cracking is notlimited to a stiffness reduction of the concrete slab, but it the stiffness of the shear connectors isreduced, too. No other parameter was found to significantly improve the correlation betweensimulations and real tests. Laboratory tests validate that small concrete cracks can cause significantconnector stiffness reductions. Good correlations on the safe side between numeric simulation andtest results is obtained, if the connectors’ slip modulus is reduced by 60%, in addition to thetheoretic concrete cracking.

机译：TCC桥梁是智利传统公路桥梁数量众多的传统木材桥梁的更耐用替代品。在一个研究项目中，进行了数值分析和室内试验，以便获得混凝土开裂对TCC梁的影响。有限元模拟和剪切试验的结果表明，混凝土开裂的影响不仅限于混凝土板的刚度降低，而且剪切接头的刚度也降低了。没有其他参数可以显着改善模拟与真实测试之间的相关性。实验室测试证实，混凝土小裂缝会导致连接器刚度大大降低。如果将连接器的滑模量降低了60％，则理论上的混凝土开裂也将在数值模拟和测试结果之间的安全方面获得良好的相关性。

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来源
《International Association for Bridge and Structural Engineering;IABSE Symposium on Engineering for Progress, Nature and People》|2014年|153-160|共8页
会议地点 Madrid(ES)
作者
Frank SCHANACK; Óscar Ramón RAMOS; Juan Patricio REYES; Andrés Alvarado;
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作者单位

Universidad AustralValdivia ChileFrank.schanack@uach.cl;

University of CantabriaSantander SpainOramos@apiaxxi.cl;

SECPLANPanguipulli ChileJuan.reyes@munipangui.cl;

Universidad AustralValdivia ChileAndres.alvarado.low@gmail.com;

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关键词
composites; ; concrete; ; timber; ; bridges; ; testing; ; computational methods; ; serviceability;

机译：复合材料;具体; ;木材; ;桥梁;测试； ;计算方法； ;可维修性;

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专利

1. A contribution to understanding the influence of concrete cracking on timber concrete composite bridge beams [J] . Schanack Frank, Ramon Ramos Oscar, Osman Juan Pablo, Bautechnik . 2015,第2期

机译：有助于理解混凝土开裂对木材混凝土组合桥梁的影响
2. Analytical, experimental and numerical study of timber-concrete composite beams for bridges [J] . Molina Julio C., Calil Junior Carlito, de Oliveira Diego R., Computers & Concrete . 2019,第2期

机译：桥梁木混凝土复合梁的分析，实验和数值研究
3. Experimental study on the influence of concrete cracking on timber concrete composite beams [J] . Frank Schanack, Oscar Ramon Ramos, Juan Patricio Reyes, Engineering Structures . 2015,第feba1期

机译：混凝土开裂对木材混凝土组合梁影响的试验研究
4. Numerical and experimental evaluation of concrete cracking in timber concrete composite bridge beams [C] . Frank SCHANACK, óscar Ramón RAMOS, Juan Patricio REYES, IABSE Symposium on Engineering for Progress, Nature and People . 2014

机译：木材混凝土复合桥梁混凝土裂缝的数值和实验评价
5. Creation of Cracks of Known Sizes in Reinforced Concrete Beams and Performance Evaluation of Silane in Concrete Bridge Decks [D] . Aqib, Syed Muhammad. 2020

机译：混凝土桥甲板中钢筋混凝土梁和硅烷性能评价的创建裂缝
6. Experimental and numerical evaluations of composite concrete-to-concrete interfacial shear strength under horizontal and normal stresses [O] . M. Yahya Al-Fasih, M. E. Mohamad, I. S. Ibrahim, 2021

机译：水平和正常应力下复合混凝土界面剪切强度的实验性和数值评价
7. Long-term behavior of timber-concrete composite beams. II: Numerical analysis and simplified evaluation [O] . Fragiacomo, M. 2006

机译：木材-混凝土组合梁的长期性能。二：数值分析与简化评估

Numerical and experimental evaluation of concrete cracking in timber concrete composite bridge beams

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