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Numerical investigations on grouted segment joints for UHPC-structures

机译:UHPC结构灌浆节理的数值研究

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In the last years, enormous developments in the field of concrete technology provide the basis for new concrete structures and innovative construction methods. In this content, segmental constructions and framework structures made of ultra-high performance concrete enable fast and high-quality construction processes. A promising joint design, especially for tolerance equalisation, is the segment joint grouted with high-performance mortar. In order to evaluate the load bearing capacity of these joints, experimental investigations by means of slant shear tests were carried out with various surface characteristics of the interfaces and mortar thicknesses at iBMB, Division of Concrete Construction of the TU Braunschweig. This paper focuses on the simulation of grouted segment joints using finite element analyses. A numerical model is presented and validated by the experimental results of the slant shear tests.
机译:近年来,混凝土技术领域的巨大发展为新型混凝土结构和创新的施工方法奠定了基础。在此内容中,由超高性能混凝土制成的分段结构和框架结构可实现快速,高质量的施工过程。分段接头用高性能砂浆灌浆是一种很有前景的接头设计,尤其是用于公差平衡。为了评估这些接缝的承载能力,在不伦瑞克工业大学混凝土建设部的iBMB上,通过斜切试验对界面的各种表面特性和灰浆厚度进行了实验研究。本文着重于使用有限元分析模拟灌浆节理。提出了一个数值模型,并通过斜切试验的实验结果进行了验证。

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