地下厂房岩锚吊车梁长锚杆作用机制研究及数值模拟分析

doi:10.13722/j.cnki.jrme.2016.0201

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Abstract The inclined long bolts for the crane beam being anchored in rock in the underground powerhouse are the important links of force transmission between the beam body and rock. A single bolt is divided into two parts: one section is surrounded by rock and another section is surrounded by the concrete of beam body. Based on the force characteristics of the bolt under the pullout load and the neutral point theory for bolts，the interactions of bolt，beam body and surrounding rock under the self-weight of beam，rock excavation load and the crane wheel were studied. A mechanical model of anchorage body including the asphalt was established. A new algorithm to calculate the forces of bolts was proposed，which is suitable for the stability analysis of crane beam anchored in rock. The numerical simulation on the force of crane beam anchored in rock during the construction and running periods was carried out with the 3D elasto-plastic nonlinear finite element method. The results of numerical simulation can reasonably reflect the stress characteristics of long bolts，and the calculated stresses in the bolts are in good agreement with the monitored values.

Key words： underground engineering crane beam anchored in rock long bolts bolt pull-out action neutral point theory bolts daubed asphalt

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	Articles by authors
	ZHOU Hao1
	2
	XIAO Ming1
	2
	CHEN Juntao1
	2
	LIU Guoqing1
	2

Cite this article:

ZHOU Hao1,2,XIAO Ming1, et al. Numerical simulation of long bolts for crane beam anchored in rock in underground powerhouse[J]. , 2016, 35(12): 2439-2451.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2016.0201 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/I12/2439

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