three-centered arch

A general program using APDL ( ANSYS parametric design language), which is applicable to arbitrary lining sections of the three-centered circular arch with different surrounding rock pressure distributions, was developed for the calculation of the tunnel inner forces and eccentricities.

利用ANSYS的参数化高级设计语言，编制了适合任意三心圆拱衬砌断面和不同围岩压力分布形式的隧道衬砌内力和偏心距的通用计算程序。

A fornltila for calculating the heading section of arbitrary three-centered arch and circular arch types was derived in this paper.

文中推导出了任意三心拱和圆弧拱巷道断面积计算的公式。

This papaer presents a new structure, which is compound large span structures of Γ frame parabolical three hinged arch space truss.

提出一种新型屋架结构&Γ型柱抛物线三铰拱空间桁架组合大跨结构，导出了该结构有关的设计计算公式。

This paper presents a plan of fhe structure, which is compound Larg-span structures of Γ farme parabolical three hinged arch space-truss.

本文介绍的结构方案是：Γ型柱抛物线三铰拱空间桁架组合大跨结构，按固体力学力学分析的方法，导出了杆件的内力计算公式。

METHODS: Three-dimensional face bow was designed to measure the projection of zygoma, the eyes, and width of the face. Then it was used for 5 patients with comminuted or delayed zygomatic and arch fractures to evaluate the clinical effects.

方法：设计并制作可用于测量颧骨突度、面侧方宽度以及眼球突度的三维定位面弓，用于颧骨颧弓粉碎性骨折和陈旧性颧骨骨折共5例，评价其临床应用效果。

Three typical aerodynamic flow field found in double-arch flame furnaces are experimentally studied by means of the Thring Newby modelling method.

本实验利用Thring-Newby模化方法对三种典型的W型火焰锅炉炉膛的空气动力场进行了分析研究。

This paper introduces a diagram method for three-hinged arch influential line of monents and completely proves it.

介绍了三铰拱弯矩影响线的一种图解方法，并给出了证明。