查询词典 arch brace

Based on the construction of Danxi Bridge in Yiwu,this paper introduces the construction technology for installing main arch ring and sideling arch ring of leaned tied arch bridge.

以义乌丹溪大桥为背景，全面介绍了国内首座斜靠式系杆拱桥主、斜拱圈安装施工技术。

The rigidity of concrete structure below the roof、abutment rigidity of arch foot and sunshine radiation are analyzed as factors of temperature action in roof structure. It shows that the rigidity of concrete structure has little effect on temperature action, but the rigidity of arch foot affects temperature action more and is the determinant that assures the arch mechanic behavior .The analysis result also shows sunshine radiation should not be neglected.

本文分析了下部混凝土结构刚度、拱脚支座刚度和日照温差对屋盖结构温度效应的影响，分析表明，下部混凝土结构刚度对其影响不大；温度应力较大杆件受拱脚支座刚度影响较大且拱脚刚度的大小是保证拱结构受力特性的决定因素；日照温差影响不能忽视。

Arch dam, which is fastened to the base rock, is a high_order, hyperstatic, spacial body case structure. It has not only arch function but also girder function, but its main loads are passed to each dam abutment by means of arch function.

拱坝是固结于基岩的高次超静定空间壳体结构，既有拱作用又有梁作用，其主要荷载是通过拱的作用传到两岸坝端。

Arch dam, which is fastened to the base rock, is a high_order, hyperstatic, spacial body case structure. It has not only arch function but also girder function, but its main loads are passed to each dam abutment by means of arch function.

拱坝是固结于基岩的高次超静定空间壳体结构，既有拱作用又有梁作用，其主要荷载是通过拱的作用传到两岸坝肩。

Brick arch brick arch lintel lintel arches and arcs into flat arch.

1，砖拱过梁砖拱过梁分为平拱和弧拱。

This paper combines the actual engineering example, analyzing the reasons that the ground brick rising the arch ,(ACI209R-82) the calculation formula that provide is make use of,estimating the concrete value of the dry constringency,estimating the height that ground brick rising the arch ,for avoid the ground brick rising the arch reasonable methods for provide.

结合具体的工程实例，分析了地砖拱起的原因，利用AC I209.R-82混凝土干燥收缩值计算公式，估算了该工程混凝土板的干燥收缩值和地砖拱起高度，提出了预防和处理地砖拱起的方法。

The error of ultimate load prediction of un-reinforced brick arch: brick arch will be simplified to portal frame are used to preliminary estimation, in-plane stiffness which only provides from vertical frame, the average error between -20~20%;Structure program are used to simulate brick arch with shell elements analyzed, the average error between -15%~10%.

未补强砖拱，其水平极限荷载预测之误差：推估公式中将砖拱简化为门形构架，其面内刚由垂直构材提供，平均误差在-20~20%之间；结构分析程式中将砖拱以壳元素模拟，平均误差在-15~10%之间。

Brick arch failure mode:Cracks are separated into shear and flexural cracks, the shear and flexural crack of un-reinforced brick arch occur in arch angle 63o respectively and at the bottom of 3rd brick walls on both sides of opening.

砖拱破坏模式：缝大致上可分为剪缝与挠曲缝；未补强砖拱斜向剪缝发生处为拱心角约63o 处，挠曲水平缝发生於开口侧底部三皮砖位置。

Using the method, studies reveal that the stability of arch dam against buckling is generally governed by the top arch ring and the cantilever is more steady than the horizontal arch.

利用该法研究表明：坝体结构失稳的控制拱圈一般在拱顶，悬臂梁的稳定性高于水平拱圈。

As a compress-bend structure, with increasing of the span, length slender ratio and carrying load of arch increase, lateral rigidity and width span ratio of arch ring minish relatively. During construction and service stages, lateral stability becomes more important and a control factor of arch bridge design.

拱肋作为压弯结构，随着跨径的增大，杆件的长细比及所承受的荷载也随之增大，拱圈横向刚度、宽跨比相对减小，在施工阶段及使用阶段横向稳定问题特别突出，常常成为拱桥设计的控制因素。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。