主拱圈

拱上建筑加载顺序对主拱圈的影响

Influence of Loading Sequence on Main Arch Ring in Spandrel Construction

上承式钢筋混凝土桁架拱桥主拱圈拆除方案

Demolishing scheme of main arch ring in deck-type reinforced concrete trussed arch bridge

本文研究的RC&石砌体组合拱桥是一种新的桥梁形式，它以RC拱肋作为先期的跨越结构和后期石砌体砌筑的施工支架，最终由石砌体和RC拱肋共同形成主拱圈。

This paper studies a new type of bridge & RC-masonry combination arch bridge . It makes RC arch ribs as former spanning structure and falsework of masonry 's construction .

它提出了以RC拱肋作为先期的跨越结构和后期高强石砌体砌筑的施工支架，最终由石砌体和RC拱肋共同形成主拱圈的构思。

RC-masonry combination arch bridge makes RC arch ribs as former spanning structure and falsework of upper masonry 's construction . Finally , reinforced concrete and masonry together form arch ring .

采用支架施工的大跨钢筋砼（RC）拱桥施工中的关键技术问题主要包括主拱圈高度与浇筑的时间确定、主拱圈分段长度与浇筑程序的确定、主拱圈落架方案的拟定。

The key technical problems in construction of long span reinforced concrete arch bridge with scaffold include : layer 's height of main arch , time of pouring concrete , subsection 's length of main arch , procedures of pouring and decentering of main arch etc.

最后利用JC法计算截面可靠指标，根据荷载增量法寻找主要失效模式并计算主拱圈体系失效概率。

At last , based on JC method , the reliability of cross sections can be calculated , and based on incremental load to research the main fail model , the arch system fail probability is obtained .

RVE是通过分别考虑石砌块和砂浆的材料特性和相互作用建立起来的力学模型，根据简化的力学模型计算出主拱圈的弹性模量。

RVE is a mechanic model through individually considering material characteristics and interaction of stone block and mortar , and calculate RVE 's equivalent Young 's modulus according to simplified mechanic model .

跨线刚拱桥主拱圈施工方案优化设计

Optimum Design of a Rigidity Over line Arch Bridge Main Circle Construction Project

空腹拱式渡槽主拱圈轴线的优化设计

Optimal Design of Axis of Main Arch Ring for Open Spandrel Arch Aqueduct

拱桥大高差主拱圈挠度监测数据预处理

Preprocessing of Monitoring Deflection Data on the Main Arch Ring with High Differential Elevation

基于复合主拱圈加固拱桥技术中锚固系统最佳参数组合探讨

Discussion on Optimal Parameters Combination of Arching System Based on Composite Main Arch Circle Method

证明了本桥主拱圈浇筑采取贝雷钢桁钢架是安全可行的。

It is safe and feasible to concrete the main arch-circle by steel arch truss .

钢筋混凝土箱形拱主拱圈施工方法介绍及分析

Introduction and Analysis of Construction Method for Main Arch Ring of Reinforced Concrete Box Arch

高速公路跨线刚拱桥的主拱圈施工中，一般采用支架现浇施工。

Bracket moulding method is adopted popularly while rigidity over line arch bridge main circle construction is proceeding .

复合主拱圈加固石拱桥的承载力计算模式研究

Study on computing model for the bearing capacity of the stone arch bridge strengthened by composite main arch circle method

万县长江大桥主拱圈混凝土浇筑路径变化的稳定性分析

Stability Analysis for Arch Ring of Long Span Arch of Wanxian Yangtze Bridge on the Adjustments of its Concreting Program

考虑拱式拱上结构与主拱圈联合作用影响的连拱计算

Calculation of Multi-Arch Bridges with Consideration of the Combined Action of the Arch Shape Spandrel Structure with the Main Arch Rib

主拱圈施工完毕，达到设计强度后，设计制作了丁纶帆布砂袋进行卸载落架。

After construction of the main arch , and reaching the designed strength , sandbags made of canvas were used to unload .

另外，长期超载运营造成的主拱圈病害，严重的已经影响到桥梁的正常使用。

In addition , long-term overloaded operation of the main arch ring diseases caused by , serious have affected the normal use of Bridges .

分析结果表明，在主拱圈砌筑的各个节段，钢拱架的应力均满足强度要求。

The analysis results indicate that the stress of steel arch centering satisfies the requirements of strength during different stages of casting main arch ring .

使用全自动数据采集设备和处理系统，对每一工况下的支架、拱圈应力进行适时监控，确保了施工过程中支架和主拱圈的安全。

Timely monitor of their stress in each working conditions can ensure the safe of support and main arch circle with full-automatic data acquisition system .

拱挢主拱圈轴线的合理选择是拱挢理论和设计中的重要问题之一。

The rational choice of the main arch axis of an arch bridge is one of the important problems in the theory and the design of arch bridges .

针对拱桥主拱圈的加固方法进行了综述，以实例说明了拱桥主拱圈加固的技术方案，介绍了如何具体施工的过程。

The article introduces the reinforcement method of the main arch ring of arch bridge , presents the technical scheme of reinforcement and expounds the concrete construction method .

空腹式拱桥是指主拱圈和主梁之间用立柱支撑，在主拱圈以上设有腹拱的拱桥。

Empty arch bridge is the arch bridge that uses sign pillar to prop up between the main arch and main beam , and has inner-arch on the main arch .

经过加固处理，主拱圈的强度刚度都能满足设计要求，墩台也能能够满足应力和稳定性的要求。

After reinforcement , the strength of the main arch ring stiffness can meet the design requirements , Piers can also be able to meet the stress and stability requirements .

阐述了混凝土拱桥采用分环分段现浇工艺、合龙技术及主拱圈施工过程中的线形控制技术。

The thesis specified the cast-in-site technique in sections and loops of concrete arch bridge , the technology of connecting and the technology of linearity control during construction of main arch .

为了准确、快捷的确定最不利荷载工况，利用静力法绘制了旧桥主拱圈各控制截面的弯矩影响面；

In order to decide the most unfavorable load case accurately and quickly , using static analysis method this paper draws out the influence surface of bend moment for main section ;

有限元的应用，充分考虑了材料的老化、主拱圈变形等因素，为桥梁结构加固提供科学的设计指导。

Referencing deformation of the main arch ring and going of the steel concrete material , the finite element method can supply correct guide for the reinforcement of the bridge structure reinforcement .

本文借助于动态时程分析方法，对主拱圈及全桥模型在两种地震波作用下的地震反应给予了对比分析。

Through the dynamic time-history analysis method , the analysis of the earthquake response of the main arch ring and the full bridge model is given in the action of two kinds of seismic waves .

在上述方法的基础上，我们在大跨度钢筋混凝土拱桥主拱圈的施工中采用了贝雷钢桁拱架施工的新方法。

On the base of the above methods , we use new method named " steel truss arch technology " in the construction of the main arch rib in the large-span reinforced concrete arch bridge .