The paper briefly introduces the unloading arch theory.
文章简要介绍了卸荷拱理论。
On this condition, the paper introduces the unloading arch theory.
在此基础上，论述了卸荷拱理论。
The stability of the underhand drift cemented filling body is analyzed by using stress arch theory and beam theory, and a simple judgment formula of the stability is obtained.
将压力拱理论与简支梁理论相结合分析了下向进路胶结充填体的稳定性，给出了充填体稳定性的简易判定公式；
This paper discussed the transfer matrix theory of vibration analysis of long-span arch bridge.
本文探讨大跨度拱桥振动分析传递矩阵法理论。
Basic theory of nonlinear FEM analysis and its realization in ANSYS were studied. Accomplish stability analysis of high arch dam abutment based on nonlinear FEM analysis.
因此对大型结构分析软件ANSYS的三维非线性计算功能进行了深入研究，在此基础上完成了基于非线性有限单元法的高拱坝坝肩稳定计算分析。
The stress analytic method of arch dam covers pure arch method, arch beam sharing method, finite element method, calculating method of shell theory and structural model test method.
拱坝的应力分析方法包括纯拱法、拱梁分载法、有限元法、壳体理论计算方法和结构模型试验法。
The theory of arch dam design adopted at present can't illustrate the state of stress of the thin arch dam beyond the scope of elasticity.
当前采用的拱坝设计理论不能对薄拱坝超出弹性范围的应力状态进行恰当地描述。
Through analysis on theory, the author finds the basic regularity in transmitting the supporting force by the arch supporting force of tunnel with circular arch section.
通过细致的理论分析，笔者初步找出了圆拱状断面隧道拱壁支承力传递的基本规律。
This paper analyses force of arch structure in terms of theory, points out constructional Limitations of arch structure applying prefabricated component. It provides basis for guiding construction.
从理论上对拱上结构进行受力分析，得出拱上结构采用预制混凝土块浆砌施工有一定局限性的结论，并以此为依据指导施工。
The theory and construction method to deal with and protect the tunnel collapse in arch are studied.
进一步研究了处理和防治塌拱的施工措施和原理。
Based on the theory of rock mechanics and the principle of drifting, the author proposed the suspension arch method of drifting in unstable strata.
本文在总结先拱后墙平巷掘进经验的基础上，根据岩石力学理论和平巷掘进原理，提出了平巷掘进的悬拱法。
Education production is a super-complex process. The re se arch on school efficiency needs not only the theory, but also the empirical techniques.
教育生产是一个极其复杂的过程，对于学校效率问题研究既需要理论基础，又需要实证的技术。
According to linear request of the entire bridge main arch rib, use fuzzy theory and the ANFIS inference system forecast that various stages raise in advance.
根据全桥主拱肋线形要求，利用模糊理论及ANFIS推理系统预测各节段的预抬高值。
This paper analyses force of arch structure in terms of theory, points out constructional Limitations of arch structure applying prefabricated component.
从理论上对拱上结构进行受力分析，得出拱上结构采用预制混凝土块浆砌施工有一定局限性的结论，并以此为依据指导施。
Secondly, it discussed the deflection in stability of arch bridge and geometry nonlinear theory on ultimate load-carrying ability.
其次，论述了关于拱桥稳定性的挠度问题和极限承载力的几何非线性理论。
Based on first-order optimization calculating theory, authors established the optimal finite element model of swivel construction of arch bridge adopting hydraulic sync elevation technology.
根据一阶最优化计算理论，构建了采用液压同步提升技术进行转体施工拱桥的优化有限元模型。
The result of forecasting is consistent with the fact one. The applicability of block theory in overbreak of doubled arch tunnel is tested.
通过预测得出的结果证实了块体理论在高速公路连拱隧道超挖预测中的适用性。
This paper presents the analysis of stress, characteristic of skew arch bridges by comparing with the data derived from theory computation, model test and practical bridge test.
本文通过理论计算、模型试验和实桥试验数据的对比，对圆弧形斜拱桥受力特性进行了分析研究。
According to the theory for stability of motion, the failure of arch dam along the base is regarded as the problem of stability at extreme state of motion.
本文从运动稳定性的理论出发，认为拱坝沿建基面的强度破坏实质上是稳定性问题，属于极值点失稳。
In this thesis, the FEM stress analysis and strength design criteria, multi-axes strength theory and computation, limit load analysis method of arch DAMS are concerned.
本文结合工程实际，在拱坝有限元应力分析方法与强度设计准则、多轴应力强度安全计算、拱坝极限荷载分析理论和方法等方面开展研究。
This paper analyzes the reason of the double arch bridge's damages in theory, combined with the maintenance and reinforcement project of Yellow Dragon bridge.
本论文基于这种思想，结合黄龙大桥的维修加固工程，从理论上对双曲拱桥的病害原因进行分析，并总结了常见的加固方法。
It had made an analyse and optimized the the design of two-arch tunnel by making use of plane FEM theory analyse, and this received good economical effect.
利用平面有限元理论分析并优化了双连拱隧道的设计，并在施工中取得很好经济效果。
However, it is restricted in application owing to the lack of a sound theory about the calculation of force of the parabolic oblique arch bridge.
但对抛物线斜板拱桥的受力计算尚无成熟理论，使之应用受到限制。
Applying the step by step approximation, this paper deduces the theory and formulas of calculating the limit carrying capacity of arch bridge on the condition of four hinged destruction.
以四铰破坏为条件，推导引用逐次逼近法计算拱桥极限承载力的理论方法及计算公式。
The results show that the formula which is based on the theory of pure-pressarch bucking are not adapt to the bucking analysis of press-bending arch.
由于各国规范的理论基础均来源于纯压拱的线弹性分支点屈曲，因此应用这些公式来估算弯压拱的分支点屈曲荷载必须使用相对较大的稳定系数。
The Optimum Control Theory is applied to establish the double objective model and energy model for dynamic optimization of arch dam.
本文用最优控制理论建立双目标模型与能量模型对拱坝进行动力优化分析，两模型综合考虑拱坝的安全性、经济性和稳定性。
A non-linear theory is presented for stability of an arch with central curvc of symmetrically variable curvature under uniform lateral load.
提出一种分析对称变曲率拱在均布径向载荷作用下的非线性稳定性的理论方法。
However, the theory research of long-span steel arch bridge of our country is not thoroughly, and disputed.
但目前我国大跨度钢拱桥的理论研究仍不透彻，且存在诸多争议。
Based on the error theory, we strictly deduce where is the optimum measuring point and when the standard error of arch-height and that of chord - length are both defined in this paper.
本文从误差的传递着手，严密推证了弓高及弦长测量的标准差取不同值时最佳测量点的位置。
Based on the error theory, we strictly deduce where is the optimum measuring point and when the standard error of arch-height and that of chord - length are both defined in this paper.
本文从误差的传递着手，严密推证了弓高及弦长测量的标准差取不同值时最佳测量点的位置。
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