The article is briefly introduced the plane photoelastic model of Qihe river inverted siphon and the test with load on simulation of water in river course and without water in pipe, comparing and analyzing the results with structural mechanics and two-dimensional finite element results.

Based on analysis of the dam's structural mechanics behavior and its joined observed displacement data(droop line), this paper has applied low probability method and hybrid model method of structural analysis to study the safety monitoring index of horizontal displacement of Shuikou dam.

The method usually used in the course of powerhouse designing at present is the method of structural mechanics, the method of mechanics of materials and finite element method.

In the structural mechanics method, elastic thin wall column shell and thin slab theory is used in the computation of sidewall and bottomplate, and underground frame moment distribution method is used in the analysis of sidewall and bottomplate taking into account their rigid connection.

the results of FEM method and elastic mechanics method are compared, stress transfer and composition of internal force based on the result of FEM analysis is carried to make comparison of the structural mechanics computation result and FEM result, and the reason for the difference is studied fromthe analysis theory.

In the structural mechanics method, elastic thin wall column shell and thin slab theory is used in the computation, and consider two rigid conjunctions, adopt underground frame bending moment allotment method to admeasure the wall of a well and the scaleboard bending moment.

The structural mechanics and finite element methods have been generally used in the stress analysis of concrete diaphragm wall. The results from the former could be a big difference from that of actual observation on prototype, or even gain a complete opposite conclusions.

There are main three methods in the stress analysis and the stability analysis of the pumping station at present time, which are mechanics of structures method mechanics of materials method and finite element method.

At present, the main methods in the stress analysis and the stability analysis of the pumping station are: mechanics of structures method, mechanics of materials method, finite element method.

There are main three methods in the mechincal analysis and the stability analysis to the workshop of pumping station at present time, which are mechanics of structures method、 mechanics of materials method and finite element method.

The article analyzes three calculation methods for Tunnel 7 # segment structure of Yellow River Diversion Project Connection Works, and the final caculation results has been applicated successfully in the project and obtained the expected effect.

③ Point out the characteristic in size and safety of tailing dams at home, after the definition of the tailings reservoir system, some mechanical characteristic and its evolving variation of above system has been analysed.

③ 提出了尾矿库系统的概念，并对我国尾矿工程规模和安全上的特点和尾矿库系统的组成特点、尾矿库系统的力学特性及其演化控制变量进行了分析。 ④ 结合尾矿颗粒在平面及竖直面的不同分布特点，分析了土工织物增强尾矿砂复合材料因相几何、相物理以及荷载特征变化对结构力学性能的影响；

The characteristic of water elastic model is that it can satisfy hydraulicssimilarity principle and structural dynamics similarity principle simultaneously. Itcan reflect the complex coupling action between prototype structure and wateraccurately.

Additionally, classification system of surrounding rock mass that appeals to this area is explored by properly modi1~uing the system brought forward in Engineering Rock Mass Class qlcatian Standard Stability analysis of the hat under different kinds of rock mass structure is completed and the upper wall stability of the main workshop is studied in the light of SMR system used in slope stability analysis.

Advances in structural mechanics of Chinese ancient architectures

The researches on the structural mechanics of ancient architectures show the different aspects of structure and mechanics.

Systematical studies on the structural mechanics of ancient architectures have been carried out at Xi'an Jiaotong University since 1982.

Many historical buildings have in fact problems of structural strength and stability; the need for further studies on structural mechanics and materials is definitely growing.

This turbine blade optimization is based on the optimization frame software iSIGHT, in which four disciplines (aerodynamics, thermal dynamics, structural mechanics and structural dynamics) have been integrated.

The researches on the structural mechanics of ancient architectures show the different aspects of structure and mechanics.

Systematical studies on the structural mechanics of ancient architectures have been carried out at Xi'an Jiaotong University since 1982.

The matching with the structural mechanics of the wall is given by a simple local way.

Following the structural mechanics approach, the elastic modulus, Poisson's ratio, and the deformation behaviors of SWNTs were investigated as a function of the nanotube size and structure.

Tissues heal themselves and we understand little of the structural mechanics of the process.

The arch belly gravity dam is a new type of dam. Its upstream face is inclined and it has a belly arch within. The stress distribution of the dam section is comparatively uniform so that the strength of materials can be filly utilized; the vertical stress at the heel of the dam is comparative high so that the capability of the dam to sustain extraordinary overloading is high. .Comparing with ordinary gravity dam, its stress condition is greatly improved. In order to search for the best profile of new type...

The arch belly gravity dam is a new type of dam. Its upstream face is inclined and it has a belly arch within. The stress distribution of the dam section is comparatively uniform so that the strength of materials can be filly utilized; the vertical stress at the heel of the dam is comparative high so that the capability of the dam to sustain extraordinary overloading is high. .Comparing with ordinary gravity dam, its stress condition is greatly improved. In order to search for the best profile of new type of dam, stress experiments of more than twenty profiles of the dam section of different dimension have been performed by photoelastic frozen method. Through balance check of forces and repeated tests of recommened profiles, it has been proved that the results of the experimentals are believable. The stress condition of several profiles is also experimented with the net method of gelatin models. The stresses are also computed by structure theory with the profile assumed as a hingeless arch. The stresses obtained by the above three methods are approximate. Based upon the results of stress experiments, the effect of the change of dimension of the profile on the stress distribution has been studied. It is considered that the rule to determine the dimension is as follow: The slope of upstream face would be 1: 0. 2-1: 0. 4, and that of the downstream face 1:0. 75-1: 0. 9; the belly arch would be made elliptical with its major axis slightly inclined toward upstream; the arch would be -25--~35% as high as the dam; the upstream leg would be thicker than the downstream leg, so that the center of the gravity of the section would be slightly shifted to the upstream. If the arch belly are used as powerhouse of hydroelectric plant, the width of the draft tube would be equal to or less than 30% of the dam block. The results of stress experiments of the finally recommended profiles have shown that the stresses in the dam section are principal compressive, the stress distribution in the dam section is uniform, and the stress at the heel of the dam is higher. Take profile 1-Ⅷ as an example, compressive stresses occur in the whole section, except that at a few points tensile stresses of no more than 4 kr/cm2 are developed. The ratio of maxinum and mininum stresses in the section is less than 2. The vertical compressive stress at the heel of the dam is, greater than two times the head at the same point, so that the dam has greater capability to resist the overloading. It can be seen that the arch belly gravity dam is a noteworthy new type of dam

How to calculate the temperature stresses of the pressure pipe after the concrete rending is of importance to understand expansion of crevice and estimate danger degree. According to the actual measured temperature data and the data on the expanding processes of crevices, the authors deduced the calculation formulas and drew up the calculation lists on ground of the basic principles of structural mechanics and reinforced concrete structure. This is a simple and easy way to size up internal-force changes while...

How to calculate the temperature stresses of the pressure pipe after the concrete rending is of importance to understand expansion of crevice and estimate danger degree. According to the actual measured temperature data and the data on the expanding processes of crevices, the authors deduced the calculation formulas and drew up the calculation lists on ground of the basic principles of structural mechanics and reinforced concrete structure. This is a simple and easy way to size up internal-force changes while the pressure pipe concrete rended. The calculation method has been used to the analysis of crevice settlement in an inverted siphon.

Based on the principle of structural mechanics, a formula which de- scribes the functional relationship between all mechanical elements in the arch dam, such as the force systems of arch crown and abutments, stre- sses, deformations, and the ratio between moduli of elasticity of rock foundation and dam body, is derived in this paper, The formula, being unrelated fo the shape of the arch axis, is applicable to any arch shape only if the essential hypotheses are satistied. By changing the modulus of rock base,...

Based on the principle of structural mechanics, a formula which de- scribes the functional relationship between all mechanical elements in the arch dam, such as the force systems of arch crown and abutments, stre- sses, deformations, and the ratio between moduli of elasticity of rock foundation and dam body, is derived in this paper, The formula, being unrelated fo the shape of the arch axis, is applicable to any arch shape only if the essential hypotheses are satistied. By changing the modulus of rock base, the effect on the stabilities of dam abutment, stresses and deformations for various types of arch dam are studied in this paper, and special discousion on the different shapes of arch rib is made in detail.