In the field of roof structure design, wind load is a very important designing load that is the main external load and the main cause to the roof destruction.

Compared with theoretical calculation,the test results show that the working condition of the bridge is in order at present and that the superstructure should be reinforced if the designing load grade needs to be improved.

3. To the design and strength checking computations for bearing rope of catwalk, the consideration of designing load. load selection and load combination are analyzed, which provide some theoretical reference to technicians when designing and calculating catwalk.

Based on above-mentioned research work, the determining methods of designing load for these connections were put forward consequently. 3. A shaking table test of a 1/20 scale model of the single tower of LG-Beijing building was carried out.

According to the stress of the key points on the cast-steel joint, the writer observes its working state under the most disadvantage designing load, and traces the full loading-displacement path, then calculates the joint’s ultimate strength.

This paper sets up the mathematical model of the loading system of the load simulator and analyzes the effects of interconnected stiffness between loading motor and object motor on the loading system As a result, the authors obtain some valuable conclusions which can provide a theoretical basis for designing load simulators with high performance

This article detailedly expatiated on to observe and take control construction stability of soft groundsill embankment dam combined with project example from designing load curve, distortion observed on locale, analyzing data and checking computations of stability.

The gate model has local yield strength and structural yield strength, with both their values being bigger than that of the designing load.

It is pointed out in this paper that the following apparent discrepancies exist in Coulomb's Theory: (1) In any problem in mechanics, a force to be definite must have all the three factors involved under consideration. In Coulomb's Theory, however, the point of application of the soil reaction on the plane of sliding is somehow neglected, thus enabling the arbitrary designation of the obliquity of the earth pressure on the wall to be equal to the friction angle between the wall surface and soil. As a matter...

It is pointed out in this paper that the following apparent discrepancies exist in Coulomb's Theory: (1) In any problem in mechanics, a force to be definite must have all the three factors involved under consideration. In Coulomb's Theory, however, the point of application of the soil reaction on the plane of sliding is somehow neglected, thus enabling the arbitrary designation of the obliquity of the earth pressure on the wall to be equal to the friction angle between the wall surface and soil. As a matter of principle, the point of application should never be slighted while the obliquity of the earth pressure could only have a value that is compatible with the conditions for equilibrium. (2) If the point of application of the soil reaction is taken into account in the problem, the sliding wedge would only tend to slide either on the plane of sliding or on the surface of wall but not on both at the same time, thus frustrating the very conceptidn of sliding wedge upon which Coulomb's Theory is founded. (3) The above discrepancies arise from the fact that the shape of the surface of sliding should be curvilinear in order to make the wedge tend to slide as desired, while Coulomb, however, adopted a plane surface instead. (4) Coulomb, in finding the plane of sliding, made use of the maximum earth pressure on the wall (for active pressure), which refers to the different magnitudes of pressure corresponding to different assumed inclinations of the plane of sliding. But from the relation between the yield of wall and amount of pressure, this maximum value is really the minimum pressure on the wall, which it is the purpose of the theory to find. In engineering books, however, this terminology of maximum pressure has caused considerable confusion, with the result that what is really the minimum pressure is carelessly taken as the maximum design load for the wall. How can a minimum load be used in a design?This paper also attempts to clarify some contended points in Rankine's Theory: (1) It is claimed by Prof. Terzaghi that Rankine's Theory is only a fallacy because of the yield of wall and that of the soil mass on its bed. This charge is unjust as it can be compared with Coulomb's Theory in the same respect. (2) Some books declare that Rankine's Theory is good only for walls with vertical back, but it is proved in this paper that this is not so. (3) It is also generally believed that Rankine's Theory is applicable only to wall surfaces with no friction. This is likewise taken by this paper as unfounded and illustration is given whereby, in this regard, Rankine's Theory is even better than Coulomb's, because it contains no contradiction, as does Coulomb's.

The evaluation of the gust-loading factor is very important to the design of structures subjected to lateral pressure from fluctuating wind. In the determination of the peak factor of fluctuating wind pressure, references or codes of U. S. S. R, Canada and France usually take approximations conerning the distributions of fluctuating wind pressure and of mass along the height of the structure. Another assumption made is that the wind pressure along the horizontal length of the structure is constant....

The evaluation of the gust-loading factor is very important to the design of structures subjected to lateral pressure from fluctuating wind. In the determination of the peak factor of fluctuating wind pressure, references or codes of U. S. S. R, Canada and France usually take approximations conerning the distributions of fluctuating wind pressure and of mass along the height of the structure. Another assumption made is that the wind pressure along the horizontal length of the structure is constant. Thus only approximate values can be obtained. This paper takes into account of the change of the gust pressure both along the height and the length of the structure, makes use of the theory of random vibration for resolution into natural modes of free vibration of systems with infinite or finite degrees of freedom, and derives a formula for the determination of the gust-loading factor. Furthermore, on the basis of experimental data from some typical districts in China and in some other countries, numerical values of gust factors have been calculated. Simplified formula's and equivalent formulas for gust factors of structures having uniform stiffness and mass along the height have also been given. The author has also prepared tables for design purposes and for reference in case of revision of the code on design loading.

A new type of externally supported gangform has been adopted in the construction of the 21-storey Ta-Ming Hotel, Shanghai. It has many advantages and can be successfully used in the erection of tall buildings with shear wall systems or frame-shear wall systems in which all exterior and interior wails are cast in place. This paper describes briefly the main features of the gangform, its design considerations and constructional techniques, together with their relations to structural design. The design...

A new type of externally supported gangform has been adopted in the construction of the 21-storey Ta-Ming Hotel, Shanghai. It has many advantages and can be successfully used in the erection of tall buildings with shear wall systems or frame-shear wall systems in which all exterior and interior wails are cast in place. This paper describes briefly the main features of the gangform, its design considerations and constructional techniques, together with their relations to structural design. The design loads as well as the necessary stiffness requirement for the gangform are also discussed.