The inherent vibration periods of lst to 6th modes,together with the time histories and the peak values of displacement and inner force in the pile at the three cases are analyzed and compared. From the simulated result,some fundamental aspects of pile-soil-structure dynamic interaction in liquefiable site are investigated.
This article introduces the character of Matlab language,as well as programming procedure method of finite element of structure analysis applying Matlab language in detail. It also makes a thorough analysis by giving examples to the displacement and inner force of a plane frame structure.
The paper analyzes the mechanical characteristics of the trussed suspended bridge in the round and obtains the variation law of displacement and inner force by establishing the space simulation model;
Displacement and inner force calculations on buried pipeline in vertical landslide will finalize resolutions of two nonlinearity e-quations and these can be solved by means of Newton iteration method or plotting method.
To counter liquid-gas lifting methods, gives a mechanical calculation model on oil tank lifting in different settlement and foundation treatment, makes a strength calculation to oil tank wall, fillet weld and bottom plate applying mechanical method and plate shell theory. Gives calculation formulae of displacement and inner force, and makes case calculation.
In accordance with applicable codes and standards and pile foundation computing theory,the computer program was compiled,Through analysis and comparison of examples,It is known that result of program is accurate,lt is convenient to calculate the displacement and inner force of high-level platform supported on pile by the program,in order to supply basis for engineering design.
In view of the special sea condition of south-sea, random response of offshore pile-supported jacket platform in deep water under the action of pyhoon and random waves is calculated and discussed in this paper.Structural response in relation to variation of wind speed and the problem of survival of platform under the action fo typhoon are also analysed. The long term distribution of the maximum wind speed of typhoon and the fundamental wind pressure are given, the response spectra is given too.The equivalent...
In view of the special sea condition of south-sea, random response of offshore pile-supported jacket platform in deep water under the action of pyhoon and random waves is calculated and discussed in this paper.Structural response in relation to variation of wind speed and the problem of survival of platform under the action fo typhoon are also analysed. The long term distribution of the maximum wind speed of typhoon and the fundamental wind pressure are given, the response spectra is given too.The equivalent linearization technique is used to revise the nonlinear drag force. In order to make problem more efficient,the matrix condensation technique is used in the procedure of calculating the frequencies and modal shapes.According to the theory of random vibration,the structural displacement and inner-force response can be easily obtained.A simple and reliable calculating model,method and a FORTRAN pro and developed.
This paper analyses the state of deformation and inner forces for fixed tubesheets of a heat exchanger, using the concept of composite plate consisting of inner perforated region and outer unperforated solid annular rim and the calculating method proposed by Singh and Solar. Transverse displacement and inner forces in perforated region as a function of radius are calculated according to an equivalent solid plate on elastic foundation with equivalent effective elastic constants and...
This paper analyses the state of deformation and inner forces for fixed tubesheets of a heat exchanger, using the concept of composite plate consisting of inner perforated region and outer unperforated solid annular rim and the calculating method proposed by Singh and Solar. Transverse displacement and inner forces in perforated region as a function of radius are calculated according to an equivalent solid plate on elastic foundation with equivalent effective elastic constants and by considering the reaction from the tube bundle, effects of differential thermal expansion between tubes and shell, interaction of tubesheet with shell/channel. The local stress multipliers due to Peterson are employed to evaluate the peak stresses at the edge of holes.
Simplifying the pipeline inside a landslide body to a large bending deflection beam and taking the pipeline outside landslide body a beam with half unlimited-length or pole,thinking of the pipe beam's geometric nonlinearity, physical nonlinearity of soil's vertical resisting force outside the landslide body and the action of pipeline's inner pressure and temperature difference, based on the continuity of pipeline's inner force and distortion both inside and outside the landslide body,derived...
Simplifying the pipeline inside a landslide body to a large bending deflection beam and taking the pipeline outside landslide body a beam with half unlimited-length or pole,thinking of the pipe beam's geometric nonlinearity, physical nonlinearity of soil's vertical resisting force outside the landslide body and the action of pipeline's inner pressure and temperature difference, based on the continuity of pipeline's inner force and distortion both inside and outside the landslide body,derived a relative calculation on pipeline's inner force and displacement under both conditions that equivalent axial force means a tension or a pressure and puts forward a discriminant when equivalent axial force is a tension or a pressure. Displacement and inner force calculations on buried pipeline in vertical landslide will finalize resolutions of two nonlinearity e-quations and these can be solved by means of Newton iteration method or plotting method. The article also provides calculating example and result analysis,and discusses shortcomings in previous theory.
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displacement and inner force
位移与内力
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