1989, 11(4). DOI: 10.11835/j.issn.1674-4764.1989.04.001
Abstract:By using Hellinger-Reissner's calculus of variations,this paper presents the usual method with which the section strain distribution state of reinforced concrete member can be derived from the basic balance equation.This method is suitable for any difinite form of strain distribution of the compressional zone of concrete.It is made clear by calculation that if the compression zone of concrete has linear strain distribution in the deformation process,the strain of tension bar and the distribution mentioned above can satisfy the assumption of plane section multaneously.
1989, 11(4). DOI: 10.11835/j.issn.1674-4764.1989.04.002
Abstract:As a carrying body of culture,the achitecture reflects the achiev-ements and different levels of development of culture on various sides.The steady architectural skeleton is based on long-time sedimentation of culture in the historical periods.The super-steady mould that this skeleton expresses permeates the ideologies of Confucianism,Taoism and Buddhism.No matter what the kind of architecture is,it has the pubtic characters and temperaments reflecting the unified potential consciousness.This paper briefly analyses the vironment,overall,order, implication,confusion and seeking sameness of architecture in order to illustrate their importance in the contex of architecture.
1989, 11(4). DOI: 10.11835/j.issn.1674-4764.1989.04.003
Abstract:This paper makes use of a beam-colunm model in the elastopl-astic dynamic analysis of RC planar rames.For which an improved method is presented to estabish the envelopes of moment-curvature relationships by appli-cation of RC nonlinear analysis,and a program named PFEPDA suitable to mic-rocomputer is developed.
Sun Renbo Wang Daiyu [Department of Civil Engineering]
1989, 11(4). DOI: 10.11835/j.issn.1674-4764.1989.04.004
Abstract:On the basis of the calculated results of accurate analytic solution of stiffened rectangular plates,the general equations of cylindrical bending of the plates with tensile forces are established for engineering practice.Its solution combining with engineering problem is given for the special defor-mation conditions of elastic supports.In the paper,the numerical example is given and compared with references,it shows that the results are available.
1989, 11(4). DOI: 10.11835/j.issn.1674-4764.1989.04.005
Abstract:In this paper,the united method for determining shape function is extended to higher Serendipity soparametric element with variable nodes,and the general formulas of shape functions for the element is obtained.The formu-las show great superiority for the Serendipity isoparametic transitional elements.
1989, 11(4). DOI: 10.11835/j.issn.1674-4764.1989.04.006
Abstract:This paper presents a simple and efficient engineering design method of series-parallel correction for canonical system type 2 and gives a practical design example.The following and anti-disturbance performances of the system by means of digital simulation are analyzed.The performance indexes in different design parameters are listed.This paper is available for reference in engineerng design.
1989, 11(4). DOI: 10.11835/j.issn.1674-4764.1989.04.007
Abstract:In this paper,the acting characteristics and effect of ground water on the stability of construction site and foundations in investigation,design,construction and service of buildings and structures are presented.The main problems of ground water are discussed.
1989, 11(4). DOI: 10.11835/j.issn.1674-4764.1989.04.008
Abstract:In this Paper,multistoryed buildings of brick and RC floor slab construction are put up on frame beam of 12. 6 m partially prestressed concrete.A test and analysis is carried out on site.It provides a new scheme for multisto-reyed and highrise buildings with beam of transitive force and transfer floor.
1989, 11(4). DOI: 10.11835/j.issn.1674-4764.1989.04.010
Abstract:In general,the calculating result of a comparatively regular frame-shearing wall system in tall buildings,a 4-order differential equations are established according to the deformation-coordination of beams,columns and four boundary conditions.Then a series of formulas concerning internal forces and displacement is obtained These formulas are hyperbolic functions.This paper presents a method,which changes 4-order differential equations into 2-order and solves them by the expressions of new homogeneous solutionThen the formulas of internal forces and displacements become exponential functions By this method,the calculation is very convenient The result of suggested method agrees well with the general by comparison This paper is also applicable to buildings with some part of different height of storey or stiffness.
1989, 11(4). DOI: 10.11835/j.issn.1674-4764.1989.04.011
Abstract:This paper presents the general expressions of computer which include(1) calculation of the coefficient of normal equations;(2) calculation of the reduced coefficient;(3) calculation of[PVV];(4) calculation of the cor-relate;(5) calculation of the weight reciprocal(1/P_F)of the function of adju-sted value.Each calculation contains corresponding program of calculation.As a program block,it may be quoted at any time in the course of surveying computation.
1989, 11(4). DOI: 10.11835/j.issn.1674-4764.1989.04.012
Abstract:This paper discusses the mechanism and reason for decreasing the handling polynomial function data on difference with durum by datum.From the error theory,some exemples are analysed and the equivalent principle for the intervals on datum by datum is presented.The optimal number for intervals is analysed in detail and shown by some examples for the correct result.At last,by making comparison between some methods for handling the physical experimental data to show the advantages of them,the proper condition and range in use for every method is also presented.
1989, 11(4). DOI: 10.11835/j.issn.1674-4764.1989.04.013
Abstract:Cement concrete is the building material which is widely and lar-gely used.Congenital deficiency of cement concrete is brittleness.Adding a little polymer into cement concrete can improve its brittleness and function and even provide concrete with new function.This is an organized development trend of cement concrete.
1989, 11(4). DOI: 10.11835/j.issn.1674-4764.1989.04.014
Abstract:This paper introduces the metod of optimal design of municipal water distribution,The main points are the theory,mathematical model,program frame figure and example in practice of the optimal method of hydraulics.The program is applicable to the design and calculation of the pipe network in a city. It gives a simple and convenient calculation method for multiple-scheme design and scheme cmparison of water supply system.
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