Third , the theory and formulations about the stress redistribution due to creep and shrinkage of composite section and the secondary internal forces which are caused in hyper static structure , the self - stressed force and the secondary internal forces due to expansion , are studied , program is compiled by use of formulations studied above and it is used to analyze sensors that are installed during the course of work 再次，探讨了收缩徐变作用下组合截面应力重分布以及在超静定结构产生次内力和膨胀变形引起自内力和次内力计算理论及公式，编制了相应程序，对加固过程中埋设的传感器进行了分析计算。
Because continuous rigid frame bridge is a kind of multi - degree indeterminate structure , large internal force will be produced in the bridge structure due to the temperature effect . therefore , it is necessary to design the flexible pier with small lateral displacement rigidity , which calls for the decision of a reasonable ratio of beam bending rigidity to pier lateral displacement rigidity 此外，连续刚构桥是高次超静定结构，温度变化将引起较大的结构内力，需要设计抗推刚度较小的柔性墩以减小温度内力，合理确定主梁与墩的刚度比值是设计的关键。
Rigid - framed arch bridge is a statically indeterminate structure with thrusting force and over the cross section of the bridge structure induce obvious stresses resulted from temperature variations . however , because of the complexity of this bridge structures , it is so difficult to calculate temperature stress , and that researchers and designers have to simplify the calculating methods , and get inaccurate conclusions 刚架拱桥是一种有推力的高次超静定结构，温度效应对其的影响相当明显；但由于其构造复杂，计算结构的温度应力存在着很大的困难，这就使得研究和设计人员采取简化的计算方法，但得出的结论粗糙。
Abstract : it presents the law of “ the reverse is positive ” on how to evaluate the unknown force of statically determinate structure , the movement law of force vector for drawing the axial force diagram and shear diagram . and expounds the simple and convenient method of drawing the moment diagram according to the rubber band deformation , and the auxiliary teaching software corresponding to the above - mentioned methods . the methods are believed to save class hour and gain a better effect on teaching 文摘:阐述了求静定结构未知力的反为正规律；绘制轴力图、剪力图的力矢移动法则；按照橡皮筋变形绘弯矩图的简便作法以及与上述方法对应的计算机辅助教学软件.相信这样作，对教学可起到省课时、效果好的作用
And the procedure of solving initial prestress by equilibrium matrix theory and simplified method are elucidated . the self - stress mode of sunflower - patterned cable dome must be positive , and the mechanisms mode equals to zero . it seems like statically indeterminate structures and is geometrical stable structure 明确了葵花型索穹顶结构形态分析的具体内容；阐述了用平衡矩阵理论和简化算法求解索穹顶结构初始预应力的过程，指出葵花型索穹顶结构的自应力模态s 0且机构位移模态m = 0 ，相当于结构力学中的超静定结构，同时它也是几何稳定的结构；提出了考虑结构自重时葵花型索穹顶结构初始预应力的求解方法，这种方法求得的初始预应力更加准确。
Based on the steel - concrete coordinating relations , element stiffness matrix of geometrically nonlinear analysis , formulas for self - stresses by temperatures and displacements , stresses of corresponding superfluous structures are further studied . furthermore , a new theory and method for structural geometrical nonlinearity and buckling analysis is put forward 根据钢混协作关系进一步推导出钢混组合构件几何非线性分析单元刚度矩阵、温度自应力及钢混超静定结构温度位移和应力的计算公式，建立了一种新的基于钢混协作关系的异种材料组合构件的几何非线性和结构稳定性分析方法。
In redundancy structure , the structure ' s distortion and strain will change along with time because of creep . according to the characteristic of concrete ' s creep , the creep grows quickly in the concrete " earlier age . for the long of bridge ' s construction period , the concrete ' s age of different part are discrepantly 在超静定结构中，结构的变形和内力都会因徐变而随时间不断变化，对于实际的工程结构，结构的整体总是分阶段建造起来的，某些荷载(如自重)也是在结构建造过程中分阶段作用在不断生长的结构上的。
Reviewing study on concrete beams with external prestress home and overseas , we have found that these studies most deal with simple supported beam and rarely deal with continuous beam so as to people ' s knowledge of continuous concrete beam with external prestress is scanty . so it is necessary to do an in - depth study on continuous concrete beam with external prestress 纵观国内外在体外预应力混凝土梁方面的研究，可以发现，绝大多数的研究集中在简支梁方面，而对于作为超静定结构的连续梁的研究很少，以至于人们对体外预应力混凝土连续梁的认识还不够充分，所以有必要对体外预应力混凝土连续梁进行深入的研究。
According to different transverse difference in temperature and lengthways difference in temperature , the paper gave the method of computing temperature effect including : 1 ) the stress ot1 caused by nonlinear difference in temperature . 2 ) the constrain stress o t2 in undetermined structures by equivalent difference in temperature . 3 ) the constrain stress ot3 caused in undetermined structures by even difference in temperature tm 针对具有不同性质的横向温差和纵向温差，本文分别提出了预应力结构的温度效应的计算方法，包括： 1 )非线性温差引起的自约束应力_ ( t1 ) ； 2 )等效线性温差引起的超静定结构的约束太原理工大学硕士学位论文应力民3 ）均匀温差tw引起超静定结构中的约束应力4 4 ）均匀温差tm引起梁的轴向变形受到柱的侧向约束，与预应力筋的温度变形之间的差异引起的预应力的变化。
2 ) quiet fixed and supper quiet fixed structure refer to the aspect of geometry composition and bearing load state , the quiet fixed structure is a geometry variable system that does not have redundant restrict . its all reverse force and inner force can be computed with quiet equilibrium equation and the relative result is uniqueness 2 ）静定结构与超静定结构静定结构是指在几何组成方面，它是无多余约束的几何不变体系；在受力状态方面，它的全部反力和内力均可由静力平衡方程所求得，且其解具唯性。
