| 1. | Plane cross - section assumption
平截面假定 |
| 2. | In order to assure the bonded - strengthened beams to have ductility and fully exert the compressive capability of concrete , the paper deduces the lower limit compressive height used in design from the plane section assumption and theory of limit destruction . the lower limit compressive height is when the strain of compressive edge fiber reaches its peak value ( 0 . 002 ) and the externally bonded material reaches its limited strain ( 0 . 01 )
由平截面假定和界限破坏理论，并保证粘贴加固梁具有一定的变形能力和较为充分地发挥混凝土的抗压性能，本文以受压区混凝土边缘应变达到峰值应变( 0 . 002 ) ，而加固材料应变刚好达到极限值( 0 . 01 )的界限破坏时混凝土受压区高度做为粘贴加固梁设计高度的下限值_ ( c0b ) h 。 |
| 3. | At the theoretical study part of the paper , the paper presents the analytical model based on a strain compatibility and equilibrium of internal forces , and analysis all specimens using the model in order to compare the analytical result with experimental result . and the paper find out that traditional analytical model can predict the behavior of the specimens accurately
本文以平截面假定为基础建立了力学模型，对试件进行了全过程分析，并与试件结果进行了比较，通过比较发现传统的力学模型可以较好地对预应力碳纤维布加固的受弯构件的工作性能进行预测。 |
| 4. | In the theoretical part of the thesis , the analytical model based on a strain compatibility and equilibrium of internal forces , and analysis all specimens using the model in order to compare the analytical of results with experimental results have been provided . and the study finds that traditional analytical model can predict accurately the behavior of the specimens
本文的理论部分，以平截面假定和内力平衡为基础建立了力学模型，对试件进行了全过程分析，并与试验结果进行了比较，通过比较发现传统的力学模型可以较好地对钢丝网复合砂浆加固的受弯构件的工作性能进行预测。 |
| 5. | Based on plane section assumption , this paper presents the methods of calculating the ultimate strength of the columns strengthened with cfrp , and makes a simplification of the methods . a fortran program on nonlinear method is presented to numerically analyze the characteristics of large eccentrically loaded columns strengthened by longitudinal straps of cfrp , calculating results compare well with experimental data
本文在平截面假定的基础上分别推导了碳纤维布纵向粘贴大偏心受压柱的正截面承载力校核和截面加固基本计算公式，并对公式进行了相应的简化；运用fortran语言编制相应程序对纵向粘贴碳纤维布大偏压柱进行了数值分析，本文公式计算结果和程序计算结果均与试验结果吻合良好。 |
| 6. | And the analytical model based on a strain compatibility and equilibrium of internal forces , as well as the all of the specimens using the model in order to compare the analytical results with the experimental results have been provided . and the study shows that traditional analytical model can accurately predict the behavior of the specimens . the analytical solutions of the bond shear and normal stresses in the
以平截面假定和内力平衡为基础建立了力学模型,对试件进行了全过程非线性分析,与试验结果进行了比较,通过比较发现该力学模型可以较好地对复合砂浆钢筋(丝)网加固的受弯构件的受力变形全过程进行模拟。 |
| 7. | 3 . a space bond slip relation of reinforcements in either end of a member is proposed , based on one - dimensional bond slip model of reinforcements proposed by teng zhiniirmg from tsinghua university , the first - time loaded ascending stage ? curve of which model is modified as the line which parameters are not changed so as to simply the computation . the bond , slip is regarded as the boundary nonlinearity of a member
3 、采用清华大学滕智明建议的一维钢筋粘结滑移恢复力模型，但从简化计算的角度出发，将首次加载的上升段曲线改为直线，并假定构件端部的诸多纵向钢筋的滑移服从平截面假定，考虑由节点锚固区粘结滑移引起的构件端截面轴向和两转角附加变形。 |
| 8. | The bearing capacity of normal section of the composite panels may be calculated according to the assumed limit state based on the modified normal sections while the deformation of the composite panels may be corrected according to the calculations made in line with the prevailing steel structure design codes and by taking into consideration the influence of the interfacial slipping motions
组合板的正截面承载力可按基于修正平截面假定的极限状态计算；组合板的变形，可在按现行钢结构设计规范计算的基础上，加上考虑界面滑移影响的附加变形值予以修正。 |
| 9. | The application of ansys in the field of civil engineering is investigated , which includes the selecting element type of the concrete , reinforcing bar and the cfrp and preferences ; the application of non - linear solution options ; handling constringency of non - linear ; plane section assumption ; coupling and the element birth and death
对ansys在土木工程上的应用进行了研究，包括混凝土、钢筋和碳纤维布单元的选取及参数的设置；钢筋混凝土有限元分析模型的类型；非线性分析选项的应用；非线性收敛的处理；平截面假定、耦合和单元生死的应用等。 |
| 10. | 5 ) based on test results and going by ultimate balance theory , the paper drew anti - shear formula of the wall under eccentric loads , and discussed the main factors which influenced its anti - shear bearing capacity . 6 ) based on plain section assumption , the paper studied the normal section bearing capacity of the wall . stress , strain and deformation computation was combined to establish bearing capacity formulas for the normal section under moment , unaxial loads and axial loads respectively
6 )以应变平截面假定为基础，对密肋复合墙体正截面极限承载力进行研究，即将墙体从初始受荷到正截面极限状态的各阶段的应力、内力及变形计算贯通起来，建立了墙体正截面压弯、拉弯承载力实用计算公式和轴心承载力计算公式。 |
