| 1. | Axial compression strength discrediting of rectangular section symmetry reinforced eccentric loading columns
非均匀配筋圆截面偏心受压桩承载力的计算 |
| 2. | So , the bond stress and slip of src eccentric loading columns must be accurately measured and studied further
因此有必要通过准确量测构件内部的粘结应力和滑移，进一步对偏压柱的粘结滑移性能进行研究。 |
| 3. | On the other hand , due to the difference of the loading form on eccentric loading column with push - out test and short - column test , the bond - slip performance ca n ' t be displayed in it
同时，由于推出试验( push - outtest )和短柱试验( short - columntest )与偏压柱的受力状况有差别，并不能真正反映出构件中的粘结滑移性能。 |
| 4. | According to the force balance equations , the values and distributions of bond stress between steel shape flange and concrete in eccentric loading columns were established by statistically regression with experiment data . and the influence of the factors such as relative eccentricity e0 / h , the slenderness ratio l0 / h on the bond - slip properties was analyzed
利用力的平衡方程，通过对试验数据统计回归，得到了偏压柱型钢两侧翼缘与混凝土的粘结应力的大小及分布规律，并分析了偏压柱长细比、偏心距对其的影响。 |
| 5. | Based on the reasonable model of bond - slip , theoretical calculating about slip and slip strain was done . and then the influence of it between steel shape flange and concrete on stiffness deflection of eccentric loading columns was conducted and a simple calculating formula about stiffness of eccentric loading columns was built
在建立合理的粘结滑移模型的基础上，对型钢与混凝土的滑移，及滑移应变进行了理西安建筑科技大学博士学位论文论计算，并进一步推导出型钢与混凝土的滑移效应对偏压柱刚度、变形的影响程度，建立了简化的偏压柱刚度计算公式。 |
| 6. | By conducting the degree of influence of slip strain on average strain of a member section , some parameters of corrected even section were accurately calculated , which made the corrected even section more reasonable . and then a calculating model of bearing capacity for eccentric loading columns was proposed by using limit balance equations
通过推导滑移应变对构件截面平均应变的影响，准确确定出修正平截面中的一些参数，使修正平截面更趋合理性，再利用极限平衡方程，建立了src偏压柱受压承载力计算模型。 |
| 7. | 20 src eccentric loading specimens were designed taking the relative eccentricity e0 / h the slendemess ratio 10 / h as the factors . according to the mechanical behavior of eccentric loading columns , unidirectional embedded electronic steel - concrete slip transfers and double - directional embedded electronic steel - concrete slip transfers were respectively placed inside these 20 specimens and electronic strain gauges were also installed on the steel shape flanges webs and concrete . the change of the mechanical behavior and interior slip of the 20 specimens in the whole process of loading was fully observed
设计了以长细比、偏心距为主要参数的20个偏压柱试件，根据偏压柱的受力特性，在试件中分别放置了单向内置式钢?混凝土电子滑移传感器和双向内置式钢?混凝土电子滑移传感器，并分别在型钢翼缘、腹板和混凝土上布置了电子应变片，对试验柱在受荷全过程的受力性能、和内部滑移的变化进行了细致的观察。 |
| 8. | Based on the reasonable relationship of bond - slip , by using nonlinear spring element simulating bond - slip model in columns , three - dimensional finite analysis for eccentric loading column was done with the two cases including considering and not considering the bond - slip performance between steel shape and concrete . and then the simulation results were compared with experimental results , which concluded
在合理的粘结滑移本构关系的基础上，采用非线性弹簧单元对柱中的粘结滑移进行数值模拟，分别按考虑和不考虑型钢与混凝土之间的滑移两种情况进行了三维有限元分析，与试验结果进行了分析比较，基本模拟出了构件受力性能和破环特征。 |
| 9. | In this paper , a reasonable and feasible method of test measurement and analysis about the bond - slip properties of src eccentric loading columns was firstly presented . based on the former test of our research group , " the embedded electronic steel - concrete slip transfer " ( patent authorization no . zl - 02 - 2 - 61881 . 3 ) was manufactured and exploited phasely , by which the interior slip between the steel shape and concrete along the embedment length could be directly measured , and the most difficult problem of experimental research was consequently solved . all these provided a basis for the further study on the bond - slip properties of src eccentric loading columns
本文首先提出了一套合理可行的型钢混凝土偏压柱粘结滑移性能的试验测试和研究方案，并在本课题组前期试验研究的基础上，研制了内置式钢?混凝土电子滑移传感器(专利授权号： zl - 02 - 2 - 61883 . 3 ) ，并进行了阶段性地研究开发，从而解决了型钢与混凝土连接面上滑移难以准确测量的关键问题，为进一步研究src偏压柱的粘结滑移性能奠定了基础。 |
| 10. | It is necessary to study and analyze the bond - slip properties between steel shape and concrete deeply , for establishing reasonably a set of calculating theory and analysis method about strengths stiffness and deflection of src ( steel reinforced concrete ) eccentric loading columns
对于型钢混凝土偏压柱，要合理地建立一整套的强度、刚度、变形计算理论和分析方法，并采用有限元法对复杂结构进行准确的分析计算，就必须对型钢混凝土的粘结性能进行深入的研究和了解。 |
