| 1. | Specification for design of reinforced concrete continuous beams and frames considering redistribution of internal forces 钢筋混凝土连接梁和框架考虑内力重分布设计规程 |
| 2. | Specification for design of reinforced concrete continuous beams and frames considering redistribution of internal forces 钢筋混凝土连续梁和框架考虑内力重分布设计规程 |
| 3. | A historical analysis in theory is carried on studying redistribution of internal force in the bonded post - tensioned partially prestressed concrete framesin this paper 本文编制了变刚度分析程序,重点研究了后张有粘结部分预应力混凝土框架的塑性内力重分布的规律。 |
| 4. | 1 . prestressing a composite girder enlarges the range of elastic behavior , adjusts the redistribution of internal force , reduces deflections , increases craking load and ultimate loading capacity . 2 预应力作用扩大了结构的弹性范围,调整了结构的内力重分布,减小了挠度变形,提高了开裂荷载与极限承载力。 |
| 5. | ( 3 ) the relative height compressive zone of section greatly influences the redistribution of internal force of the prestressed frames . the total modulation of moment decreases according as the increase of relative height compressive zone of section 随着中支座截面相对受压区高度的增大,次弯矩增大,次弯矩调幅增大,但荷载弯矩调幅以更大的幅度下降,导致总的弯矩调幅下降。 |
| 6. | At first , this thesis analyzes the main causes in theory , which have effects on the redistribution of internal force and modulation of moment for the bonded post - tensioned partially prestressed concrete frame ( for short prestressed frame ) , including the relative height of compressive zone of section ( ) , secondary moment and types of load applying . then , this thesis analyzes the test of prestressed frame . then , a method , called curvature - force method , for nonlinear analysis of prestressed frame is put forward 本文首先从理论上分析了影响后张有粘结部分预应力混凝土框架(简称为预应力框架)内力重分布和弯矩调幅的主要因素,即相对受压区高度、次弯矩和加载方式等,并初步分析了两榀只加竖向荷载和两榀既加竖向荷载又加水平荷载的单层单跨预应力框架静力加载的试验。 |
| 7. | Based on the experimental study of two presstressed frames , it analyses the question of redistribution of internal force and analyses influence of moment modulation of prestressed frames . therefore , it draws some conclusion as follow : 1 ) post - tensioned prestressed frames can be practiced on moment modulation . but how to operate decides on practical situation in design 本文通过对两榀近于足尺的后张有粘结预应力框架在跨间竖向荷载作用下的试验研究,探讨了预应力框架内力重分布问题,从塑性内力重分布入手分析了次弯矩对框架弯矩调幅的影响以及影响内力重分布的其他主要因素,得到一些概念性的认识和结论: ( 1 )对后张有粘结预应力框架可进行适当调幅。 |
| 8. | The main causes , which have effects on redistribution of internal force in the prestressed frame , including the relative height compressive zone of section , secondary moment and types of load applying are taken into account . the horizontal braces force which results from the tension of the prestressing steel , reduces the pre - compress stress is analyzed 并且探讨了各影响因素对框架梁截面延性的影响和由于柱的抗侧刚度在预应力钢筋张拉时约束梁的轴向变形,从而影响预应力在梁中的建立所造成的梁中轴向预压力的损失。 |
| 9. | For spatial , ideal elasto - plastic girder - pane structure system , using the stochastic finite element method , the static response of structural system is analyzed . taking redistribution of internal forces into account , safety margin functions of failure modes are established . using the advanced branch - and - bound method , the significant failure modes are identified , and the reliability of structural system is evaluated by pnet method 对空间理想弹塑性梁板体系结构,采用随机有限元计算结构系统的响应量;考虑内力重新分配,建立失效模式的安全余量方程,用验算点法计算失效模式安全余量的可靠性指标;用改进的分枝限界法,寻找主要失效模式:然后用pnet法计算结构系统的可靠性指标(或失效概率) 。 |
| 10. | ( 2 ) if secondary moment is taken for one kind of modulation of moment and there are the same , the effect of secondary moment on the modulation of moment becomes bigger with secondary moment becoming bigger . if prestressed frame can not complete full redistribution of internal force , ultimate load may put off and put up because of secondary moment . total coefficient of modulation of moment also is bigger ( 2 )如果把次弯矩看着是对框架的一种弯矩调幅,在相同的相对受压区高度下,次弯矩越大,次弯矩调幅作用越强;如果结构不能实现完全的内力重分布,则次弯矩能够延缓截面极限承载力的到来,提高结构的极限承载力,结构总的弯矩调幅系数也随着次弯矩的增大而增大。 |