Some effective methods are given out to eliminate the extra force in this paper , such as variable structure pid control , position compensation , and velocity feedback . they greatly improve the performance of the loading system . but for the full - loading of fore - landing gear , it still ca n ' t meet the loading precision completely 为了克服多余力，本文采用了变结构的pid控制及位置补偿、速度反馈等方法，对于主起全载和前起半载试验，取得了良好的效果；而对于前起全载试验，在进一步采用对给定载荷谱进行滤波，模糊控制等方法后仍不能完全满足要求的性能指标，在加载试验研制总结中简单分析了其原因。
An innovative strengthening scheme for reinforced concrete space beam - column joints using high strength steel wire mesh and polymer mortar jacket was proposed , and the quasi - static tests of three reinforced concrete beam - column joints with floor slab and transverse beams were performed to verify the efficiency of the strengthening scheme 摘要提出了采用新技术高强钢绞线网片聚合物砂浆加固技术提高钢筋混凝土空间框架节点抗震性能的方法，并通过3个带有直交梁和楼板的空间框架节点试件的低周反复加载试验对该加固方法进行了检验。
Experiments of six staggered beam - column joints of rc frame under slow cyclic loading are completed , among which three specimens " elevation difference of beams is one beam height and the others " is two - third of beam height , through the experiment study and the compare of their seismic behavior with ordinary joints ' , the following is concluded : 1 本文通过对按混凝土结构设计规范设计的六个错层高度为一个梁高和2 3个梁高的梁-柱错层组合体的低周反复加载试验，将错层梁-柱组合体的受力性能与普通梁-柱组合体的受力性能作了比较，得出以下结论： 1
According to the demand of 《 code for seismic design of building 》 ( gb50011 - 2001 ) , furthermore , based on the experimental study of two 1 / 15 reduced - scale shear wall models under low frequency cyclic and reversed lateral loads , the interacting behavior of the r . c frame column and the shear wall is studied , the failure mechanism and energy dissipation mechanism of moderate and tall shear wall with r . c frame column are compared , the seismic behavior is evaluated by the comparison of strength , stiffness , ductility , restoring force characteristics as well as energy consumption ability . it was showed by the experimental results that the earthquake resistant energy dissipation ability of the shear wall with frame column is satisfactory 因此，为了探讨这类剪力墙结构的抗震性能，本文以我国现行《建筑抗震设计规范》 ( gb50011 - 2001 )的要求为基础，通过1 15的缩尺比，将一纵向框架一剪力墙原型结构中的剪力墙结构模拟为一个试验模型并对其进行了伪静力加载试验，研究了墙板与边框柱的共同工作性能，分析了带边框柱中高剪力墙的受力特点、破坏及耗能机理，并从承载力、刚度、变形、延性及恢复力特性等方面综合评价了其抗震性能，得出了一些有益的设计理念和方法。
This paper analyses multi - stage pre - stressing and different parameters produce the impacts to static and dynamical behavior of the structure by theoretical calculation and experimental research . the conclusion can provide reference to static and seismic design of arch truss string structure . the main issues in the paper are : the multi - stage pre - stressing loading experiment is studied in this paper 本文通过理论计算和试验研究分析了多次张拉预应力、参数设置对张弦拱桁架结构静力、动力性能的影响,主要完成了以下几方面的工作:进行了模拟施工过程中的多次预应力加载试验。
A series of specimens with circular sections were tested , which included the short - term behavior of 24 frp - confmed concrete specimens under different load eccentricities and the long - term behavior of eight frp - confined concrete columns under different load ratios . an attempt to predict the time - dependent behavior of frp - confined concrete columns and beam columns with circular sections is proposed by the aci209 ( 1997 ) specifications model 本文进行了frp约束混凝土柱的一系列试验研究，包括24个frp约束混凝土构件在不同偏心率情况下的一次加载试验研究和8个frp约束混凝土轴心受压构件在不同轴压比情况下在长期荷载作用下的力学性能试验研究。
The traditional shear wall structure has such disadvantage as large self - weight , stiflhess and seismic forces , poor - ductility and energy saving . based on the post investigation , this paper put forward a new type of hollow shear wall structure with seams . the seismic behavior and design method are investigated and following work on test and theory are done : based on the pseudo - static test of two hollow shear walls with seams , the seismic behavior of the walls are researched 针对其抗震性能和设计方法，作了较为系统的试验研究和理论分析：以多层住宅结构底层抗震墙为原型，完成了两片带缝空心剪力墙板的1 2模型低周反复加载试验，对这一新型构件的抗震性能进行了系统研究。
