箍筋

Compution results show that the influence of longitudinal reinforcement ratio and cross section dimension could reduce the midspan dynamic drift, but the influence of stirrup ratio does not have obvious effect on the dynamic response.

计算结果表明：增加纵向配筋率与截面尺寸可以显著降低柱中节点位移，而增加箍筋配筋率的效果不明显。

In the test research of the most radical plane column-beam joint specimens are done, so the feasibility and the problem for this construction method could be discussed.

基于此，本文有针对性的对轴压比、剪压比及梁柱混凝土强度级差进行控制，设计并完成了7个按梁混凝土强度浇筑的钢筋混凝土平面框架节点的低周反复加载试验，通过量测各试件节点区水平箍筋以及贯穿节点的梁、柱纵筋在不同受力阶段的应变等，综合分析了各个试件的延性、耗能性及梁柱纵筋的粘结退化状况，考察了节点核心区采用梁混凝土浇筑后对试件综合抗震性能的影响。

Under the precondition of ensuring resist-shear and ductility of reinforced concrete structure, it is easy for allocating steel bars and convenient for construction to use the new type of steel bars substitute the middle tie steel bar or the staggered hoop reinforcement.

本文研究了一种新的约束配筋形式，在保证钢筋混凝土结构抗剪性能与延性的前提下，替代柱中的中间拉筋或交错箍筋，配筋简单，施工方便。

The minimum stirrups requirements for different antiseismic design grade were proposed.

综合已有高强混凝土压弯构件的试验资料，给出了配LL5 5 0冷轧带肋箍筋高强混凝土柱抗震设计中最小含箍特征值限值的建议。

The relative formula between axial pressure ratio and hooped reinforcement ratio of short column is obtained. The suggested limit values of axial pressure ratio and minimum hooped ratio of short columus are put forward through the test, which satisfy certain requirement of ductility.

通过试验对高强混凝土短柱的破坏特性和滞回特性进行了分析，分析了影响高强混凝土短柱延性的主要因素，得出了满足一定延性要求的高强混凝土短柱的轴压比和配箍率的关系公式；同时提出了满足一定延性要求的高强混凝土短柱的轴压比限值和箍筋加密区的最小配箍率的建议值。

In this program, the declining segment of the stress-strain relation of the concrete, the restriction effect of hooped reinforcement and the bond-slip problem of the reinforcement are considered, as the same time the optimized arithmetic is applied to accelerate calculation procedure. Though the appropriate experiment arrangement, the influential factor such as the strength of concrete, the ratio of hooped reinforcement, the ratio of axial compression and the loading angle are researched, some available rules of carrying ability and ductility of the special-shaped column can be attained.

程序中考虑了混凝土应力应变曲线的下降段及箍筋对混凝土的约束影响，采用了合适的算法加速计算过程并考虑了纵筋锚固滑移的影响，通过正交试验分析了混凝土强度、体积配箍率、轴压比和荷载角对异形柱截面抗弯承载能力及截面曲率延性比的影响。

Inquired into strictly the length calculation formula of round column component spiral hoop steel with its common errors, and figured out accurately the length coefficient of steel round column component spiral hoop based on combination fact situation of works.

正确计算螺旋箍筋的工程量，关键在于求取其箍筋长度，进而在此基础上准确统计出钢筋用量。由于钢材的价格较其它建筑材料要高许多，因此这对工程建设双方而言，都是十分重要的问题。

Leading products: GQ40-type reinforcing steel cutting machine, GQ50-type reinforcing steel cutting machine, GQ16-type reinforcing steel cutting machine, GW40-type steel bending machine, GW40C steel semi-automatic bending machine, GW40-1 type steel bending machine, GW50 steel bending machine type, GF - l6-type steel stirrup bending machine, GF-l8-type steel stirrup bending machine, GT6-12-type steel Straightening Machine, HMD, HMR vane surface wipe-ray machine, JQ70-type rammers, JQ85-B-type ( Honda GX120) rammers, HQL18 (12)-type road-cut machine

主导产品：GQ40型钢筋切断机、GQ50型钢筋切断机、GQ16型钢筋切断机、GW40型钢筋弯曲机、GW40C型半自动钢筋弯曲机、GW40-1型钢筋弯曲机、GW50型钢筋弯曲机、GF-l6型钢筋箍筋弯曲机、GF-l8型钢筋箍筋弯曲机、GT6-12型钢筋调直机、HMD、HMR叶片式地面抹光机、JQ70型冲击夯、JQ85-B型(本田GX120)冲击夯、HQL18(12)型路面切缝机

The effect factors analysis based on FEM shows that: Raising the strength of concrete and the thickness of cover concrete would delay the cracking of concrete; Stress superposition would appear due to the influence of adjacent rebar, and increasing the rebar space would postpone the time of cover cracking; Stirrup could suppress the cracking of cover concrete, however, the effect is limited and the corrosion-degree-ratio and corrosion expansive force would not increase until the cover concrete cracking happens completely.

结合有限元分析结果，对影响锈胀开裂的各因素进行了分析，结果表明：提高混凝土强度、增加保护层厚度有助于延缓保护层的开裂；相邻钢筋的存在会使钢筋之间的混凝土出现应力叠加现象，箍筋对混凝土保护层内由锈胀产生的应力具有抑制作用，但是在保护层完全开裂之前，箍筋的抑制作用有限。

Along the circle inside the rebar cage, 3 sound testing tubes should be installed equally and welded on the stirrup strengthening the structure, and lower down into the hole along with the rebar cage.

沿桩身箍筋内侧等间距布设3根声测管，并焊于加强骨架箍筋上，于钢筋笼同时下放。

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。