下梁

Test and analytical studies indicated that (1) connection moment strengths in positive bending were similar but in negative bending were different on the order of 0.72 and 0.6 percent compared to the bare steel beam subassembly so that the self-centering behavior of the subassemblies with the composite concrete slab was not observed,(2) force-transferring mechanism in the connection proposed was able to predict the force-deformation relationship of the subassembly with the composite concrete slab, and (3) a general-purpose nonlinear finite element analysis program ABAQUS was used to perform the correlation study on the subassemblies with and without composite concrete slab.

实验结果显示(1)含楼版试体在千斤顶往正方向作用时的弯矩与未架设楼版试体接近，但在千斤顶往负方向作用时未架设楼版试体的弯矩分别约为含楼版试体的0.72%及0.6%，所以预力梁柱接合系统於钢梁上架设楼版，对预力系统自行复位的能力造成很大的影响、(2)由预力梁柱接合系统力量与位移间的关系利用迭代方法可以预测含楼版试体的行为、及(3)以有限元素分析程式模拟其中一组含非传统楼版试体以探讨含楼版预力接合系统在挠曲载重作用下的行为。

The deformation of 4 one-span single storey composite steel frames with different connections between the reinforced concrete and the steel beam in 2-type of fire conditions were studied.

利用自行研制的火灾加温试验炉及相关测试装置，对2种不同连接方式共4榀组合钢框架在不同的火灾工况下的火灾变形性能进行了试验研究，火灾工况包括：梁、板、柱同时受火而节点不受火和梁、板受火而柱、节点不受火2种。

It consider the effect of the slenderness ratio to the critical loads.

讨论了细长比对梁的临界载荷的影响，给出了不同端部条件下，线性弹性Timoshenko梁的无量纲临界载荷。

On the North River Bridge Weicheng CFST arch main bridge construction S233 Provincial Highway Bridge (Gaoyou Depalletizing three to Jiangdu Port Section) under a span of 80.6m CFST arch, rigid tie beam for 1.4m × 1.8m pre-stressed box girder, cast-in-place method using stent Construction .

浅谈北澄子河大桥钢管砼拱主桥施工大桥为S233省道的一座跨径80.6m的下承式钢管混凝土拱桥，刚性系梁为1.4m×1.8m预应力箱形梁，采用支架现浇方法施工。

Considering the behaviors of unbonded prestressed concrete beams and steel reinforced concrete columns, a kind of nonconforming beam-column element was constructed and the analysis precision was improved. Loading and reloading paths were introduced into the constitutive relationship of concrete. It is helpful to the analysis program to trace the full-range mechanical behavior of structures including the descending part and the hysterisis characteristic under cyclic loading.

考虑无粘结预应力混凝土梁、型钢混凝土柱等结构构件的受力特点，构造非协调梁柱单元，提高了分析精度；混凝土的本构关系中，引入卸载路径和再加载路径，使得分析程序可以追踪包括下降段在内的结构全过程力学行为，以及反复荷载下结构的滞回特性。

While under the same anchorage conditions, the ultimate tensile stress in adhesive reinforcement of beam is much smaller than the ultimate stress in pull-out test of block specimen.

将植筋搭接梁的试验结果与块体试件植筋锚固单向拉拔试验的结果比较表明，在相同植筋条件下，梁式试件破坏时钢筋的应力远小于块体试件单向拉拔试件破坏时钢筋的应力。

However, in designing the beamless slabs with equivalent frame method, the stress is an average values along the depth of section, which varies with the normal service state. Compared with the results by finite element method, the results gained by equivalent frame method cannot satisfy the requirement under the normal service state. Therefore, the tendons of beamless slabs should be designed and arranged based on the results of FEM taking account into vertical load and prestressed load.

本文通过分析，认为采用等代框架法进行无梁板设计时，其内力是基于截面平均的结果，在正常使用状态与实际受力状态有很大的不同，通过对比等代框架法和有限元计算的正常使用极限状态应力可知，按等代框架法设计的预应力布置并不能保证其正常使用极限状态的要求，据此提出了应根据无梁板在竖向荷载和预应力共同作用下弹性有限元分析结果进行预应力筋布置的建议。

Here, the dual nonlinear tangental stiffness matrixes of binodal spatial beam element and triangular plate/shell element of 6 nodal DOF to Update\|Lagrange coordinate systems are derived, the incremental equation of virtual work is linearized to simplified calculation,beam\|plate coupling,deviation of principal nodes and subordinated no...

推导了三维桁元、梁元和三角形板壳元在UL描述下的双重非线性切线刚度矩阵，通过对增量形式虚功方程作线性化处理来减少计算量，考虑了梁／杆与板对应节点定位偏差和节点焊接安装误差，进而编制计算程序。

Bone trabecula just under the calcaneocuboid articular surface was compact and redundant, with the thickness about 5 mm. Conclusions: Screws can be implanted into the calcaneocuboid articular surface where is filled with compacted trabecula.

结果：跟骨骰骨关节面的横径为(22.67±2.14)mm；其内倾角为(60.4±7.1)°；紧邻跟骨骰骨关节面关节面下的压力骨小梁是致密的，厚度大约为5 mm，向后方和下方的骨小梁逐渐变得稀少、疏松。

The resolute indicates that the entire bridge is reasonable.(2) By establishing another two commeasurable model, the influence of vice-arch and beam-arch cooperation on dead load、live load and tension force of tie-bar was analyzed.

结果表明活载作用下协作体系拱桥边拱拱顶段表现为梁的工作性能，弯矩显著增大；副拱的约束作用能减小结构的变形，弥补拱梁协作对结构受力带来的不利影响。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。