钢结构

The process of establishing neural network is as follows: input parameters of network are selected from thickness, preheat temperature, heat input, welding position and sampling point, output parameter of network is impact ductility CVN, two-layer neuronic network configuration, S-type active function and back-propagation learning algorithm are selected.

文章摘要：采用VC语言实现了X70管线钢环焊接头冲击韧性与环焊工艺之间神经网络结构的建立过程，将壁厚、预热温度、线能量、焊接位置、取样位置作为结构的输入，将环焊接头的CVN值作为结构的输出，选择了具有2层神经元的神经网络结构和S型激活函数及BP学习算法。

At last, natural frequencies of practical pre-stressed composite space truss are tested with pulsatory method on construction site and its damping ratio is calculated, which gives another important data for engineering design. In addition, through the model experiment of pre-stressed rectangular square pyramid composite space truss, the correctness of characteristics of internal force and the feasibility of tension recovery method are proved.

最后，在工程施工现场用脉动法测试自振频率，并借助于振动衰减曲线和半功率点法计算出预应力组合网架——钢与混凝土的混合结构体系——的阻尼比，此又为工程设计提供了一理论依据；另外，通过正放四角锥预应力组合网架的模型试验，验证了结构内力分布特点的正确性以及张力松弛法的可行性。

Light-gauge steel residence is a new type of residential building system which is composed of cold-formed steel frame and wallboard.

由冷弯薄壁型钢骨架和墙板组合的结构体系是轻钢低层住宅中一种富有特色的新型结构体系。

For the structures and components in accordance with Chapters 6 and 7, structural steels according to EN 10025 as well as weldable fine grained steels according to EN 10113 may be used.

1可以使用依据第六，第七章要求的结构和部件、依据EN 10025要求的结构钢，以及依据EN 10113要求的具有良好焊接性能的钢材。

Based on great amount of structural steel spliced joint model experiments,related calculation formula have been derived and verified with theory and practice.The conclusions from the experiments will be useful for design and construction of prespliced joint for bridge structures.

通过大量结构钢拼接接头模型试验，得出不同状态下的实验结果，并据此推导出相关计算公式，从理论和实践中进一步验证其可行性，所得结论对预制拼接梁桥结构施工和设计有指导作用。

Dongguan City Qinglong Architecture Civil Engineering Company Limited has reinforced waterproof building, structural reinforcement of the special construction quality, professional to undertake the design of building structural reinforcing,Anchor, visco-steel-clad steel, carbon fiber reinforcement, crack repair, foundation reinforcement, building waterproof plugging leakage and other works and technical advice.

东莞市青龙土木建筑加固工程有限公司具有建筑防水、结构加固的专项施工资质，专业承接建筑结构加固补强设计、植筋锚栓、粘钢包钢、碳纤维加固、裂缝修补、基础加固、建筑防水堵漏等工程的施工及技术咨询。

Based on the structural analysis of the steel coal scuttle of the thermal power plant, a method of applying shear force on the complicated curved surface of the shell structure is put forward.

结合火电厂钢煤斗结构分析的实际，提出了板壳结构有限元分析中复杂曲面切向荷载的施加方法，即将面荷载转化为等效节点荷载。

A model for the optimization design of orthotiopic steel deck plate was piovided, in which the structural cost was taken as the objective function, and the rigidity and allowed stress of the orthotropic steel deck plate were taken as the constraints.

以计入结构材料重量和焊缝体积的结构造价为目标函数，建立了考虑局部受力和稳定容许应力约束的钢桥面加劲板优化分析模型。

Based on the characteristics of staged-construction of foundation pit and the interaction of diaphragm walls-bracing-soil, a FEM method is provided in this paper to analyze the moment and deformation of the diaphragm walls in whole process of foundation construction, taking consideration of all the possible construction stages from the beginning of excavation to the end of foundation, and the influence of cap beam, pre-load of steel bracing, removal and change of bracing, and the corresponding computer program is composed.

本文首先基于杆系有限元计算原理、基坑工程分工况施工以及围护体、支撑、土体协同工作的特点，提出了一种基坑支护结构全过程内力及变形分析方法，编制了相应的计算程序。该法可考虑第一阶段挖土至±0.000结构楼层施工结束期间的所有工况，可考虑压顶梁对围护体变形的制约作用，以及钢支撑预加轴力、拆撑、换撑等因素的影响。

A Use of round bamboo columns and trussed rafters as main load bearing element,Use of split bamboo grids/chicken mesh and plastered with cement mortar to act as shear walls for transmitting wind loads and to provide overall stability to the structure, Application of appropriate preservative treatment of bamboo depending on the degree of hazard and service conditions, Use of BMB gussets in combination with mild steel bolts for load bearing joints in roofing structure, and Use of BMCS as roof claddings.

1原竹的利用和构架椽子作为主要的承载元素；(2)劈蔑竹和竹片胶合作为剪切壁，它能起到透风的作用，并能为其结构提供整体的稳定性；(3)根据危害和公共条件的程度作适当的竹子防腐处理；(4)在屋顶结构上，用于承载的接合点与软钢螺丝相结用于竹子的三角架；(5)竹席皱纹片用于顶部的包层。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。