基础螺栓

Degree B-Spline curve is chosen to fit the longitudinal settlement curves, which solves the problem of curvature continuum for joint notes due to its continuous second derivative vector and overcomes the efficiency and accuracy of computing curvature with 3 points by hand.

选取三次B样条方法对隧道纵向累计沉降曲线进行拟合，利用三次B样条曲线二阶导矢连续的特性，解决了拟合曲线在曲线连接点处曲率的连续性问题，克服了以往人工计算隧道曲率半径在效率和准确性方面的缺陷；并在此基础上，推导了隧道纵向变形曲率与纵向螺栓拉应力、相对弯曲与纵向螺栓剪应力之间的关系； 3。

Based on equaling the semi-rigid connecting as the reduction of member end section bending stiffness,an optimization equivalent method is put forward on the principal of minimizing the error term between stiffness matrix of fined model and one of equivalent simple model.In this dissertation,structural fatigue cumulative damage and residual life assessment of wind-induced fatigue safety prewarning system is studied.S-N curve method and fracture mechanics method for fatigue analysis are discussed.

本文建立了高耸塔架结构中广泛使用的螺栓节点板联结节点的精细有限元模型，提出了一种优化等效的方法，以刚度矩阵的误差最小为等效原则，在把节点处杆件的半刚性联接等效为杆端截面抗弯刚度下降的基础上，得到了螺栓节点联结杆件的精细有限元模型与简化有限元模型的等效关系。

While embedding plate should levelly put on the corresponding place on reinforcing bar. Then marked out the axises both originally measured and that on the plate by using thread awl.

埋置地脚螺栓时，先将地脚螺栓套板平放在基础钢筋上相应位置，用线锤测定校正纵，横轴线与套板上标出的纵，横向轴线标志，沿套板周边在钢筋上作出标记。

A three-dimensional mechanical model and a transcalent model of bolted flange joint were built.

建立了螺栓法兰联接的三维力学及传热学模型，在考虑垫片非线性和接触问题的基础上，研究了法兰的瞬态温度场分布以及温度场的变化对垫片和螺栓载荷的影响。

Of a tight set of professional production and marketing packages, retirement dumping sets, crushing machine dedicated hub, Park nuts, washers and the only basis for withdrawal of Zhang Tao and manually slurry valve, manually Serous valve, pneumatic valve size, rolling, the rectangle, the first track bolts, T-bolts, knife at the end of bolts, Anchor Bolt, bolt-section,-key, plastic screws, Xiao class, grass-cutting Feidao pinched stainless steel screws and a fan-shaped, needle-shaped nozzle, high strength bolts and nuts, stainless steel bolts and nuts, copper bolts and nuts, motorcycle-wide standard of vehicles, vehicle standard parts, household electrical appliances, electrical equipment standard parts, furniture hardware , Dang Quan, rivets, and various non-standard fasteners GB-pieces, Chong parts, stamping parts, car parts, and so on.

苏州金良机电有限公司系一家专业生产销售紧定套，退卸套、破碎机专用衬套、园螺母、止退垫圈及基础件账套及手动浆料闸阀、手动浆液阀、气动浆液阀、滚动轴承座、长方头道轨螺栓、 T型螺栓、底刀螺栓、地脚螺栓、活节螺栓、平键、塑料螺丝，肖类，切草机飞刀压紧螺钉及不锈钢扇形、针形喷咀，高强度螺栓及螺母、不锈钢螺栓及螺母、铜螺栓及螺母、摩托车全车标准件、汽车标准件、家电、电气设备标准件、家俱五金、挡圈、铆钉、各种GB型紧固件及非标准件、冲制件、冲压件、车制件等。

A three-dimensional mechanical model and a heat transfer model of bolted flange joint were built.

建立了螺栓法兰联接的三维力学及传热学模型，在考虑垫片非线性基础上，研究了法兰的瞬态温度场分布以及温度场的变化，对垫片和螺栓载荷的影响。

Operate the hand crane, lift the first standard section by the self-install suspension shaft, and lay it down from the suspension coop and install on the basic section of the base, fix the standard section with basic section with screw.

4.4.2。操纵手摇起重机，用自装吊杆将第一个标准节吊起，从吊笼上面将标准节徐徐放下，安装到底座基础节上，将标准节与基础节用螺栓固定。

Based on the design and calculation methods for common tight joint bolt, which is subjected to the changing load, a design and calculation methods for flexible bolt is given.

在普通承受交变载荷紧螺栓连接设计计算方法的基础上，给出了采用柔性螺栓的设计计算方法和公式，并以某型柴油机气缸盖螺栓为例，进行了改用柔性缸盖螺栓的设计计算。

On the basis of the former researches and taking into account the practice of our country, this paper take the low period repeat loading experiment for three rigid conjunction node of steel beam and concrete wall, researching their load-bearing capacity and earthquake resistance performance under the low period repeat loading action, the main content concentrate on the following aspects:(1) Analyzing the three joint's damage shape、hysteretic curve、change of rigidity、yielding load、limit load、damage load、durability、energy dissipation capacity、the strain of the key position and the moment transferring mechanism.(2) Comparing the joint's load-bearing capacity and earthquake resistance performance among the joints with different stud bolt diameter and different connection plate thickness, researching some factor's influence on the work performance of the joint such as the high and strong stud bolt specification、connection plate thickness .

本文在前人研究的基础上，结合我国的实际情况，对3个钢梁-混凝土墙刚接节点试件进行了低周反复荷载试验，对其在低周反复荷载作用下的承载力和抗震性能进行了研究，内容主要集中在以下几个方面：(1)对3个节点试件在低周反复荷载作用下的破坏形态、滞回曲线特性、刚度变化、屈服荷载、极限荷载、破坏荷载、延性性能、耗能能力、关键部位的应变分布情况及节点核心区的受力情况进行了试验研究和理论分析；(2)比较了不同螺栓规格和不同连接板厚度的节点试件的承载力和抗震性能，研究了高强螺栓规格和连接板厚度这2个因素对节点工作性能的影响；(3)介绍了光纤光栅传感技术在土木工程领域中的应用研究现状及其基本原理；并通过对比试验，探讨了光纤光栅传感器用于土木工程检测的可行性及实现途径。

The hoisting machine can fix on the concrete or on the machine framework. The foundation bolt must be equipped with lock instrument.

卷扬机安装在混凝土基础上或机架上必须进行找平，地脚螺栓必须用锁紧装置，防止螺栓松动。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。