英语高手请指教2

显示全部楼层 · 2009-4-1 20:04:15

2. Simple joints to tubular columns using flowdrill connectors
Flowdrilling was initially limited to mechanical applications until Sherman investigated
the use of the process for structural steelwork joints, with investigations of
both the micro-structure [3] of the thread and the bolted endplate connection [4].
The findings by Sherman were promising, suggesting that the bolts could be used
with tubular columns. Further work by Banks [5,6] and Ballerini et al. [7,8] extensively
investigated the performance of the connectors and showed them capable of
withstanding the design tensile capacity of the bolt.
Whilst simple connections in steelwork frames are designed to resist only shear
loads they also possess both bending strength and rotational stiffness. For satisfactory
performance, simple connections must be ductile. The purpose of the tests undertaken
and reported herein was to investigate the strength and rotational stiffness characteristics
of these joints. To help in the selection of practical member sizes for the joint
tests, an economic study [9] was completed on typical buildings that may employ
the flowdrill system. It was found that the 200 serial size of SHS column member
would be suitable for many of the columns in a multi-storey frame of modest height,
typical of frames built in the UK. The decision was taken to adopt the 200 section
as this particular serial size also provided a large variation of tube wall thickness
for the tests. It was also decided to adopt the 356 UB as the benchmark serial beam
size. The 356 UB serial size was partly based on the study but was also influenced
by the practical limitations of the testing apparatus.

千问 · 2009-4-1 20:04:15

Flowdrilling被局限在机械应用到谢尔曼调查使用过程中,为钢结构节点的调查[3]的微观结构的线和螺栓终板连接[4]。结果是有前途的,由谢尔曼暗示,螺栓都可以使用与管栏目。进一步的工作,由银行[5,6]和Ballerini[7,8]缪群。广泛性能的研究,并把它们的连接器承受拉伸能力设计的螺栓。虽然简单钢框架连接在一起是为了抵御只有剪切他们也具有荷载作用下的弯曲强度和转动刚度。满意,性能、简单的连接必须韧性。测试的目的本报告是探讨其力量和转动刚度特性这些关节。帮助选择切合实际的成员的大小测试、一种经济研究[9]就完成了对有代表性的建筑物可能使用这...