Dtu 22 - 1 . building works . private contracts . exterior cladding using large prefabricated panels of the solid or ribbed slab type or ordinary concrete . part 2 : special clauses Dtu 22 - 1 .建筑工程.专门合同.外部覆盖层为大型预制板或肋板或普通水泥预制板.第2部分:特别条款
Dtu 22 - 1 . building works . exterior cladding using large prefabricated panels of the solid or ribbed slab type or ordinary concrete . part 1 : technical specifications - part 2 : special clauses Dtu 22 - 1 .建筑工程.用大型实心或密肋板或普通水泥的预制板做成的外部覆面板.第1部分:技术规范.第2部分:特殊规定
The genetic algorithm approach is used in this study to search for the optimal design values of pillar , deck stiffened panels , transverse web frames , flexible structures and side shell stiffened plates 在最佳化分析中采用基因演算法以随机搜寻方式寻找出汽车运送船上各层甲板中之支柱、加强肋板架、横向肋骨、侧板板架以及挠性结构的最佳化之设计尺寸。
In the paper , the latticed shell of double - layer hyperbolic pyramid is vertically applied to the structure of cooling tower and reinforced concrete planks with ribs are put up around the latticed shell , in accordance with situation that the most latticed shells are applied to lateral roof and cooling tower is put up by the reinforced concrete structure , a kind of new construction that includes the lower reinforced concrete structure and the upper latticed shell structure is established 本论文把双层双曲线四角锥网壳结构竖向应用于冷却塔的筒壁，在网壳的周围挂钢筋混凝土带肋板。由于目前大多数网壳结构都水平应用于屋盖或楼盖结构和冷却塔筒壁大多数采用钢筋混凝土结构，本文的研究形成了一种上部网壳结构下部钢筋混凝土结构的新型结构。
2 based on experimental results and finite elements analysis of new joint , the stress transfer mechanism of the new joint is analyzed . there are two stress transfer patterns about the new joint , one is for rectangular steel tubular column joint , its stress transfer pattern is that beam moment is transferred to column webs mainly by stiffeners , the other is for crft column joint , its stress transfer pattern is that part of beam moment is transferred from stiffeners to column webs , another part of beam moment is transferred to infilled concrete by column flange (二)基于新型节点的试验结果和有限元分析，研究了新型节点的传力机理，其应力的传递路径分为两种：对于钢管柱节点，梁端弯矩主要通过加劲肋板直接传至柱腹板，对于钢管混凝土柱节点，梁端弯矩一部分通过加劲肋传给柱腹板，另一部分通过柱翼缘传给钢管内的混凝土。
Abstract : experimental researches on normal section ultimate fle xural strength of prestressed reverse - rib - slab with excessive steel bar were m ade , and according to chinese norm ( gbj10 - 89 ) and american norm ( aci ) in which s train harmony analysis method was adopted , its ultimate strength was calculated , these make us further realizse the ultimate flexural strength of prestressed r everse - rib - slab with excessive steel bar 文摘:通过叠合结构中预应力超筋倒肋薄板正截面极限承载力的试验研究，分别采用规范gbj10 - 89中的受弯构件、偏心受压构件的计算公式及美国aci规范中的应变协调分析方法计算了极限承载力，从而更清楚地认识了配有高强钢丝的超筋倒肋板的极限承载力计算问题。
Reasons : firstly , sectional dimension is so little that torsional stiffness of single - beam is n ' t enough . secondly , protective layer thickness is too thin to protect concrete reinforced bar and reduce durability . lastly , each main beam is joined by cross girder and the more rigid of cross girder the more entirety of bridge 桥梁局部损坏较严重，主要原因是主梁截面尺寸过小、肋板过于薄弱，造成单梁抗扭刚度不足；保护层厚度不够导致钢筋外露引起锈蚀，降低了桥梁的耐久性；各主梁采用横隔梁连接成整体，横隔梁的刚度越大，桥梁的整体性越好，但调查结果显示，实际情况中并不能达到理想的整体刚度。
