国产成人精品AV,97成人做爰A片免费看网站,一级a性色生活片久久无,西西4ww大尺无码视频

 鍍鋅格柵板承載力為什么？如何知道安全承載力的多少？為客戶更好的提供哪一種格柵板扁鋼？

客戶問：溝寬1500mm過4噸的車用什么規(guī)格的扁鋼？

客戶問：跨度2000mm經(jīng)過10車用什么規(guī)格的扁鋼？

客戶又問：溝寬50公分用30*3mm扁鋼做格柵板能過5噸的車嗎？

鍍鋅格柵板廠家采集整理資料貢獻給大家，最安全的條件下采購熱鍍鋅鋼格柵板，以免發(fā)生意外。

承載力圖表中    C 為中心承載力(1千牛為單位）

                     U為均布承載力（1千牛為單位）

                     D為格柵板受外力的撓度(單位為毫米）

     荷載表的數(shù)值計算基于靜止荷載的材料強度設(shè)計值(對于碳素結(jié)構(gòu)鋼，強度設(shè)計值取170×10³ KN/m²)，包括考慮了鋼格板的重量。

    當(dāng)設(shè)計用于交通道路上的鋼格板時，還應(yīng)考慮沖擊和疲勞的因素。

   荷載表的數(shù)值計算根據(jù)承載扁鋼的公稱尺寸進行的，如果承載扁鋼是負公差，應(yīng)當(dāng)考慮一個折減系數(shù)。同樣，

 

   承載扁鋼由于沖齒開孔開槽等造成截面尺寸的變化，都應(yīng)當(dāng)考慮折減

 

                                                                                                                                                 圖表1

                                                                                                                             圖表2

                                                                                                 圖表3

                                                                                              圖表4

                                                                                                   圖表5

                                                                                           圖表6

                                                                                               圖表7

                                                                                               圖表8

                                                                                                 圖表9

                                                                                       圖表10

                                                                                            圖表11

                                                                                               圖表12

                                                                                             圖表13

                                                                                            圖表14

                                                                                             圖表15

                                                                                             圖表16

 

 承載力圖表1000牛=100公斤大約     那么291.9千牛=29.19噸    

U為平均承載

C為中心承載

隆盛鋼格板廠家收集此圖只為客戶與同行業(yè)查詢使用