钢管混凝土柱防火涂料厚度

1、钢管混凝土柱防火涂料厚度1、当圆形截面钢管混凝土柱保护层采用非膨胀型防火涂料时，其厚度可按表8.确定。表圆形截面钢管混凝土柱非膨胀型防火涂料保护层厚度m形鼓面直位 (mm)用火极限(h)保护层摩度A=2OA = 40计60A=801. O68IO131. 581113172002.0101317212. 5121620253.0141823301. 0679121. 581013163002.091216202. 5111419243. O131722281.0579121. 57912164002. O91115192. 5101418233.0121621271. o579111. 579

2、12155002. O81114192. 5IO1317233.0121520261.0568111. 56811156002. O-811.14182. 5913 *17223.0111519261.0568111. 56811157002. 081014182. 591216223.0111429251.0S68111. 56811148002.0710131A2.591216213.0101419251. O46R111. 568IO149002. O7IO131H2. 591216213. 0IO1418251.0468101. 568101410002. 07913172. 5811

3、16213.0101318241.0468101. 567IO1411002. 07913172. 581115203.01013IS241. 0468101. 557IO141200Z.07912172. 581115203.09121724注：入= 4L/D ,其中L为柱的计算长度，D为柱截面直径。2、当矩形截面钢管混凝土柱保护层采用非膨胀型防火涂料时，其厚度可按表8.确定。表矩形截面钢管混凝土柱非膨胀型防火涂料保妒层厚度电膨0国也力 K寸 (mm初火极限A -20A -40A- 60A-RO1. O989IO1. 5131212142002. O161516192. 5201920233

4、.O242424271. O77781. 511IQIO13002. O141313162. 5171616193. O201920231.076671. 6999114002. O121112142. 5151415173. O181617201. O66671. 5988IO5002. OLXIO11132. 5141313163. O161516181.066561. 587896002. OIO9IO122. 5131212143. O151416171. O55561. 577787002. OIO9911251211I 1133. O141313161. O55561. &7678

5、8002. O989IO2. 511IO1 1133.O131213151. O54551. 576689002. O9a8IO2. 5IOioIO123. O12ii12141.。44451. 5666710002. O88802. 5IO9IO123. O12111 1141. O44461. S66671 1OO2. O87892. 5IO91 13. OIO1 1131. O44451. 5656712002. O877O2. 5999113. O11IO1113注H=24I/D或2回/B,其中L为柱的计算长度.D和B分别为柱截面长边和短边尺寸.3、当圆形截面钢管混凝土柱保护层采用金属

6、网抹M5普通水泥砂浆时，其厚度可按表确定。表圆形截面钢管混凝土柱金属网抹M5普通水泥砂浆保护层厚度阈膨假而宜较用火极限保护区第度4mm)A = 204-40A -60A -801. 0223243511. 5304257682002. 0355168812. 5415878933. 04666891061. O202941501. 5263954673002. O314665802. 5365374923. 04160841041.0182739501. 5243652664002. O294462792. S335072913. O3757811031. O172638491. 522355

7、1665002. O274261792. 5314870903. 03654791021.0162537491. 5213349656002. 0254059 782. 5294668903. O3352771021.0152437491. 5203248657002. O243958782. 5284467893. O3)50761O11. O152436491. 5193148658002. 0233857772. 5274366893.03049741O11.0142335481. S193147649002. O223756772. 5264265as3.02948731001. 01

8、42235481. B1830466410002.O223656772. b254164883. 02847721001. O132234481.51829466411002. 0213555772. 5244063883. O2746711001. O132234481. 51729456412002. 0203454762. 5244062883.027457199注：入=4L/D ,其中L为柱的计算长度，D为柱截面直径。4、当矩形截面钢管混凝土柱保护层采用金属网抹M5普通水泥砂浆时，其厚度可按表确定。表矩形截面钢管混凝土柱金属网抹M5普通水泥砂浆保护层厚度便面取径 尺寸 (mm)的火极限

9、h)保护层*度A -20A -40A-60A-801. 0474951541. 56Z6568712002. 0788185882. 593971011063.01081131181231.0424446481. 5555860633002.0697275792. 5828690943. 0961001051101.0384042441. 5515356584002. 0636669732.5757983873. 08892961011.0363839411. 5475052555002. 0596265682. 5707478823. 0828690951. 0343637391. 5454

10、750526002.0565962652. 5677074783. 078286901.0323436381. 5434547507002.0535659622. 56467717430747882861.0313334361. S414346488002.0515457602. 5616468723.0717579831. 0303233351. 5404244469002. 0495255582. S596266693. 0697276811.0293132341. 53840-434510002.0485053562. 5576064673.0677074781.0283031331.

11、53739424411002.0464952552. 5565962653. O6S*6872761.0272931321. 53638414312002.0454850S32. 5545760643.063677074注以二2闻/D或2L/B,其中L为柱的计算长度D和B分别为柱截面长边和短边尺寸.5、当钢管混凝土柱不采用防火保护措施时,在火灾条件下的荷载比应满足以下要求：Rkr (8.1.5)式中R火灾下钢管混凝土柱的荷载比；k.火灾下钢管混凝土柱承载力影响系数，按表确定。表火灾下钢管混凝土桩承载力系数krA截面直径 或宽度 (mm)受火时间(h)因形戴面柱矩形截面柱0.51.01.52.0

12、2.53.00.51.01.52.02.53.03000.610.410.370. 330. 280.240.430.230. 190. 190.180.17206000.640. 470.450. 420. 400.380.470. 240.220. 220.210. 209000.670. 500. 490.480.470.460.S10. 260. 250. 240. 240. 2312000.710. 520. 520.510.510. 500. 560. 290. 270. 270. 260. 253000. 470. 290.210.140.0600.430. 190.160. H

13、0.110.08406000.520.370.330. 290. 250.210.470. 220.190. 160. 140.119000.570.420.400.380. 360. 340.510. 240. 220. 190. 160.1412000.610.450. 440. 430.420.410. 560. 260. 240. 210.180. 163000. 320. 230.120.01000.430.160. 110. 060.020606000. 400. 330.270.210. 150. 090.470. 180. H0. 090. 0409000.430. 400. 370. 340.310. 280.510.210. 160. 110. 070.0212000.470. 440.420.410. 390. 380. 560. 220.170. 130. 080.043000. 300.160.020000. 370. 120. 070.0100806000. 370.290.Z10.140.0600. 400.150. 090.