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style="color:#E53333;">æ··å‡åœ?/span>中äñ”生裂¾~有多ç§åŽŸå› åQŒä¸»è¦æ˜¯æ¸©åº¦å’Œæ¹¿åº¦çš„å˜åŒ–åQ?span style="color:#E53333;">æ··å‡åœ?/span>的脆性和ä¸å‡åŒ€æ€§ï¼Œä»¥åоl“æž„ä¸åˆ</span><span style="font-size:16px;">ç†ï¼ŒåŽŸææ–™ä¸åˆæ ¼åQˆå¦‚¼„±éª¨æ–™å应)åQŒæ¨¡æ¿å˜å½¢ï¼ŒåŸºç¡€ä¸å‡åŒ€æ²‰é™½{‰ã€?/span><br /> <span style="font-size:16px;">  <span style="color:#E53333;">æ··å‡åœ?/span>¼‹¬åŒ–期间水惔攑ևºå¤§é‡æ°´åŒ–çƒ­ï¼Œå†…éƒ¨æ¸©åº¦ä¸æ–­ä¸Šå‡åQŒåœ¨è¡¨é¢å¼•è“væ‹‰åº”åŠ›ã€‚åŽæœŸåœ¨é™æ¸©˜q‡ç¨‹ä¸­ï¼Œ</span><span style="font-size:16px;">ç”׃ºŽå—到基础或è€?span style="color:#E53333;">æ··å‡ä¸?/span>的约æŸï¼Œåˆä¼šåœ?span style="color:#E53333;">æ··å‡åœ?/span>内部出现拉应力。气温的é™ä½Žä¹Ÿä¼šåœ?span style="color:#E53333;">æ··å‡åœ?/span>表é¢å¼•è“v很大</span><span style="font-size:16px;">的拉应力。当˜q™äº›æ‹‰åº”力超å‡?span style="color:#E53333;">æ··å‡åœ?/span>的抗裂能力时åQŒå³ä¼šå‡ºçŽ°è£‚¾~ã€?/span><br /> <span style="font-size:16px;">  许多<span style="color:#E53333;">æ··å‡åœ?/span>的内部湿度å˜åŒ–很ž®æˆ–å˜åŒ–较慢åQŒä½†è¡¨é¢æ¹¿åº¦å¯èƒ½å˜åŒ–较大或å‘生剧烈å˜åŒ–。如å…ÀLФä¸å‘¨</span><span style="font-size:16px;">ã€æ—¶òq²æ—¶æ¹¿ï¼Œè¡¨é¢òq²ç¾ƒå½¢å˜å—到内部<span style="color:#E53333;">æ··å‡åœ?/span>的约æŸï¼Œä¹Ÿå¾€å¾€å¯ÆD‡´è£‚ç¼ã€?span style="color:#E53333;">æ··å‡åœ?/span>是一¿Uè„†æ€§ææ–™ï¼ŒæŠ—拉强度</span><span style="font-size:16px;">是抗压强度的1/10å·¦å³åQŒçŸ­æœŸåŠ èäh—¶çš„æžé™æ‹‰ä¼¸å˜å½¢åªæœ‰ï¼ˆ0.6ï½?.0åQ‰Ã?04åQŒé•¿æœŸåŠ èäh—¶çš„æžé™ä½ä¼¸å˜</span><span style="font-size:16px;">å½¢ä¹Ÿåªæœ‰åQ?.2ï½?.0åQ‰Ã?04.ç”׃ºŽåŽŸææ–™ä¸å‡åŒ€åQŒæ°´ç°æ¯”ä¸ç¨³å®šï¼ŒåŠè¿è¾“å’Œ‹¹‡ç­‘˜q‡ç¨‹ä¸­çš„¼›ÀLžçŽ°è±¡åQŒåœ¨å?/span><span style="font-size:16px;">一å?span style="color:#E53333;">æ··å‡åœ?/span>ä¸­å…¶æŠ—æ‹‰å¼ºåº¦åˆæ˜¯ä¸å‡åŒ€çš„,存在ç€è®¸å¤šæŠ—拉能力很低åQŒæ˜“于出现裂¾~的薄弱部ä½ã€‚在钢筋<span style="color:#E53333;">æ·?/span></span><span style="font-size:16px;"><span style="color:#E53333;">å‡åœŸ</span>ä¸­ï¼Œæ‹‰åº”åŠ›ä¸»è¦æ˜¯ç”±é’¢½{‹æ‰¿æ‹…,<span style="color:#E53333;">æ··å‡åœ?/span>åªæ˜¯æ‰¿å—压应力ã€?/span><br /> <span style="font-size:16px;">  在素<span style="color:#E53333;">æ··å‡åœ?/span>内或钢筋<span style="color:#E53333;">æ··å‡ä¸?/span>的边¾~˜éƒ¨ä½å¦‚果结构内出现了拉应力åQŒåˆ™™åÖM¾é?span style="color:#E53333;">æ··å‡åœ?/span>自èín承担。一般设</span><span style="font-size:16px;">计中å‡è¦æ±‚ä¸å‡ºçŽ°æ‹‰åº”åŠ›æˆ–è€…åªå‡ºçŽ°å¾ˆå°çš„æ‹‰åº”力。但是在施工ä¸?span style="color:#E53333;">æ··å‡åœ?/span>由最高温度冷å´åˆ°˜qè{时期的稳</span><span style="font-size:16px;">定温度,往往åœ?span style="color:#E53333;">æ··å‡åœ?/span>内部引è“v相当大的拉应力。有时温度应力寭‘…过其它外è·è½½æ‰€å¼•è“v的应力,因此æŽ?/span><span style="font-size:16px;">æ¡æ¸©åº¦åº”力的å˜åŒ–规律对于˜q›è¡Œåˆç†çš„结构设计和施工æžäØ“é‡è¦ã€?/span><br /> <span style="font-size:16px;">      “科å®UB牌â€ç³»åˆ—äñ”å“凭借具有徽{‘ææ–™é¢†åŸŸçš„¿U‘技开å‘优势,产å“在国内外建筑行业òq¿æ³›ä½¿ç”¨åQŒå¸‚</span><span style="font-size:16px;">åœºå æœ‰çއå‡å±…行业å‰åˆ—åQŒå…·æœ‰ä¸€å®šçš„知å度和影å“力,造就新行业å“牌,产å“销往于中山ã€ç ‹¹—÷€ç•ª¼›ºã€?/span><span style="font-size:16px;">òq¿å·žã€ä½›å±±ã€æ·±åœŸë€ä¸œèŽžã€æ±Ÿé—¨ç­‰ç ä¸‰è§’地区åŠå‘¨è¾¹åŸŽå¸‚乃至全国地区ã€?/span><br /> <span style="font-size:16px;">      ¿U‘å®åQŒåœ¨å¸‚场风雨中å‰è¡Œï¼Œä»¥æ¾Žæ¹ƒçš„æ°”势åQŒä¸æŠ˜ä¸é¥¶çš„¾_„¡¥žåQŒæ‰“造å“牌化é“èµ\åQŒç”¨æˆ‘们的专业知识与</span><span style="font-size:16px;">技术,¿U‰æ‰¿ä¼ä¸šä¸€è´¯çš„创造å“质精¼œžï¼Œä¸ºå¹¿å¤§å®¢æˆäh供真诚æœåŠ¡ï¼Œå…±åˆ›æ–°çš„è¾‰ç…ŒåQ?/span><br /> <p style="color:#f000"><div>上一æ?<a href="188.html">凿°´å‰‚厂家科å®ç‰¹¿Uå¾æåŽ‚å‘Šè¯‰æ‚¨ç Œä½“è£‚¾~çš„¾cÕdž‹åŠåŽŸå› æœ‰å“ªäº›</a></div> <div>下一æ?<a href="186.html">凿°´å‰‚厂家科å®ç‰¹¿Uå¾æåŽ‚å‘Šè¯‰æ‚¨ç –æ·ïL»“构的建筑特点有哪äº?/a></div> </p></div> <div class="clear"></div> <div class="tag">相关标签:<a href='/key.aspx?k=%e7%89%b9%e7%a7%8d%e5%bb%ba%e6%9d%90%e3%80%81%e5%87%8f%e6%b0%b4%e5%89%82%e5%8e%82%e5%ae%b6%e3%80%81%e9%98%b2%e6%b0%b4%e6%9d%90%e6%96%99%e4%be%9b%e5%ba%94%e5%95%86'>特ç§å»ºæã€å‡æ°´å‰‚厂家ã€é˜²æ°´ææ–™ä¾›åº”商</a>,</div> <div class="title4">相关新闻<b></b></div> <div class="newslist"> <ul> <li><a href="/news/218.html" 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