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align="center" valign="top" style="padding:0px 10px; border-right:1px solid #dbdbdb;"> <div class="picimg_wj"><img src="http://cmsimgshow.zhuchao.cc/26653/201607281418432472665388750.jpg?path=www.aifeir.com/uploads/cp/201607281418432472665388750.jpg" alt="真空预压" width="230" height="230" onload="imgZoomer(this,230,230)" /></div></td> <td valign="top"> <div class="proct_bg1"> <table width="100%" border="0" cellspacing="1" cellpadding="0"> <tr> <th width="20%">产品名称åQ?/th> <td>真空预压</td> </tr> <tr> <th>产品型号åQ?/th> <td>真空预压</td> </tr> <tr> <th>产品规格åQ?/th> <td>真空预压</td> </tr> <tr> <th>产品品牌åQ?/th> <td>宏宙</td> </tr> <tr> <th>产品ä»äh ¼åQ?/th> <td style="color:#E4393C; font-size:14px;font-family:verdana; font-weight:bold;">åK?/td> </tr> <tr> <th>应用范围åQ?/th> <td></td> </tr> </table> <div style="float:left;width:320px;margin-left:51px; margin-top:53px;"> <a href="/" rel="nofollow" target="_blank" > <img src="/template/NEST60007/images/dinggou.gif"></a> </a> </div> </div> </td> </tr> </table> <div class="xiangxi"> <p style="text-align:center;"> <span style="font-size:16px;line-height:1.5;"> <table style="width:100%;" cellpadding="2" cellspacing="0" border="0" class="ke-zeroborder" bordercolor="#000000"> <tbody> <tr> <td style="text-align:center;"> <img style="max-width:100%;" src="http://cmsimgshow.zhuchao.cc/26653/201608021009243162665396198.jpg" alt="" /><br /> </td> </tr> <tr> <td style="text-align:center;"> <span style="font-size:16px;"><b><a href="http://www.aifeir.com/" target="_blank" style="font-weight:bold">真空预压</a></b></span> </td> </tr> </tbody> </table> </span> </p> <blockquote> <p style="text-align:left;"> <span style="font-size:16px;line-height:1.5;"> <a href="http://www.aifeir.com/zkyy/" target="_blank">真空预压</a><br /> <br /> 一、äñ”品介¾l?br /> <br /> 真空预压法是在需要加固的软土地基表面先铺讄¡ ‚垫层åQŒç„¶åŽåŸ‹è®‘Öž‚直排水管道,用不透气的封闭膜与大气隔¾lï¼Œž®†è–„膜周围埋入土中,通过砂垫层内埋设的吸水管道,用真½Iø™£…¾|®æŽ’气,增加地基的有效应力ã€?br /> <br /> 二、真½Iºé¢„压原理:<br /> <br /> 抽真½IºåŽåQŒå‰åŽåœ°è¡¨ç ‚垫层及纵向排水道内逐渐形成负压åQŒåœŸä½“内部与排水道、垫层之间åŞ成压力差ã€?在这¿UåŽ‹å·®ä½œç”¨ä¸‹åQŒåœŸä½“中的孔隙水不断从排水道排出åQŒåœŸä½“固¾l“ã€?主要反映在以下方面ã€?br /> <br /> )在薄膜上面施加与薄膜内外的压力差相等的负荗÷€?br /> <br /> 2 )åœîC¸‹æ°´ä½ä¸‹é™åQŒé™„加应力相应增加ã€?br /> <br /> )3)ž®é—­æ°”æˆö被排出,土的渗透性提é«?br /> <br /> 预压通过对复盖地面的密封膜下抽真½Iºï¼Œä½¿è†œå†…外产生气压差,使粘土层产生固结压力ã€?也就是说åQŒè¿™æ˜¯åœ¨ä¸æ”¹å˜æ€Õdº”力的情况下,通过减小孔隙水压力来增加有效应力的方法ã€?真空预压和降水预压是在负的超静水压下排水固结的äñ”物,¿UîCؓ负压固结ã€?br /> <br /> 真空预压施工前,必须充分做好施工准备工作åQŒåˆ¶å®šæ–½å·¥æŠ€æœ¯æŽªæ–½ã€?‹‚€æŸ¥æ²™è¢‹ã€èšæ°¯ä¹™çƒ¯è–„膜和中粗砂是否符合技术标准和设计要求åQŒåƈž®†æ£€‹¹‹æŠ¥å‘Šæäº¤ç›‘理工½E‹å¸ˆå®¡æŸ¥æ‰¹å‡†ã€?¾lç›‘理工½E‹å¸ˆæ‰¹å‡†åŽï¼Œ<br /> <br /> 开始真½Iºé¢„压的下一个施工ã€?br /> <br /> 三、真½Iºé¢„压施工工艺流½E‹ï¼š<br /> <br /> ‹¹‹é‡æ”¾æ°´¾U¿ä¸»æ”¯è¿‡æ»¤æŽ’水管é“ø™®¾ä¸Šå±‚砂垫层铺讄¡ ‚面整òqŒ™šæ°¯ä¹™çƒ¯è†œé“ø™®¾å¯†å°æ§½æ–½å·¥æµ‹é‡æ ‡å¿—设¾|®çœŸ½Iºæ܇讄¡½®çœŸç©ºæŽ’气预压固结土层ã€?br /> </span> </p> <span style="font-size:16px;"> <div style="text-align:left;"> <span style="line-height:1.5;"></span> </div> </span><span style="font-size:16px;"> <div style="text-align:left;"> <br /> </div> </span> </blockquote> <div class="tag">发布旉™—´ : 2016/7/21 0:00:00</div> <div class="tag">来源:<a href='http://www.aifeir.com/supply/17.html'>http://www.aifeir.com/supply/17.html</a> </div> <p>上一ä¸?<a href="/supply/18.html">高速公路èÊY基处ç?/a>    ä¸‹ä¸€ä¸?<a href="/supply/16.html">SPB-C型塑料排水带</a></p> <div class="tag">相关标签åQ?a href='/key.aspx?k=%e8%bd%af%e5%9f%ba%e5%a4%84%e7%90%86'>软基处理</a>,<a href='/key.aspx?k=%e7%9c%9f%e7%a9%ba%e9%a2%84%e5%8e%8b%e4%bb%b7%e6%a0%bc'>真空预压ä»äh ¼</a>,<a href='/key.aspx?k=%e7%9c%9f%e7%a9%ba%e9%a2%84%e5%8e%8b%e6%89%b9%e5%8f%91'>真空预压批发</a>,</div> </div> </div> <div class="related">相关工艺</div> <div class="c_product_b" > <dl> <dt><a href="/supply/178.html" rel="nofollow"><img src="http://cmsimgshow.zhuchao.cc/26653/201806161441474652665348385.jpg?path=www.aifeir.com/uploads/cp/201806161441474652665348385.jpg" alt="江苏直接‹¹‹æ·±å¼å¡‘料排水板" /></a></dt> <dd><a href="/supply/178.html" rel="nofollow" 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