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<div class="ititle">新闻详细</div> <div class="content"> <h1>遵义声测½Ž¡åŽ‚家介¾lå£°‹¹‹ç®¡å€¾è§’的媄响及处理</h1> <h6>发布旉™—´åQ?019-02-14</h6><h6>来源åQ?a href='http://www.moneysgains.com/news/109.html'>http://www.moneysgains.com/news/109.html</a></h6> <div class="detail" id="zoom"><p><span style="font-family:SimSun;font-size:16px;">遵义<a href="/scg/" target="_blank">声测½Ž?/a>厂家介绍声测½Ž¡å€¾è§’的媄响及处理åQ?/span><span style="font-family:SimSun;font-size:16px;">ä¸ÞZº†ä¸åª„响工½E‹ä¸­æ¡©åŸºè´¨é‡çš„判断,往往要求水åã^安装‹¹‹å£°½Ž¡ã€‚但ç”׃ºŽæ–½å·¥˜q‡ç¨‹ä¸­çš„误差åQŒç»å¸æ€¼šå‡ºçŽ°‹¹‹å£°½Ž¡å¸ƒ¾|®ä¸å‡åŒ€çš„情å†üc€‚测声管的非òqŒ™¡Œå¸ƒç½®ç›´æŽ¥åæ˜ åœ¨ç®¡é—´è·çš„变化上</span><br /> <span style="font-family:SimSun;font-size:16px;">‹¹‹å£°½Ž¡å€¾è§’的媄响及处理</span><br /> <span style="font-family:SimSun;font-size:16px;">ä¸ÞZº†ä¸åª„响工½E‹ä¸­æ¡©åŸºè´¨é‡çš„判断,往往要求水åã^安装‹¹‹å£°½Ž¡ã€‚但ç”׃ºŽæ–½å·¥˜q‡ç¨‹ä¸­çš„误差åQŒç»å¸æ€¼šå‡ºçŽ°‹¹‹å£°½Ž¡å¸ƒ¾|®ä¸å‡åŒ€çš„情å†üc€‚测声管的非òqŒ™¡Œå¸ƒç½®ç›´æŽ¥åæ˜ åœ¨ç®¡é—´è·çš„变化上</span><br /> <span style="font-family:SimSun;font-size:16px;">在工½E?ä¸ÞZº†ä¸åª„响桩基础桩èín质量的判æ–?往往声学‹‚€‹¹‹GuanPing¾U¿å®‰è£…要æ±?但由于施工过½E‹çš„声学‹‚€‹¹‹ç®¡å¤ÞpÓ|往往会出çŽîC¸€äº›è£…修无法匹敌的,声测½Ž¡å®‰æŽ’不òqŒ™¡Œç›´æŽ¥½Ž¡é—´è·çš„变化的性能,和管间距的变化直接导致了波速的变化,无法准确判断¾l“果。测声管不均匀的原因如ä¸?</span><br /> <span style="font-family:SimSun;font-size:16px;">(1)ž®†æµ‹å£°ç®¡¾pÕdœ¨é’¢ç­‹½W¼å†…æ—Óž¼Œæ”„¡½®æ—¶ä¸‰ã€å››æ ÒŽµ‹å£°ç®¡æœªæ”¾¾|®æˆ½{‰è¾¹ä¸‰è§’形或正方形ã€?/span><br /> <span style="font-family:SimSun;font-size:16px;">(2)因äؓ声音‹¹‹é‡½Ž¡çš„长度是有限的,通常æ˜?¾c?而桩长度通常­‘…过10¾c?有的几十¾c?需要良好的‹¹‹é‡½Ž¡çš„˜qžæŽ¥,因äؓ在声音的˜qžæŽ¥å·¥ä½œ‹¹‹é‡½Ž?声音‹¹‹é‡½Ž¡ä¸ç›?˜q™å£°éŸÏxµ‹é‡ç®¡å€¾æ–œã€?/span><br /> <span style="font-family:SimSun;font-size:16px;">(3)机械钻进或手工钻˜q›æ—¶åQŒç”±äºŽé’»˜q›ä¸æ˜¯åž‚ç›´çš„åQŒå½“钢笼吊下时发生弯æ›ÔŒ¼Œå¯ÆD‡´å£°ç®¡å¼¯æ›²ã€?/span><br /> <span style="font-family:SimSun;font-size:16px;">(4)声测½Ž¡ç»‘扎时åQŒç”±äºŽç»‘扎不牢固或声‹¹‹ç®¡½Ž¡å£å¾ˆè–„åQŒåœ¨çŒæµ†˜q‡ç¨‹ä¸­å—到冲å‡ÖM½œç”¨ï¼Œå£°æµ‹½Ž¡å—到挤压弯曌Ӏ‚声½Ž¡å€¾è§’å¯ÒŽ¡©íw«æ؜凝土¾~ºé™·¼‹®å®šçš„媄å“?/span><br /> <span style="font-family:SimSun;font-size:16px;">‹¹‹å£°½Ž¡å‘生弯曲和倾斜åQŒå¯èƒ½ä‹É½Ž¡é—´è·å˜ž®æˆ–增大。管间距¼›»è¶Šž®ï¼Œç”׃ºŽä¼ æ’­è·ç¦»­‘ŠçŸ­åQŒæµ‹é‡åˆ°çš„声韌™¶Šž®ï¼Œè®¡ç®—出的声速也­‘Šå¤§ã€‚当½Ž¡é—´è·ç¦»å¢žå¤§æ—Óž¼Œç”׃ºŽä¼ æ’­è·ç¦»çš„增大,所‹¹‹å£°é‡å¢žå¤§ï¼Œè®¡ç®—声速变ž®ã€‚这两种¾l“果都会使åã^均声速偏¼›»è¶…声在混凝土中传播速度的正常å€û|¼Œä¸”偏差较大。如果我们还采用声速值判据的æ–ÒŽ³•æ¥åˆ¤æ–­æ¡©åŸºæ¡©íw«çš„混凝土质量,可能会出çŽîC»¥ä¸‹æƒ…况,声管¾l™å·¥½E‹åŸ‹ä¸‹äº†ä¸¥é‡çš„隐æ‚?</span><br /> <span style="font-family:SimSun;font-size:16px;">假阴æ€?(1)声学‹‚€‹¹‹ç®¡¾~ºé™·é™„è¿‘æ—?­‘…声波在混凝土中的传播过½E‹ä¸­,如果½Ž¡é—´è·?‹¹‹é‡äº†å…¬å…ä­h值变得小,å¯ÆD‡´è®¡ç®—速度值成为大声速值可以大于桩¾~ºé™·æ¡©èín的实际情冉|µ‹é‡é€Ÿåº¦å€?¾lˆé€Ÿåº¦‹¹‹é‡å€¼å¯èƒ½å¤§äºŽæˆ–½{‰äºŽä¸´ç•Œé€Ÿåº¦å€?让äh觉得正常而äñ”生假阴性的现象ã€?/span><br /> <span style="font-family:SimSun;font-size:16px;">(2)误判:当声éŸÏxµ‹é‡ç®¡äº§ç”Ÿå¼¯æ›²çŽ°è±¡,声音‹¹‹é‡½Ž¡å¼¯æ›²å¯¼è‡´å£°éŸÏxµ‹é‡ç®¡çš„距¼›Õd˜å¤?‹¹‹é‡çš„声韛_˜å¾—æ›´å¤?旉™—´ä»·å€ÆD®¡½Ž—声速值变得越来越ž®?声速值后成äؓž®å¯èƒ½å°äºŽäÍ界声速å€?那么它将被视为æ؜凝土¾~ºé™·å’Œå‘çŽ?å¯ÆD‡´è¯¯åˆ¤ã€?/span><br /> <p> <span style="font-family:SimSun;font-size:16px;">(3)è½Õdˆ¤:弯头的声学检‹¹‹ç¼ºé™äh—¶,¾~ºé™·å¯ä»¥å‡å°‘声速å€?但也可能是由于声波探‹¹‹ç®¡å¼¯æ›²,使较ž®çš„距离,距离变小使得混凝土的­‘…声波的传播旉™—´ž®?计算速度较大,计算声速å€ÆD¾ƒå¤§çš„一部分ž®†æŠµæ¶ˆç”±¾~ºé™·å¼•è“v的低速度倹{€‚虽然我们可以根据声速判据判断测量点为异常点åQŒä½†ç”׃ºŽå˜åŒ–òq…度˜qœå°äºŽå®žé™…声速降低的原因åQŒå¯ä»¥åˆ¤æ–­äؓ较小的缺陗÷€?/span> </p> <p> <span style="font-family:SimSun;font-size:16px;"><img src="http://cmsimgshow.zhuchao.cc/24543/20151223114600.jpg?path=www.moneysgains.com/uploads/cp/20151223114600.jpg" alt="贵州声测½Ž? /><br /> </span> </p></p><p><div>上一æ?<a href="110.html">贵州声测½Ž¡ï¼šå£°æµ‹½Ž¡è¿žè½§ç®¡å·¥è‰ºè°ƒæ•´</a></div> <div>下一æ?<a href="108.html">遵义锚具åQšé”šå…ïLš„主要分类</a></div> </p> <div class="tag">相关标签åQ?a href='/key.aspx?k=%d7%f1%d2%e5%c9%f9%b2%e2%b9%dc%a3%ba'>遵义声测½Ž¡ï¼š</a>,</div> </div> </div> <div class="ititle_b">相关新闻</div> <div class="pinglist"> <ul> <li><a href="/news/109.html">遵义声测½Ž¡åŽ‚家介¾lå£°‹¹‹ç®¡å€¾è§’的媄响及处理</a></li> </ul> </div> <div class="ititle_b">相关产品</div> <div class="c_product_b"> 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