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公司基本資料信息
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mso-hansi-font-family:"Times New Roman"">一、概述:????
1、YZS-3 mso-hansi-font-family:"Times New Roman"">型重型液壓動力觸探儀是我廠在ZDT- "Times New Roman"">Ⅱ型重型電動動力觸探儀的基礎上改進的新型產(chǎn)品,它除了有電動產(chǎn)品能解決人工操作中慢、累、用人多的缺點外,又解決了由于野外作業(yè)缺少電源和接電不方便的問題,在機械方面我們保證穿心錘的質(zhì)量(65.3kg mso-hansi-font-family:"Times New Roman"">)和落距(760mm "Times New Roman"">)的準確性。
2、速度:18 mso-hansi-font-family:"Times New Roman"">擊/ "Times New Roman"">分+3擊。
3、總質(zhì)量:500kg mso-hansi-font-family:"Times New Roman"">(含附件)
mso-hansi-font-family:"Times New Roman"">二、全自動液壓重型動力觸探儀開箱試機及使用:
1、先將儀器放置地面較平處將其放穩(wěn)調(diào)平。
?2 "Times New Roman"">、發(fā)動汽油機,先讓汽油機空轉(zhuǎn)1-2 "Times New Roman"">分鐘,這時向上搬動手動閥門將擊錘架子升起來,升到可以將探桿接上即可,不易升的太高。(上探桿前一定要先上好安全擋桿)
3、升起后將有探頭的探桿裝在擊錘架下的套孔內(nèi),上第一根探桿時主架子底下要裝上將探桿找正居中的角鐵,對好后,先將安全擋桿取下,向下搬動手動閥門將擊錘架慢慢落下接好后。還要讓提擊錘架子的升降油缸繼續(xù)下降到底才可工作,再將讓探桿找正居中的角鐵去掉。
4、由于本機是以汽油機為主動力,以液壓機為傳動動力,所以本機沒有計數(shù)和自動停機功能,擊到所需錘擊數(shù)后,要人工停機
5、打下第一根探桿后,再按上面的步驟將擊錘架子升起來,上好第二根探桿,重復上面步驟工作即可。
mso-hansi-font-family:"Times New Roman"">三、類別及規(guī)格:
1、輕型:
mso-hansi-font-family:"Times New Roman"">錘重:10kg
mso-hansi-font-family:"Times New Roman"">落距:500mm
mso-hansi-font-family:"Times New Roman"">探頭:圓錐頭錐度60 "Times New Roman"">,椎體直徑40
mso-hansi-font-family:"Times New Roman"">貫入指示:Np "Times New Roman"">貫入30mm的錘擊數(shù)
mso-hansi-font-family:"Times New Roman"">觸探桿外徑:25mm
2、重型:
mso-hansi-font-family:"Times New Roman"">錘重:63.5kg
mso-hansi-font-family:"Times New Roman"">落距:760mm
mso-hansi-font-family:"Times New Roman"">探頭:圓錐頭錐度60 "Times New Roman"">,椎體直徑74
mso-hansi-font-family:"Times New Roman"">貫入指示:Np "Times New Roman"">貫入10mm的錘擊數(shù)
mso-hansi-font-family:"Times New Roman"">觸探桿外徑:42mm
3、超重型:
mso-hansi-font-family:"Times New Roman"">錘重:120kg
mso-hansi-font-family:"Times New Roman"">落距:1000mm
mso-hansi-font-family:"Times New Roman"">探頭:圓錐頭錐度60 "Times New Roman"">,椎體直徑74
mso-hansi-font-family:"Times New Roman"">貫入指示:Np "Times New Roman"">貫入10mm的錘擊數(shù)
mso-hansi-font-family:"Times New Roman"">觸探桿外徑:42mm-63mm
mso-hansi-font-family:"Times New Roman"">四、全自動液壓重型動力觸探儀試驗程序:
1、貫入前, mso-hansi-font-family:"Times New Roman"">觸探架安放平穩(wěn), "Times New Roman"">保持觸探孔垂直。
2、貫入時,使穿心錘自由下落距為76 cm, mso-hansi-font-family:"Times New Roman"">并及時記錄貫入深度并記錄每貫入10 cm mso-hansi-font-family:"Times New Roman"">的實測擊數(shù)N "Times New Roman"">。
3、當觸探桿長度L>2 m時錘擊數(shù)按下式進行校正:
N63.5=d·N mso-hansi-font-family:"Times New Roman"">(1 "Times New Roman"">)
mso-hansi-font-family:"Times New Roman"">式中:N63.5 "Times New Roman"">為重型動力觸探儀試驗錘擊數(shù);d "Times New Roman"">為
mso-hansi-font-family:"Times New Roman"">觸探桿長度校正系數(shù), "Times New Roman"">按表1確定。
? "Times New Roman"">對地下水位以下的中粗礫砂和圓礫、卵石錘擊數(shù)按下式進行修正。
N63.5=1.1N′63.5+1.0 (2 mso-hansi-font-family:"Times New Roman"">)
mso-hansi-font-family:"Times New Roman"">式中:N "Times New Roman"">′63.5為觸探桿長度校正后錘擊數(shù)。
4、指標的應用: mso-hansi-font-family:"Times New Roman"">根據(jù)重型動力觸探錘擊數(shù)按表2 "Times New Roman"">確定容許承載力。
mso-hansi-font-family:"Times New Roman"">五、全自動液壓重型動力觸探儀數(shù)據(jù)分析:
mso-hansi-font-family:"Times New Roman"">在承載板檢測地基承載力的實驗點附近,我們采用重型動力觸探儀對地基承載力進行了檢測,通過對數(shù)據(jù)分析,得到每進尺10 cm mso-hansi-font-family:"Times New Roman"">與錘擊數(shù)的關系圖1 "Times New Roman"">, 每進尺10 cm mso-hansi-font-family:"Times New Roman"">與錘擊數(shù)的關系根據(jù)承載板法測試的中粗砂地基承載力, mso-hansi-font-family:"Times New Roman"">并與重型觸探儀實際測試結(jié)果進行比較,按錘擊16 mso-hansi-font-family:"Times New Roman"">次進尺60 cm "Times New Roman"">時,地基承載力為0.3 MPa "Times New Roman"">,此時每10 cm "Times New Roman"">進尺需錘擊4~6 "Times New Roman"">次,公式為:
[δ]= mso-hansi-font-family:"Times New Roman"">ξ×(6 "Times New Roman"">次/10 cm "Times New Roman"">) (3 mso-hansi-font-family:"Times New Roman"">)
mso-hansi-font-family:"Times New Roman"">δ= "Times New Roman"">ξ×(N次/10 cm mso-hansi-font-family:"Times New Roman"">) (4 mso-hansi-font-family:"Times New Roman"">)
mso-hansi-font-family:"Times New Roman"">式中:[ "Times New Roman"">δ]為實際地基承載力0.3 MPa;ξ為比例系數(shù), mso-hansi-font-family:"Times New Roman"">與中粗砂的含水量、細度模數(shù)等有關; mso-hansi-font-family:"Times New Roman"">δ為實測地基承載力;N "Times New Roman"">為每進尺10 cm "Times New Roman"">的錘擊數(shù)。因地基土上部擾動破壞,地基承載力變化較大,統(tǒng)計每10 cm "Times New Roman"">進尺深度時,應去掉前6 mso-hansi-font-family:"Times New Roman"">次錘擊數(shù),從第7 "Times New Roman"">次開始算起,累計進尺深度不小于60 cm mso-hansi-font-family:"Times New Roman"">(包括前6 "Times New Roman"">次進尺深度)。根據(jù)實驗數(shù)據(jù)分析,總結(jié)重型動力觸探試驗錘擊數(shù)與中粗砂地基承載力對應見表3 mso-hansi-font-family:"Times New Roman"">。