滴水試驗(yàn)裝置/垂直滴水試驗(yàn)裝置/滴水試驗(yàn)箱/防水等級(jí)測(cè)試
2、如果穩(wěn)定性小于既定的安全系數(shù)(比如自然工況的1.3,或者降雨工況的1.2),那么就需要對(duì)邊坡進(jìn)行支護(hù),支護(hù)的方法很多,比如抗滑裝設(shè)計(jì),錨索或錨桿支護(hù)設(shè)計(jì),還有就是題主提到的擋土墻設(shè)計(jì)。
對(duì)于這種滑坡性邊坡,我們的穩(wěn)定性分析通常是采用瑞典圓弧法,bishop法,國(guó)內(nèi)規(guī)范里面的傳遞系數(shù)法,還有摩根斯坦等等方法。
在計(jì)算邊坡安全系數(shù)的同時(shí),我們通常還要計(jì)算這個(gè)邊坡的滑坡推力。
清遠(yuǎn)邊坡支護(hù)施工隊(duì)【10年邊坡施工經(jīng)驗(yàn)】 咨詢劉工:139*13925077018-(同微信號(hào))
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廣東鴻建巖土工程有限公司(簡(jiǎn)稱鴻建巖土),擁有地基與基礎(chǔ)工程專業(yè)承包資質(zhì),地質(zhì)災(zāi)害治理工程,市政公用總承包,工程勞務(wù)分包等資質(zhì)。擁有理論和現(xiàn)場(chǎng)經(jīng)驗(yàn)豐富的研發(fā)團(tuán)隊(duì),進(jìn)一步拓寬合作領(lǐng)域,深化合作內(nèi)容,創(chuàng)新合作形式,提升合作層次,實(shí)現(xiàn)優(yōu)勢(shì)互補(bǔ)、資源共享。
兩個(gè)問題,一個(gè)是邊坡設(shè)計(jì),一個(gè)是擋土墻設(shè)計(jì)。這兩個(gè)問題分別是兩個(gè)概念,不能混為一談,可以說邊坡設(shè)計(jì)某種程度上包含了擋土墻設(shè)計(jì)的概念。
首先講邊坡,通俗的說,邊坡可以分為兩種,滑坡性邊坡(即存在潛在滑裂面,或者坡度較陡的大型邊坡),還有就是坡度較小的斜坡,小型邊坡或者一些僅僅算傾斜場(chǎng)地的地形(通常坡腳小于土體內(nèi)摩擦角)。
廣東鴻建巖土工程有限公司持有地基與基礎(chǔ)工程專業(yè)承包貳級(jí)、建筑裝飾裝修工程專業(yè)承包貳級(jí)、建筑工程施工總承包叁級(jí)、市政公用工程施工總承包叁級(jí)、施工勞務(wù)不分等級(jí)等資質(zhì)。經(jīng)過多年的發(fā)展,公司在整體上已經(jīng)形成自己獨(dú)到的業(yè)務(wù)專長(zhǎng)和“”服務(wù)的專業(yè)優(yōu)勢(shì),正逐步發(fā)展成為在巖土工程、防災(zāi)減災(zāi)工程等領(lǐng)域具有較高知名度的綜合性工程公司。
專業(yè)從事:[東莞基坑支護(hù)工程隊(duì) 韶關(guān)錨桿錨索施工隊(duì)伍]
邊坡加固,軟土地基加固,錨桿錨索施工,基坑支護(hù),基坑設(shè)計(jì),地質(zhì)災(zāi)害處理,基坑開挖,深基坑支護(hù)工程,基坑檢測(cè)鑒定,基坑監(jiān)測(cè),邊坡支護(hù),護(hù)坡中空錨桿,護(hù)坡注漿錨桿,護(hù)坡自鉆式錨桿,護(hù)坡自進(jìn)式錨桿,護(hù)坡預(yù)應(yīng)力錨桿,邊坡噴錨支護(hù),軟土路基處理,軟弱地基,地質(zhì)災(zāi)害勘察設(shè)計(jì),地質(zhì)災(zāi)害治理,地質(zhì)災(zāi)害監(jiān)測(cè),地質(zhì)災(zāi)害鑒定等。
圖1 頂管井設(shè)計(jì)簡(jiǎn)圖
3.3
工作井結(jié)構(gòu)計(jì)算工作井井壁主要為環(huán)向受力,井壁后方土體側(cè)壓力按水土合算,頂部地面施工荷載按 10kPa 計(jì)。內(nèi)力分析結(jié)果如圖 2 示。鎖口圈梁及鋼格柵設(shè)計(jì)如圖 3、圖 4 示。
圖 2 工作井荷載及內(nèi)力圖
圖 3 鎖口圈梁配筋圖
圖 4 鋼格柵
4 施工工藝流程及主要技術(shù)要求
4.1 鎖口圈梁
按設(shè)計(jì)標(biāo)高開挖至鎖口圈梁底標(biāo)高后,停止開挖,進(jìn)行鎖口圈梁的綁筋、安設(shè)下部鋼格柵連接筋,澆筑混凝土。圈梁設(shè)計(jì)為倒臺(tái)階樣式,防止向下挖土?xí)r圈梁下沉。待圈梁混凝土強(qiáng)度達(dá)到設(shè)計(jì)強(qiáng)度的 70%以后,先由測(cè)量人員在圈梁上放設(shè)中線和高程控制點(diǎn),經(jīng)復(fù)測(cè)無誤后再繼續(xù)向下挖土施工。
4.2 開挖土方
工作井施工為防止鎖口圈梁下移,應(yīng)采用半斷面開挖,利用另一半土作為支撐,待先挖的這一半噴射混凝土完畢后,再開挖另一半,交替進(jìn)行,每次挖深 0.5~0.8m,直至井底。
開挖時(shí),應(yīng)嚴(yán)格按照結(jié)構(gòu)外緣線進(jìn)行開挖,嚴(yán)禁超挖,圈梁底和井底均須嚴(yán)格按設(shè)計(jì)高程開挖,不得超挖擾動(dòng)原狀土,榀架間距要嚴(yán)格按設(shè)計(jì)要求施工。
4.3
安裝鋼格柵,焊接縱向連接筋,掛鋼筋網(wǎng)片土方開挖后應(yīng)立即沿與井壁成 15°~20°方向打設(shè) Φ42 注漿錨管并注漿,注漿壓力控制在 0.2~0.3MPa,然后掛內(nèi)層鋼筋網(wǎng)片,安裝鋼格柵,錨管端部要與鋼格柵焊牢,防止鋼格柵下沉。
鋼格柵與鋼格柵之間用 Φ22 縱向連接筋焊牢,沿內(nèi)外主筋環(huán)向間距每米一根,連接筋焊接時(shí)必需滿焊并且滿足搭接長(zhǎng)度的要求。鋼筋網(wǎng)與縱向連接筋、鋼格柵連接牢固。鋼格柵的安裝必須牢固,平面必須保持水平,平面翹曲 <2cm。
4.4 噴射混凝土
噴射混凝土設(shè)計(jì)強(qiáng)度等級(jí)為 C20,由 42.5 號(hào)普通硅酸鹽水泥、中粗砂、豆石(粒徑在 0.5~1.5cm)組成。
經(jīng)驗(yàn)配比為水泥:砂子:石子 =1:2:2;速凝劑摻量為水泥重量的 5%,水灰比控制在 0.4~0.5 之間。水泥、砂子、豆石用攪拌機(jī)攪拌,混合料在噴射機(jī)附近摻入速凝劑,混合料隨拌隨用,不摻速凝劑的干料其存放時(shí)間不超過 45 分鐘。
在鋼格柵安裝、縱向連接筋焊接、錨管打設(shè)完畢后,然后掛外層鋼筋網(wǎng)片,再噴射混凝土直到設(shè)計(jì)厚度30cm。
噴射混凝土前應(yīng)檢查開挖斷面尺寸,清除開挖面的浮土,尤其是與上一榀鋼格柵連接處,必須將上一次噴混凝土?xí)r的回彈料清理干凈。噴射混凝土前用高壓風(fēng)清掃開挖面,并埋設(shè)控制噴射混凝土厚度的標(biāo)志。噴射作業(yè)應(yīng)分層、分段依次進(jìn)行。噴射順序應(yīng)自下向上。
先噴鋼格柵的混凝土,后噴射鋼格柵之間的混凝土,一次噴射厚度不得大于 100mm,分三次噴滿,直至噴射到設(shè)計(jì)厚度。
每次噴射混凝土之前,應(yīng)將前次噴射的混凝土的接茬部位鑿毛,清除表面粘附的泥土,以保證接茬處混凝土的密實(shí),力求表面平順。噴射混凝土終凝 2h 后,噴水養(yǎng)護(hù),每隔 4~8 小時(shí)噴水一次。
4.5 封底
清遠(yuǎn)市邊坡加固施工邊坡支護(hù)施工隊(duì),清城區(qū)邊坡支護(hù)施工隊(duì)邊坡加固施工(鳳城街道辦事處,東城街道辦事處,洲心街道辦事處,橫荷街道辦事處,源潭鎮(zhèn),龍?zhí)伶?zhèn),石角鎮(zhèn),飛來峽鎮(zhèn),清遠(yuǎn)市高新技術(shù)產(chǎn)業(yè)開發(fā)區(qū),清遠(yuǎn)市國(guó)營(yíng)銀盞林場(chǎng))。清新區(qū)邊坡加固施工邊坡支護(hù)施工隊(duì)(太和鎮(zhèn),太平鎮(zhèn),山塘鎮(zhèn),三坑鎮(zhèn),龍頸鎮(zhèn),禾云鎮(zhèn),浸潭鎮(zhèn),石潭鎮(zhèn),筆架林場(chǎng))。佛岡縣邊坡支護(hù)施工隊(duì)邊坡加固施工(石角鎮(zhèn),水頭鎮(zhèn),湯塘鎮(zhèn),龍山鎮(zhèn),高崗鎮(zhèn),逕頭鎮(zhèn))。陽山縣邊坡加固施工邊坡支護(hù)施工隊(duì)(青蓮鎮(zhèn),江英鎮(zhèn),杜步鎮(zhèn),七拱鎮(zhèn),太平鎮(zhèn),楊梅鎮(zhèn),大?鎮(zhèn),小江鎮(zhèn),嶺背鎮(zhèn),黃坌鎮(zhèn),黎埠鎮(zhèn),陽城鎮(zhèn),秤架瑤族鄉(xiāng))。連山壯族瑤族自治縣邊坡支護(hù)施工隊(duì)邊坡加固施工(永和鎮(zhèn),吉田鎮(zhèn),太保鎮(zhèn),禾洞鎮(zhèn),福堂鎮(zhèn),小三江鎮(zhèn),上帥鎮(zhèn),連山林場(chǎng),禾洞農(nóng)林場(chǎng))。連南瑤族自治縣邊坡支護(hù)施工隊(duì)邊坡加固施工(三江鎮(zhèn),大麥山鎮(zhèn),寨崗鎮(zhèn),三排鎮(zhèn),渦水鎮(zhèn),大坪鎮(zhèn),香坪鎮(zhèn))。英德市邊坡加固施工邊坡支護(hù)施工隊(duì)(英城街道辦事處,沙口鎮(zhèn),望埠鎮(zhèn),橫石水鎮(zhèn),橋頭鎮(zhèn),青塘鎮(zhèn),白沙鎮(zhèn),大站鎮(zhèn),西牛鎮(zhèn),九龍鎮(zhèn),含光鎮(zhèn),大灣鎮(zhèn),石灰鋪鎮(zhèn),石牯塘鎮(zhèn),下太鎮(zhèn),波羅鎮(zhèn),橫石塘鎮(zhèn),大洞鎮(zhèn),連江口鎮(zhèn),黎溪鎮(zhèn),水邊鎮(zhèn),英紅鎮(zhèn),東華鎮(zhèn),黃花鎮(zhèn))。連州市邊坡加固施工邊坡支護(hù)施工隊(duì)(連州鎮(zhèn),星子鎮(zhèn),大路邊鎮(zhèn),龍坪鎮(zhèn),西岸鎮(zhèn),保安鎮(zhèn),豐陽鎮(zhèn),東陂鎮(zhèn),九陂鎮(zhèn),西江鎮(zhèn),瑤安瑤族鄉(xiāng),三水瑤族鄉(xiāng))。廣州市邊坡支護(hù)施工隊(duì),韶關(guān)市邊坡支護(hù)施工隊(duì),深圳市邊坡支護(hù)施工隊(duì),珠海市邊坡支護(hù)施工隊(duì),汕頭市邊坡支護(hù)施工隊(duì),佛山市邊坡支護(hù)施工隊(duì),江門市邊坡支護(hù)施工隊(duì),湛江市邊坡支護(hù)施工隊(duì),茂名市邊坡支護(hù)施工隊(duì),肇慶市邊坡支護(hù)施工隊(duì),惠州市邊坡支護(hù)施工隊(duì),梅州市邊坡支護(hù)施工隊(duì),汕尾市邊坡支護(hù)施工隊(duì),河源市邊坡支護(hù)施工隊(duì),陽江市邊坡支護(hù)施工隊(duì),清遠(yuǎn)市邊坡支護(hù)施工隊(duì),東莞市邊坡支護(hù)施工隊(duì),中山市邊坡支護(hù)施工隊(duì),潮州市邊坡支護(hù)施工隊(duì),揭陽市邊坡支護(hù)施工隊(duì),云浮市邊坡支護(hù)施工隊(duì)
工作井開挖至設(shè)計(jì)深度后,應(yīng)清理基底,打設(shè) 15cm厚 C15 素混凝土墊層后,澆注鋼筋混凝土底板及部分側(cè)墻至頂管預(yù)留洞口處,底板厚度 0.5m,外挑 0.3m(同噴錨厚度),側(cè)墻厚度 0.2m。待底板及側(cè)墻混凝土強(qiáng)度達(dá)到設(shè)計(jì)強(qiáng)度的 70%以上后,可進(jìn)行頂管的頂進(jìn)施工。
4.6 完成永久檢查井施工
待頂管頂進(jìn)完成后,施做工作井其余部分鋼筋混凝土主體側(cè)墻及頂板,施做檢查井井筒及流槽后,覆土回填。
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多參數(shù)水質(zhì)分析儀:產(chǎn)品描述技術(shù)參數(shù)
技術(shù)參數(shù):
重復(fù)性:≤2%
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包裝參數(shù)多參數(shù)水質(zhì)分析儀:技術(shù)文檔北京柏達(dá)儀和科技有限公司成立于2009年3月30日,主要從事工業(yè)產(chǎn)品,儀器儀表的研發(fā),生產(chǎn),進(jìn)口代理與銷售業(yè)務(wù)。公司的核心競(jìng)爭(zhēng)力在于打造專業(yè)和完善的互聯(lián)網(wǎng)營(yíng)銷平臺(tái),通過龐大的網(wǎng)絡(luò)產(chǎn)品庫和專業(yè)的服務(wù)團(tuán)隊(duì),為用戶量身打造適合的產(chǎn)品解決方案。注重客戶的感受,是我們的服務(wù)理念和宗旨。作為眾多知名品牌的合作伙伴,柏達(dá)儀和以其優(yōu)良的品質(zhì)和服務(wù)來閣下員工的職業(yè)健康,安全環(huán)境和美好未來。
豚鼠內(nèi)皮素1(ET-1)ELISA Kit
guinea pig Endothelin 1,ET-1 ELISA Kit
用途: For research use only. Not for diagnostic use. 原理 : This assay employs the quantitative sandwich enzyme immunoassay technique. Antibody specific for EDN1 has been pre-coated onto a microplate. Standards and samples are pipetted into the wells and any EDN1 present is bound by the immobilized antibody. After removing any unbound substances, a biotin-conjugated antibody specific for EDN1 is added to the wells. After washing, avidin conjugated Horseradish Peroxidase (HRP) is added to the wells. Following a wash to remove any unbound avidin-enzyme reagent, a substrate solution is added to the wells and color develops in proportion to the amount of EDN1 bound in the initial step. The color development is stopped and the intensity of the color is measured. 特異性: This assay has high sensitivity and excellent specificity for detection of Guinea pig EDN1. No significant cross-reactivity or interference between Guinea pig EDN1 and analogues was observed. 精密度: Intra-assay Precision (Precision within an assay): CV%<8% Three samples of known concentration were tested twenty times on one plate to assess. Inter-assay Precision (Precision between assays): CV%<10% Three samples of known concentration were tested in twenty assays to assess. 樣本搜集及儲(chǔ)存: Serum: Use a serum separator tube (SST) and allow samples to clot for two hours at room temperature or overnight at 4°C before centrifugation for 15 minutes at 1000 ×g. Remove serum and assay immediately or aliquot and store samples at -20°C or -80°C. Avoid repeated freeze-thaw cycles. Plasma: Collect plasma using EDTA, or heparin as an anticoagulant. Centrifuge for 15 minutes at 1000 ×g at 2-8°C within 30 minutes of collection. Assay immediately or aliquot and store samples at -20°C or -80°C. Avoid repeated freeze-thaw cycles. 檢測(cè)步驟: Bring all reagents and samples to room temperature before use. Centrifuge the sample again after thawing before the assay. It is recommended that all samples and standards be assayed in duplicate. 1. Prepare all reagents, working standards, and samples as directed in the previous sections. 2. Refer to the Assay Layout Sheet to determine the number of wells to be used and put any remaining wells and the desiccant back into the pouch and seal the ziploc, store unused wells at 4°C. 3. Add 100μl of standard and sample per well. Cover with the adhesive strip provided. Incubate for 2 hours at 37°C. A plate layout is provided to record standards and samples assayed. 4. Remove the liquid of each well, don't wash. 5. Add 100μl of Biotin-antibody (1x) to each well. Cover with a new adhesive strip. Incubate for 1 hour at 37°C. (Biotin-antibody (1x) may appear cloudy. Warm up to room temperature and mix gently until solution appears uniform.) 6. Aspirate each well and wash, repeating the process two times for a total of three washes. Wash by filling each well with Wash Buffer (200μl) using a squirt bottle, multi-channel pipette, manifold dispenser, or autowasher, and let it stand for 2 minutes, complete removal of liquid at each step is essential to good performance. After the last wash, remove any remaining wash Buffer by aspirating ordecanting. Invert the plate and blot it against clean paper towels. 7. Add 100μl of HRP-avidin (1x) to each well. Cover the microtiter plate with a new adhesive strip. Incubate for 1 hour at 37°C. 8. Repeat the aspiration/wash process for five times as in step 6. 9. Add 90μl of TMB Substrate to each well. Incubate for 15-30 minutes at 37°C. Protect from light. 10. Add 50μl of Stop Solution to each well, gently tap the plate to ensure thorough mixing. 11. Determine the optical density of each well within 5 minutes, using a microplate reader set to 450 nm. If wavelength correction is available, set to 540 nm or 570 nm. Subtract readings at 540 nm or 570 nm from the readings at 450 nm. This subtraction will correct for optical imperfections in the plate. Readings made directly at 450 nm without correction may be higher and less accurate. 結(jié)果計(jì)算: Using the professional soft "Curve Expert 1.3" to make a standard curve is recommended, which can be downloaded from our web. Average the duplicate readings for each standard and sample and subtract the average zero standard optical density. Create a standard curve by reducing the data using computer software capable of generating a four parameter logistic (4-PL) curve-fit. As an alternative, construct a standard curve by plotting the mean absorbance for each standard on the x-axis against the concentration on the y-axis and draw a best fit curve through the points on the graph. The data may be linearized by plotting the log of the EDN1 concentrations versus the log of the O.D. and the best fit line can be determined by regression analysis. This procedure will produce an adequate but less precise fit of the data. If samples have been diluted, the concentration read from the standard curve must be multiplied by the dilution factor.
規(guī)格參數(shù):
容積:1加侖=3.75升
內(nèi)徑:136 mm
壁厚:3 mm
底厚:5 mm
高度:360 mm
寬度:180 mm
可承受氣壓范圍:1~10 bar
另:可根據(jù)客戶的具體要求訂做非標(biāo)壓力桶。
上海理亨工貿(mào)有限公司長(zhǎng)期代理銷售西門子模塊所使用的風(fēng)機(jī),種類齊全,備有庫存。
上海理亨公司是德國(guó)依必安派特(ebmpapst)公司正式EBM風(fēng)機(jī)產(chǎn)品代理商.
長(zhǎng)期經(jīng)銷全部型號(hào)的ebm-papst風(fēng)機(jī)其中幾十種常用型號(hào)均備有充足庫存現(xiàn)
貨供應(yīng)且價(jià)格優(yōu)惠.
型號(hào):
EBM R6D500-AK03-01
EBM R6D560-AH05-01
EBM R6D630-A703-01
EBM后向離心風(fēng)機(jī)
EBM R4E400-AB23-05 葉輪直徑為400mm的離心風(fēng)機(jī),德國(guó)原裝進(jìn)口,庫存充
足,價(jià)格優(yōu)惠!
EBM R4E310-AP11-01 FFU上一款常用風(fēng)機(jī),庫存充足,價(jià)格優(yōu)惠!
EBM R2E220-AA40-05
EBM R2E190-AO26-05 西門子變頻器常用的一款風(fēng)機(jī),是R2E190-AE77-B8
的替代型號(hào)
EBM R4E400-AB23-05 葉輪直徑為400mm的離心風(fēng)機(jī),德國(guó)原裝進(jìn)口,庫存充
足,價(jià)格優(yōu)惠!
EBM R4E310-AP11-01 FFU上一款常用風(fēng)機(jī),庫存充足,價(jià)格優(yōu)惠!
EBM R2E220-AA40-05
EBM R2E190-AO26-05 西門子變頻器常用的一款風(fēng)機(jī),是R2E190-AE77-B8
的替代型號(hào)
EBM R4D400-AB04-05 變頻器行業(yè)常用的一款離心風(fēng)機(jī)!
EBM R2E225-BD92-09 葉輪直徑為225mm的離心風(fēng)機(jī),庫存充足,價(jià)格優(yōu)惠!
EBM 軸流風(fēng)機(jī)
EBM S4E350-AP06-30 外帶金屬網(wǎng)罩,扇葉直徑為350mm的軸流風(fēng)機(jī)
EBM S4D300-AP28-30 外帶金屬網(wǎng)罩,扇葉直徑為300mm的軸流風(fēng)機(jī)
EBM S4E300-AP26-30 扇葉直徑為300mm的軸流風(fēng)機(jī),外帶金屬網(wǎng)罩.
EBM W2E143-AB09-01 扇葉直徑143mm軸流風(fēng)機(jī).現(xiàn)貨,價(jià)優(yōu)!
EBM W2E142-BB01-01 扇葉直徑142mm的金屬外框軸流風(fēng)機(jī). PAPST型號(hào)為
7855ES
EBM W2E200-HK38-01 常用的一款軸流風(fēng)機(jī).我公司庫存充足,價(jià)格優(yōu)惠!!
EBM W2E250-HL06-01 扇葉直徑250mm的軸流風(fēng)機(jī),庫存充足,價(jià)格優(yōu)惠!
EBM W2S130-AA03-01 扇葉直徑130,金屬外框
EBM 前向離心風(fēng)機(jī)
EBM D2E146-AP47-22 金屬蝸殼,出風(fēng)口帶法蘭邊,葉輪直徑為146mm的前向
離心風(fēng)機(jī)
EBM D2E146-HT67-01 空調(diào) 凈化行業(yè)常用的前向離心風(fēng)機(jī),庫存充足,價(jià)格優(yōu)
惠!
EBM D2E146-HR93-01 葉輪直徑為146mm的前向離心風(fēng)機(jī).塑料蝸殼,雙進(jìn)風(fēng)
口.
EBM D2E133-AM47-01 金屬蝸殼的前向離心風(fēng)機(jī)
EBM G2E180-EH03-01 金屬蝸殼的單進(jìn)口前向離心風(fēng)機(jī)
EBM D2E140-HR97-05 塑料蝸殼的雙進(jìn)口前向離心風(fēng)機(jī).
型號(hào)如下:
K2E190-AB77-09
K2E220-AB06-09
K2E225-AA26-09
K2E250-AA01-09
R2D180-AL10-18
R2D220-AB02-10
K2E225-AB92-09
D2E160-AH01-17
D2E146-AA03-43
DV6224/2-532
6224N-269
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