裂縫加大 的英文怎麼說
中文拼音 [lièféngjiādà]
裂縫加大
英文
leak gaining-
Through the experimental research, we think : the technological capacity of fiberglass asphalt macadam if weaker than asphalt macadam, however, if use elasticized capacity to solve blending technological problem. adjust the breed of fiber silk, extend its diameter, its paving capacity is still worth exploring, asphalt - rubber macadam structure lager have good deformed - become capacity and crazed - resistance capacity, small gap rate. good water - resistance capacity, good hot - stability and simple construction technology. therefore. pitch rubber spall is a good cover material which is suitable for the second class or lower whose asphalt pavement has split open because of fatigue. and is the good structural measure of preventing half - rigidity grass - roots unit shrink - rift reflecting. pave a thin layer of pitch rubber spall between asphalt - type pavement layer and half - rigidity basic level, although the cost of building is higher than paving togongbu in the middle, the construction technology, crazing - resistance and water - resistance are better than togongbu, not only could reduce greatly the reflex of half - rigidity grass - roots unit material, long then the use lifespan of pavement, but also it is possible to reduce suitably the thickness of asphalt mixture layer, though the cast of building in the early days becomes more, in the long - term opinion, it have fully important technological and economical significance
通過試驗研究認為:玻璃纖維瀝青碎石的技術性能不如瀝青碎石好,但路用彈性性能較好,如能解決拌和工藝問題,調整纖維絲的品種,增大其直徑,其路用性能仍值得探討,瀝青橡膠碎石結構層具有變形性能和抗裂性能良好,空隙率小,防水性能好,熱穩定性較好,施工工藝簡單的特點,因此,瀝青橡膠碎石是二級及二級以下公路因疲勞而開裂的瀝青路面的良好罩面材料,也是防止半剛性基層收縮裂縫反射的良好結構措施,在瀝青類路面面層和半剛性基層之間夾鋪瀝青橡膠碎石薄層,雖然造價比夾鋪土工布高,但其施工工藝,抗裂性能和防水性能均優于土工布,不僅可以大大減少半剛性基層材料的反射裂縫,延長路面使用壽命,而且可能適當減薄瀝青混合料面層的厚度,雖然初期造價有所增加,從長遠來看,具有十分重要的技術和經濟意義。The expansion agents can only make up the shrinkage to some extent, and the compensation effects would be reduced when the retardener and fly - ash are used. the expansion agents are not panaceas to avoid the shrinkage cracking as expansion can also reduce the concrete soundness. under bad curing condition, the polypropylene fibrillated film fiber can improve concrete ' s anti - crarking property, while the nominal steels have very unobvious effects. to reduce the concrete shrinkage thus avoid the cracking, the former factors must all be taken into account in concrete proportion design to develop sound concrete
研究結果表明,水泥的品種和用量是影響混凝土收縮值的主要因素之一,當混凝土中水泥用量超過470kg / m ~ 3時,混凝土的收縮值超過400 10 ~ ( - 6 ) ,在約束狀態下存在高開裂風險;採用細砂使混凝土單位用水量顯著提高,收縮值也大幅增加;優質粉煤灰總體上能抑制混凝土的收縮,以超量方式摻入其抑制作用更加明顯,但粉煤灰混凝土早期的粘聚性較差,應注意養護,以免失水產生龜裂;早強減水劑和緩凝減水劑都會使混凝土收縮值增加;膨脹劑只能補償混凝土部分收縮,同時受緩凝劑和粉煤灰的抑制,而且膨脹使混凝土的體積安定性增加了不確定因素,膨脹劑不是解決混凝土收縮裂縫的良方。Here the hsc of sompa is achieved through adding super - effective water reducer, fined slag and silicon fume, and decreasing the water / cement ratio. by varying the area ( spacing ) of tension bars, compressive bars, vertical links and distribution steel and embedding steel fiber and polypropylene fiber we try to improve the behaviors of reinforced high performance concrete one - way spanning slabs in bending, so that its ductility be greater than 5. with the same arrangement of steel the width of bending member is varied to observe the effect of the width / depth ratio on the ultimate compressive strain of concrete
通過變化受拉筋含筋率和受壓筋、箍筋(鉤筋、分佈筋)含量,或摻加纖維使之成為鋼纖維高強混凝土( sfrhsc )和聚丙烯纖維高強混凝土( pfrhsc ) ,對高強混凝土雙筋截面梁、板的受彎性能進行了試驗研究,試圖改善高強混凝土受彎構件的延性,使其延性比大於5 ;並在相同配筋情況下,通過變化截面寬度,研究了高強混凝土受彎構件的寬高比對壓區混凝土極限應變的影響;並對試驗構件的裂縫發展情況進行了觀測。To avoid manual labor of chiseling - grossness, in the area of second - stage concrete construction, permanently non - removed metal molding boards nets are used as molding boards of first - stage concrete. substitution joints of reinforcing steel bars for traditional electric welding and usage of equipments for joints of reinforcing steel bars efficiently improve strength of junctions and rate of connecting reinforcing steel bars, and safety of construction and stability of quality, and greatly reduce cost. it ' s possible that three gorges project become top - ranking project in the world by study on systems engineering of high - strength concrete construction
混凝土縫面處理採用高壓水流沖毛技術,大大提高了施工工效,減少了倉面污染;模板工程大量採用定型鋼模板施工技術,提高了壩體混凝土成型質量和工程進度;在二期混凝土施工區域,為免除人工鑿毛勞動強度,採用永久性免拆金屬模板網作為一期混凝土模板;鋼筋連接改進傳統的電焊連接方式,採用大量採用鋼筋接頭機械連接技術,有效提高了接頭強度和鋼筋連接速度,施工安全性大大加強,質量穩定性有效提高,經濟成本大大降低;三峽二期工程持續高強度混凝土施工系統工程的研究,使三峽工程成為名符其實的「世界一流工程」成為可能;三峽二期工程混凝土溫控綜合技術的應用,有效降低了壩體混凝土溫度的產生;混凝土表面處理及裂縫處理技術的應用,提高了建築物的整體性和耐久性。Based on the detailed investigation, the distribution of cracks in capping beam of the abutment of huaihe river bridge on the national road 107 is presented, the causes leading to the cracks are thoroughly analyzed, and the construction scheme and methods for remedy of the cracks in the abutment are described as well
摘要在詳細調查的基礎上,介紹了107國道槐河大橋橋臺蓋梁裂縫的分佈情況,深入分析了裂縫形成原因,並闡述了該橋的加固方案和施工方法。Since the commercial oil flow being obtained in bulate fractured reservoir by fracturing well bei 10 in 2001, daqing oilfield company ltd. has speeded up the exploration of this kind of reservoir in hailaer basin
摘要自2001年貝10井首次在布達特裂縫性儲層壓裂改造后獲得高產工業油流以來,大慶油田公司加大了對海拉爾盆地該類儲層的勘探力度。The research shows that : 1 ) the ductility of the hsc bending members constructed is much greater than 5 ; 2 ) increasing the vertical links and distribution steel can increase the deflection under ultimate moment ; 3 ) with appropriate compressive bars, vertical links and distribution steel the increase of moment after yield and the decrease of moment under ultimate moment can be ignored, so the ductility of the hsc bending member is much larger ; 3 ) the width / depth ratio of hsc bending member has no obvious effect on the ultimate compressive strain of concrete ; 4 ) the method used here to calculate the deflection is applicable ; 5 ) the location of crack coincides with the location of vertical links and distribution steel ; 6 ) the bending property of the hsc structure under the blast load can meet the demand of protective engineering
研究表明:本文研究的梁、板構件的延性比遠大於5 ;增加箍筋(鉤筋、分佈筋)含量,可以提高壓區混凝土剝落時的撓度;在適當的受壓筋、箍筋(鉤筋、分佈筋)含量下,可以忽略壓區混凝土剝落瞬間的承載力下降,從而大大提高構件的延性;受彎構件的寬高比對壓區混凝土極限應變的影響不明顯;受彎構件的裂縫間距受箍筋(鉤筋、分佈筋)的布置影響;文中所用的承載力和變形計算方法是可行的。化爆試驗表明,高強混凝土構件的動載抗彎性能能夠滿足防護結構的要求。Disposal and reinforcement design of crack on coping of bridge pier
新沭河大橋蓋梁裂縫處治及加固設計If the strength and workability are approximate identical, concrete tends more easily to crack with the increasing sand rate
在強度和工作性相當的情況下,隨著砂率的增大,混凝土出現裂縫的機會增加了。Abstract : in this article, it is introduced that a method of rooting has been successfully used in stabing the base of stockhouse of grain, in order to effectively stop sinking and cracking and extend the lifetime of those buildings, which do not have firm base
文摘:針對浙江省奉化市糧食局米廠大米車間、糧庫基礎托換和鍋爐房基礎加固工程,成功地應用樹根樁基礎托換技術,使沉降和裂縫得到有效控制,危房再現使用價值。Through the research and analysis on the three aspects concerning the base interface of the pavement panel, crack accumulation, expansion in the pavement panel and interaction between spring plates on the road surface as well as its damage on the road fatigue, it is first brought forth that the process of fissures and breakage in the cement concrete pavement can be divided into three stages, i. e. stage of initial crack formation and damage in the bottom of the pavement slab, stage of accumulation, intensifying & expansion in ruptures from load during the time of use and stage of fissures & breakage in the pavement
通過對路面板底界面開裂、路面板中裂縫積聚、擴展和路面表面車板相互作用及其對路面疲勞破壞的影響等三個層面的研究和分析,首次提出水泥混凝土路面的開裂和破壞過程可以分為三個階段,即路面板底初始損傷西南交通大學博士研究生學位論文第11頁和早期裂縫的形成階段、使用期間荷載作用對路面造成的開裂損傷累計、加劇和裂縫擴展階段以及路面斷裂破壞階段。Specifically, according to the w - w five parameters failure theory, the fracture criterion of crack is established, and the state of crack ( open or close ) is judged by the values of the crack strain. combining the two points, the predict - model about the failure of concrete material is established. this predict - model can predict 16 failure forms, and basing the different failure form predicted after crack, the stress - strain relationship matrix of concrete material is adjusted
具體來講,根據w - w的五參數混凝土破壞理論,建立混凝土的開裂準則,根據開裂應變值來判斷裂縫是張開還是閉合,從而在兩者基礎上建立了裂縫的開裂預測模式,總共有16種開裂模式;裂后根據具體的開裂模式及殘余抗剪能力來調整混凝土的本構關系矩陣,即用等效剛度代替原有剛度,考慮到垂直於裂縫方向的剛度為零,這樣會使裂后的總剛出現病態,為此文中通過引用鬆弛系數來對出現裂縫的單元進行預處理,一方面可解決因過大的舍入誤差導致計算結果的不可信問題,另一方面就是可加速收斂。The experiments showed that the cracking process of such restrained beams in this paper can be divided into three phases, that is, formation of the fanning zones, initialization and development of splitting cracks along longitudinal reinforcement, and accelerating development of the critical crack and / or cracks ( diagonal, flexural ). during the last two phases, it was observed that further opening of some cracks led to some
研究結果表明,鋼筋混凝土有腹筋約束梁的裂縫開展過程大致可分為扇形區逐步形成、劈裂裂縫出現和發展、最終臨界裂縫(斜裂縫或彎曲裂縫)加速發展至破壞等階段。在後兩個階段中存在某些裂縫發展減弱同時某些裂縫迅速開展的「此消彼漲」的現象。The technique of dam construction by weakly expansive concrete added with magnesia ( wecam ) is a new technique developed in china, in which appropriate light - burnt magnesia is added to dam concrete when produced to generate a special delayed expansive stress to compensate shrinking stress due to decrease of temperature so as to prevent concrete cracks. it not only is in favor of simplifing the method of temperature control and an effective solution to the crack problem of concrete dam, but also simplify the technology of dam construction and bring down the project cost, further more, speed greatly up the construction of concrete dam
外摻氧化鎂微膨脹混凝土築壩技術是指在生產大壩混凝土時,摻入適量的輕燒氧化鎂,利用其特有的延遲膨脹補償混凝土壩的溫度應力,以防止混凝土壩產生的裂縫,這不僅有利於簡化溫控措施,有效地解決混凝土壩的開裂問題;而且簡化了施工工藝,降低了工程造價,大大了加快施工進展。By comparing vertical fracturing well simulation with a streamline model and black oil model, it was pointed out that in simulation of vertical fracturing wells of hydraulic fracturing by using grid amplification there existed many drawbacks, such as grid orientation, calculating times doubled with the increase of grid number, the heterogeneity of model increased as fracture existence, which resulted in difficulties of equation solution and convergence
摘要通過流線模型和黑油模型模擬垂直裂縫壓裂井的對比分析,指出了在黑油模型中運用網格放大技術模擬水力壓裂垂直裂縫井生產動態存在的諸多缺陷,如網格取向嚴重、計算時間隨網格數目增加而成倍增加、裂縫的存在增加模型的非均質性從而嚴重加大方程的求解難度,方程求解出現不收斂等。Abstract : precast floorslabs are widely used in residential buildi ngs in order to quicken the progress of construction. yet some quality problems accoringly arise, one of which is the fissure along the splice of the precast floor slab. this essay analyses the causes of the fissure and puts forward some effecti ve measures for the prevention and cure
文摘:在住宅的設計與建設中大量採用預制樓板結構,雖然加快了施工進度,但也出現了一些問題,預制樓板板縫方向產生裂縫就是其中之一,本文對其原因進行了分析,並提出了有效的防治措施As soon as the normal section cracks, the crack firstly appears in the flexural region. at this moment, the load - deflection curve has a turning point. with the increase of the load, the rigidity of the beam decreases compared with that before cracking because of the development of cracks in flexural region, and the formation and development of diagonal cracks toward the loading point, the load - deflection curve is basically linear till the beam fails
正截面開裂前,荷載撓度曲線基本為線性,截面剛度較大;正截面開裂時,裂縫先在純彎段出現,荷載撓度曲線出現轉折點,隨著荷載的增加,純彎段正裂縫的發展以及剪跨段斜裂縫的產生並向梁的受壓區加荷點發展,使梁的剛度較截面開裂前減少,荷載撓度曲線也基本為線性直到梁破壞。In this paper, a two - dimensional analysis of the tanjialiangzi bridge was first performed ; then a segment of the bridge was modeled and a three - dimensional analysis of it were carried out by employing the fem software of ansys ; after a careful analysis of the result of the calculations, the causes of the diagonal cracking in the web of the beam were given out ; and also, in the last part, common steps of damage evaluation of the long - span pc continuous bridges through fem software were summarized
本文首先對譚家梁子大橋作平面計算分析;然後運用ansys軟體建立該橋局部梁段的空間有限元模型,並在此基礎上進行空間局部有限元分析;通過對計算結果的整理和分析,從設計方面探討了該橋腹板斜裂縫產生的原因:此後,針對病害成因,本文提出了裂縫修補和腹板加固的方法;最後總結了運用有限元軟體分析同類橋梁病害的一般方法。To guarantee the stability of the frame in strong earthquake motion, and on the basis of analysis on the concept of “ capacity design ” in the above three countries seismic design provisions, it is advised that the moment amplification coefficients at the bottom sections of columns for the frame structures in some seismic intensity be increased to reduce the possibility of the frame column yielding. taking the above three countries seismic codes as reference, it is recommended that it be added details of seismic design by using diagonal shear reinforcement to safeguard beams against sliding shear failure, when the positive - negative shear forces are reverse and the ratio is high
為了保證在大震作用下框架結構的穩定性,借鑒國外規范「柱-梁承載力級差系數」的思想,本文提出了對部分抗震等級的框架結構的柱端抗彎能力增強系數應予以提高,以降低框架柱屈服的可能性;參照國外有關規范的發展,本文建議對于正、負剪力反向且比值較大的框架梁宜增加交叉斜筋,以防止沿垂直裂縫發生嚴重的剪切錯動。By finding the big penetrating crack in wangpu aqueduct upper frusta structure, the task group has adopted the integrated measures of chemical perfusion, carbonized fibre reinforcement and doping external surfaces to effectively reinforce the work, and improved the reinforcing techniques considering the characteristic of hydraulic engineering, made remarkable benefit in social, economic aspects
摘要針對王鋪渡槽上部墩柱結構出現的大開度貫穿性裂縫,經過全面分析和多方案綜合對比,採用裂縫化灌、碳纖維加固、外表面刷塗水性環保型乳膠漆外墻塗料作為防護的綜合措施對原工程進行有效的加固處理,並結合水利工程的自身特點改進了加固技術工藝,取得了顯著的經濟和社會效益。分享友人