碎石
- 基本解释 (translations)
- detritus · galet · gravel · macadam · riprap · breakstone · graveling · graveled · gravelling · gravels
- 词组短语
- reduced stone
- 更多网络例句与碎石相关的网络例句 [注:此内容来源于网络,仅供参考]
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To accelerate the widespread of Synchronous Chip Seal and improve the operation quality of Synchronous Chipsealer, key techniques which influence the operation quality is studied detailedly, including the control of distributing quality, the dynamics characteristics of hydraulic system and the spray characteristics of asphalt nozzle of Synchronous Chipsealer.1 The factors which influence Synchronous Chip Seal quality are studied. Fiducial probability of simultaneous distribution density is advised to be used in evaluating the distribution bias and standard deviation of asphalt and aggregates simultaneously, which is more advanced than the single index evaluation method used before.2 The volume efficiency formula of asphalt pump is revised after analyzing the data of volume efficiency with mathematical statistics, which is helpful to match the asphalt spray system and control the flow out of asphalt pump accurately. With equation deduction and experiment, dynamic of hydraulic system used in Synchronous Chipsealer is studied, which lay the theory foundation on improving the stability and efficiency from design and controlling.4 Simulation on hydraulic system used in Synchronous Chipsealer is done with AMESim; the results indicate that multi-circle parallel connected hydraulic system with constant pressure power is better than that with load-sensing pressure power at present, because the latter will oscillate when the multi circles work at the same time. This conclusion has been proved during the debug of Synchronous Chipsealer.5 Asphalt nozzle characteristics, such as flat jet shape, flow distribution, are studied with experiment, the results indicate that cross quality of asphalt distributing is not increased linearly follow the increase of fan overlap level, the best point usually exists between two whole overlap level, asphalt distributing quality is better than±4% at the 2.5 overlap level, meets the superior specified in standard; The distribution quality of Synchronous Chipsealer can be increased by spray asphalt of different flow rang with nozzle of different diameter
为了加快同步碎石封层技术的推广,提高同步碎石封层设备的作业质量,本文对同步碎石封层设备作业质量的影响因素与控制方法、液压系统的动力学特性和沥青喷嘴的喷洒特性等关键技术进行了深入细致的研究:1研究了影响同步碎石封层作业质量的因素,提出了采用联合密度分布置信概率对同步碎石封层中沥青洒布量和碎石撒布量的系统偏差和标准差指标进行综合评价的方法,克服了传统评价方法只能对单一指标进行评价的缺陷;2采用数理统计的方法,研究了沥青泵的容积效率特性,修正了沥青泵容积效率公式,为沥青喷洒系统的匹配和沥青泵出口流量的精确控制提供了依据;采用数理方程推导与试验相结合的方法,研究了同步碎石封层设备液压系统的动力学特性,为从设计和控制的角度提高同步碎石封层设备液压系统的稳定性和效率奠定了理论基础;3运用AMESim软件对采用负载敏感控制和恒压控制的两种同步碎石封层设备液压系统进行仿真,结果表明:负载敏感控制的并联液压系统在多回路同时工作时,由于液压泵排量控制参考压力不稳定,容易引发液压系统振荡,恒压控制的并联液压系统是目前技术条件下比较理想的同步碎石封层设备工作装置驱动方案;该结论亦通过同步碎石封层设备装机试验得到了验证。4采用试验的方法对沥青喷嘴的喷洒特性进行了研究,结果表明:沥青洒布的横向精度并不是随着喷洒扇面重叠度的增加线性增加,其最高点通常出现在二个重叠度之间的"半重叠位置","2.5重叠"洒布时,沥青的横向洒布精度≤±4%,可以达到国家相关标准中的优级标准;同步碎石封层设备还可以根据不同洒布量情况下的流量需求,采用不同通径的喷嘴进行喷洒,提高沥青洒布精度。
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The preparation of underbase is cement:fly-ash:hoggin=3:10:90, the preparation of base is cement:fly-ash:hoggin=4.5:10:90. Compared to cement hoggin, the proportion of cement has been reduced by 1%, the weight of mixture has been reduced by 5%.
对水泥粉煤灰稳定碎石材料作为路面基层材料的配合比设计及其性能进行了研究,设计底基层的配合比为水泥:粉煤灰:碎石=3:10:90,基层配合比为水泥:粉煤灰:碎石=4.5:10:90,较水泥稳定碎石降低水泥剂量1%左右,并节省混合料用量5%。
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In view of the wide application of cement stabilized macadam base the advantages of cement stabilized macadam base are introduced.
结合水泥稳定碎石基层的广泛应用,介绍了水泥稳定碎石基层的优点,提出了水泥稳定碎石基层施工的质量控制要点及减少水泥稳定碎石基层裂缝的方法,以保证水泥稳定碎石基层的质量。
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It was shown that winter-time natural convection in the fractured-rock embankment began to occur in the side slope portions and developed from two side slope portions to the middle portion of embankment with lowering of surface temperatu...
通过引入自然对流指数,分析了自然对流降温效应随路堤碎石层填筑厚度的变化规律,其可分为恒零区、急增区和缓变区3个阶段,急增区的起点和终点对应于路堤碎石层填筑的最小厚度和最大厚度。最后,利用自然对流指数具体计算了不同粒径碎石层填筑的临界厚度。
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CYBERWAND double catheters ultrasound lithoclast master, Swiss EMS ultrasonic pneumatic lithotripsy lithotomy system, American holmium laser, German neodymium laser, Japan Olympus Digital high-definition endoscopy system, Japan Olympus E-duodenoscopy, Germany WOLF percutaneous nephrolithotomy, Germany WOLF ureteroscopy, Japan Olympus E-cystoscopy, Japan Olympus fiber soft nephrolithotomy, the fifth generation of electromagnetic waves lithotripsy system, IR stone composition analyzer, Siemens digital X-ray imaging system, GE Real-time dynamic three-dimensional color Doppler, Olympus resectoscope plasma, C-arm mobile X-ray machine and other international advanced equipments.
医院配备美国CYBERWAND双导管碎石清石系统、瑞士第四代EMS超声气压弹道碎石清石系统、美国钬激光、德国钕激光、日本奥林巴斯数码高清内窥镜系统、日本奥林巴斯电子十二指肠镜、德国WOLF经皮肾镜、德国WOLF输尿管镜、日本奥林巴斯电子膀胱镜、日本奥林巴斯纤维软性肾镜、第五代电磁波体外碎石系统、红外光谱结石成份分析仪、西门子数码X光成像系统、GE三维实时动态彩超、奥林巴斯等离子电切镜、C型臂移动式X光机等国际先进设备;严格按照世界卫生社团认定的诊疗标准,导入JCI认证体系;制定严格的疾病诊疗临床路径,为结石病患者提供全方位国际程度的诊疗服务。
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In this text, on the base of gradation design, the pavement performances of lime-fly ash stabilized aggregates and lime-fly ash mortar under controlling fine aggregates gradation are studied, and contrasted with the mixtures which are under uncontrolling fine aggregates gradation, including mechanical performance, stableness, anti-brushing performance, the anti-crack performance, and drawing the conclusion of controlling fine aggregates gradation.
在配合比设计的基础上,研究了控制细集料级配的二灰砂浆和二灰碎石混合料的力学性能、稳定性能,以及二灰碎石的抗收缩性能、抗冲刷性能,并与不控制细集料级配的二灰砂浆和二灰碎石混合料的路用性能进行了对比,得出实际施工中应控制细集料级配的结论。
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The result notes that dynamic triaxial test preferably simulate the actual stress state of grading macadam, and Uzan model which considers the shear performance of material can better reflect stress states of grading macadam. Regression coefficients of the model obviously present nonlinear characteristic with moisture changed, and to further influence dynamic resilient module.More the module is larger, more diminishing rate of maximum tensile stress on pavement Bottom is smaller. To enhance draining function and strength, the gradation should been rigid controlled, and which the content of less than 0.075mm is controlled between 5~7% and spring-back is controlled between200~300MPa are appropriate.
结果表明,动三轴试验较好地模拟了级配碎石层的实际受力状态;Uzan模型考虑了材料的剪切性能,更能反映了级配碎石在隧道路面中应力状态;随含水量的变化,Uzan模型中回归系数变化呈明显的非线性特征,进而显著影响级配碎石的动态回弹模量的变化;级配碎石模量越大,路面层底的最大拉应力减小率越小;为了兼顾到级配碎石层的排水渗透功能和强度,应严格控制级配,特别是0.075mm以下的含量宜控制在5%~7%,级配碎石的回弹模量宜控制在200~300MPa之间。
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Selecting right asphalt and macadam and operating construction technique strictly are the guarantee of the good effect of synchronous macadam seal.
同步碎石封层技术是沥青路面养护的新工艺、新技术,性能良好的同步碎石封层机是实施同步碎石封层技术的基础,正确选用沥青和碎石、严格把握施工工艺是取得同步碎石封层良好效果的保证。
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Authors designed four mixtures of dense-graded asphalt stabilized macadam base with the method recommended by Technical Specifications for Construction of Highway Asphalt Pavement, Superpave design method, coarse aggregate voids filling method and Bailey method separately, and determined the pavement performances of asphalt stabilized macadam base mixture under the optimal oil-stone rate which include resistance capacity to vertical deformation and fatigue. Then, four design methods were compared and appraised. Based on the above study, a new asphalt-stabilized macadam base mixture gradation design method-five control sieve design method was put forward.
分别采用现行规范推荐法、Superpave法、主骨架空隙体积填充法和贝雷法设计了4种密级配沥青稳定碎石基层混合料,然后采用力学指标设计法确定了所设计的4种级配沥青稳定碎石基层混合料的最佳油石比,并对最佳油石比下的沥青稳定碎石基层混合料进行了抗永久变形性能和抗疲劳性能等路用性能的研究;根据设计过程和设计结果对4种级配设计方法进行了比较评价,在此基础上提出了新的密级配沥青稳定碎石基层混合料的级配设计方法-五控制点级配设计方法。
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Authors designed four mixtures of dense-graded asphalt stabilized macadam base with the method recommended by Technical Specifications for Construction of Highway Asphalt Pavement,Superpave design method,coarse aggregate voids-filling method and Bailey method separately,and determined the pavement performances of asphalt stabilized macadam base mixture under the optimal oil-stone rate which include resistance capacity to vertical deformation and fatigue.
分别采用现行规范推荐法、Superpave法、主骨架空隙体积填充法和贝雷法设计了4种密级配沥青稳定碎石基层混合料,然后采用力学指标设计法确定了所设计的4种级配沥青稳定碎石基层混合料的最佳油石比,并对最佳油石比下的沥青稳定碎石基层混合料进行了抗永久变形性能和抗疲劳性能等路用性能的研究;根据设计过程和设计结果对4种级配设计方法进行了比较评价,在此基础上提出了新的密级配沥青稳定碎石基层混合料的级配设计方法——五控制点级配设计方法。
- 更多网络解释与碎石相关的网络解释 [注:此内容来源于网络,仅供参考]
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crushed stone base course:碎石底层
crushed stone aggregate 碎石骨料 | crushed stone base course 碎石底层 | crushed stone concrete 碎石混凝土
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bituminous macadam:沥青碎石;沥青碎石路
bituminous felt 沥青纸 | bituminous macadam 沥青碎石;沥青碎石路 | bituminous waterproof membrane 沥青防水膜层
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GR gr:碎石的
碎石的 GR GR ≧15%但<35%之碎石 | 细碎石的 FGR GRF ≧15%但<35%之细碎石 | 中等碎石的 MGR GRM ≧15%但<35%之中等碎石
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gravelly:铺有碎石的
gravelly 多碎石的 | gravelly 铺有碎石的 | gravelly 碎石构成的
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lithotrite:碎石器 碎石钳
lithotriptoscopy 膀胱镜取石术 膀胱镜碎石术 | lithotrite 碎石器 碎石钳 | lithotrity 碎石术
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lithotritist:碎石专科医师 (名)
lithotrite 碎石钳 (名) | lithotritist 碎石专科医师 (名) | lithotrity 碎石术 (名)
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MacAdam:碎石路 碎石路
水泥 cement | 碎石路 碎石路 macadam | 砂砾 碎石 砂砾层 gravel
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macadamization:碎石铺路法,碎石筑路法
Macadamia ternifolia 昆士兰果=>マカデミアターニフォリア | macadamization 碎石铺路法,碎石筑路法 | macadamized road 碎石铺路
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tarmacadam:柏油碎石 柏油碎石路
tarmac 柏油碎石路 铺地沥青 | tarmacadam 柏油碎石 柏油碎石路 | tarmacadambindingcourse 柏油石碴层
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macadamized road:碎石铺路
macadamization ==> 碎石铺路法,碎石筑路法 | macadamized road ==> 碎石铺路 | macadamized runway ==> 碎石跑道