查询词典 reinforced concrete

Firstly, by analyzing existing models of predicting concrete carbonation and its influencing factors, a practical model of predicting the depth of carbonated concrete is proposed in this thesis, which takes the compressive strength of concrete as the main parameter and considers influence of temperature and moisture of environment, construction factors, stress condition and density of CO2 in the environment, and plenty of spot-data has been used to verify the model; By means of regression analysis of the spot-data, the calculating model of uncarbonated remainder is formulated; Considering the randomness of concrete carbonation, the paper put forward a probability analysis method of concrete carbonation span-life.

首先，论文在分析已有混凝土碳化预测模型与影响因素的基础上，建立了以混凝土抗压强度为参数，考虑环境温湿度，施工因素，应力状态及环境CO_2浓度影响的混凝土碳化深度实用模型，并利用大量工程实测数据对模型进行了验证；通过对实际工程检测数据的回归分析，给出了碳化残量的计算公式；考虑到混凝土碳化的随机性，提出了混凝土碳化寿命的概率分析方法。

Mechanized construction of high-grade highway road status, asphalt concrete, cement concrete, RCC, as well as supporting the existence of grass-roots construction machinery and accessories in the focus of questions should consider the issue of the roller compacted asphalt concrete machinery importance; cement concrete slipform paver machine as the leading equipment machines for concrete mixing equipment related to measurement and mixing homogeneity of the importance of indicators; of RCC and grass-roots construction machinery, mixing equipment is still emphasize the measurement accuracy and mixing uniformity; on the grass-roots level paver problem, development and the condition of our country to adapt the automatic leveling of the ground plane; stone processing counterattack crusher used to solve the problem of the ratio of the needle plate.

高等级公路路面机械化施工的现状，沥青砼、水泥砼、碾压砼以及基层施工机械配套存在问题和配套中重点应考虑的问题，沥青砼的碾压机械的重要性；水泥砼滑模摊铺机作为主导设备机对砼搅拌设备中有关计量及搅拌均匀性指标的重要性；对碾压砼和基层施工机械，依然强调搅拌设备的计量准确和搅拌均匀性；对基层摊铺问题，发展与我国国情相适应的自动找平的平地机；石料加工中使用反击式破碎机解决针片状比例的问题。

Again, I maintain that we should use the flexural-tensile strain and the vertical shearing stress of the bottom of cover of the joint as the target for the design of the cover structure of asphalt on the old cement concrete. In addition, on the basis of much theoretical analysis, I preliminarily put forward to a designing methods to anchor the old cement concrete road by using dog irons made of iron bars and then covering it using asphalt concrete structure. Finally, through selecting the plan of the cover of the road to be experimented, and making a detailed introduction to the techniques of construction according to the result of theoretical analysis, I know that after anchoring the slabs close to each other with dog irons made of iron, and then cover them using asphalt cement concrete has an obvious effect on preventing and slowing down the reflection cracks in the bituminous concrete skin coat over the old road.

在大量分析的基础上提出了马钉锚固罩面结构中相邻两块水泥混凝土板接缝处的相对水平位移、相对垂直位移、接缝处沥青层底部的弯拉应变和剪应变的计算公式；再次，提出了采用接缝处罩面层底部的弯拉应变、垂直剪应变作为旧水泥混凝土路面上沥青混凝土罩面结构的设计指标，并在大量理论分析的基础上，初步提出了马钉锚固旧水泥混凝土板后沥青混凝土罩面结构的设计方法；最后，根据理论分析的结果，选定试验路的罩面方案，并对其施工工艺进行了详细的介绍，表明采用钢筋马钉锚固相邻混凝土板后，再进行沥青混凝土罩面的方法在防止或减缓罩面层反射裂缝方面具有明显的效果。

The paper makes description of effective box beam construction technology and workmanship which can be adopted in other projects,such technologies as:manufacturing and fixing of reinforcement,steel reinforcement fixing baseplate,web plate and top plate respectively and lifting the steel skeleton into form,requirements of design and manufacturing and way of utilization for dismantling-erection type formwork and hydraulic formwork,optimization of concrete ratio,concrete pouring process of two ends of beam in priority over the middle,in sequence of first baseplate followed by web plate and top plate at last,concrete pouring in inclined section and in horizontal layer,concrete vibration mainly byexternal vibrator in assistance with internal vibrator,methods and regulation for steam curing of concrete,dual controls over stress and strain to ensure quality of prestressing workmanship,construction method of effective beam moving by heavy-weight special moving facility,some regulations and key notes about construction of grouting under pressure,beam ends sealing,water-proof layer on the bridge surface system,protective coating.

文中介绍的采用胎具制作和绑扎钢筋，分底腹板和顶板分别绑扎并吊装钢筋骨架入模；拆装式和液压式两种模板的设计、制作要求和使用方法；综合考虑、优化混凝土配合比，混凝土灌注从两端至中间、先底板、后腹板、再顶板的施工顺序和斜向分段、腹板水平分层、附着式振捣为主、插入式捣固为辅的施工工艺，蒸汽养护的方法和规定；应力～应变双控制确保预应力施工质量的施工技术；采用重物移运器有效移梁的施工方法；压浆、封端、桥面防水层和保护层施工的一些规定和注意事项等都是对箱梁制造行之有效的施工技术和施工方法，并可为以后类似施工作借鉴。

Construction of concrete pump is used to enhance the height of 30 1 300M, the thickness of more than 0.5M mass concrete, with savings of manpower, material and time is short, high efficiency, fast and convenient features, concrete pumping concrete on the mobility of higher, the need to control slump at 12-16 cm between the silo slipform request the initial setting of concrete, final setting time control at 2 hours and 20 minutes, 3 hours and 30 minutes or so, stick to prevent mold, in favor of Waterloo or.

混凝土输送泵施工，是用于提升高度30一300M，厚度0.5M以上的大体积混凝土，具有节省人力、物力、时间短、效率高、快捷方便的特点，但泵送混凝土对混凝土的流动性要求较高，坍落度需要控制在12—16厘米之间，筒仓滑模要求混凝土的初凝、终凝时间控制在2小时20分、3小时30分左右，可防止粘模，利于滑升。

One cycle of operation to take Silo body construction, the construction procedure as follows: steel banding to Silo body gantry beams assembled below -→ one-time pouring concrete 700mm high -→ early slide three trips (that is 75mm high)-→ check off the concrete slipform system appropriate degree and working conditions -→ continue pouring concrete 500mm high -→ then slip trip or three -→ pouring concrete to template missing -→ normal sliding each slide or 500mm high -→ stratified cross - lap steel banding -→ pouring concrete 500mm high -→ Waterloo or 500mm high -→ 4 in accordance with the procedure after Silo body pouring until the completion of cycle.

其中筒身施工采取循环作业，其施工程序为：绑扎筒身钢筋至组装好的门架横梁下面—→一次性浇筑混凝土700mm 高—→初滑三个行程（即75mm 高度）—→检查滑出混凝土合适度及滑模系统工作状况—→继续浇筑混凝土500mm 高—→再滑升三个行程—→浇筑混凝土至模板上口—→转入正常滑升，每次滑升500mm 高—→分层交圈绑扎钢筋—→浇筑混凝土500mm 高—→滑升500mm 高—→按后四道程序循环往复直至筒身浇筑完成。

One cycle of operation to take construction, the construction procedure as follows: steel banding to gantry beams assembled below -→ one-time pouring concrete 700mm high -→ early slide three trips (that is 75mm high)-→ check off the concrete slipform system appropriate degree and working conditions -→ continue pouring concrete 500mm high -→ then slip trip or three -→ pouring concrete to template missing -→ normal sliding each slide or 500mm high -→ stratified cross - lap steel banding -→ pouring concrete 500mm high -→ Waterloo or 500mm high -→ 4 in accordance with the procedure after pouring until the completion of cycle.

其中筒身施工采取循环作业，其施工程序为：绑扎筒身钢筋至组装好的门架横梁下面—→一次性浇筑混凝土700mm 高—→初滑三个行程（即75mm 高度）—→检查滑出混凝土合适度及滑模系统工作状况—→继续浇筑混凝土500mm 高—→再滑升三个行程—→浇筑混凝土至模板上口—→转入正常滑升，每次滑升500mm 高—→分层交圈绑扎钢筋—→浇筑混凝土500mm 高—→滑升500mm 高—→按后四道程序循环往复直至筒身浇筑完成。

The effect factors analysis based on FEM shows that: Raising the strength of concrete and the thickness of cover concrete would delay the cracking of concrete; Stress superposition would appear due to the influence of adjacent rebar, and increasing the rebar space would postpone the time of cover cracking; Stirrup could suppress the cracking of cover concrete, however, the effect is limited and the corrosion-degree-ratio and corrosion expansive force would not increase until the cover concrete cracking happens completely.

结合有限元分析结果，对影响锈胀开裂的各因素进行了分析，结果表明：提高混凝土强度、增加保护层厚度有助于延缓保护层的开裂；相邻钢筋的存在会使钢筋之间的混凝土出现应力叠加现象，箍筋对混凝土保护层内由锈胀产生的应力具有抑制作用，但是在保护层完全开裂之前，箍筋的抑制作用有限。

Our main products are: computer automated rapid freezing and thawing of concrete tester, concrete carbonation chamber, concrete move Miriam, concrete to accelerate the conservation of boxes, concrete mixer, cement mortar conservation tank, cement rapid conservation boxes, cement paste mixer, cement glue sand mixer, cement mortar Tap Taiwan, the electric bending testing machine, making me boil marcescens, electric saws stone machine, sieve analysis of negative pressure device, Rutting Tester, Pavement Deflection Tester, rotating compaction test equipment etc..

公司主要产品有：微机全自动混凝土快速冻融试验仪、混凝土碳化试验箱、混凝土动弹仪、混凝土加速养护箱、混凝土搅拌机、水泥胶砂养护水槽、水泥快速养护箱、水泥净浆搅拌机、水泥胶砂搅拌机、水泥胶砂振实台、电动抗折试验机、雷氏沸煮箱、电动锯石机、负压筛析仪、车辙试验仪、路面弯沉试验仪、旋转压实仪等试验设备。

In the process of building and using the mass concrete structures, because of the effect of out-side condition and themselves, some faults will form in the structure, these faults will effect the bearing capability and endurance Using nondestructive testing method to test the concrete"s quality and diagnose its healthy, which has the significant sense in assessing the safety stability and research of the administering diseasesThis dissertation mostly researched the testing methods in the mass concrete structure, discussed the principles, methods, features, sphere of application of the ultrasonic testing in the mass concrete structure with faults, used dynamic FEM to simulate the testing process, discussed when the concrete structure with cracks is under the effect of the pulse, how the elastic waves propagate and what are their changing feature, Researched the principles of the first-arriving waves" phase when the cracks" depths are not same, obtained the relation between the inversion point and the cracks" depth, which has the direction sense in the application of projects,The second part of this dissertation is CT , which used the ultrasonic wave running through the tested-substance to get arriving-time of the ultrasonic wave, then inverse the image This dissertation drawed one CT program which can well present the different little cells ultrasonic wave velocity profiles of the substance, thereby to diagnose the quality of the part of the tested-substance, CT has the better using foreground..

在混凝土结构的施工及使用过程中，由于受其自身及外界各种因素的影响，常常会产生一些缺陷，对结构物的承载能力和耐久性造成严重影响，采用无损检测技术进行质量检测和健康诊断，这对混凝土结构开展安全、稳定性评估以及病害隐患治理研究具有重要意义。本论文主要针对大体积混凝土结构缺陷的检测方法展开研究工作，重点讨论了超声波法检测混凝土结构裂缝的基本原理和方法及其特点、适用范围，运用动力有限元数值模拟其检测过程，探讨了有裂缝缺陷的混凝土结构在脉冲荷载作用下弹性波的传播及其变化特征，研究了不同裂缝深度下首波相位变化规律，得出了反转临界点与裂缝深度之间的关系，这对实际工程应用具有指导意义。声波CT是一种新的无损检测技术，它是利用声波穿透被检测体获取声波接收时间，来进行计算机反演成像的技术。本文利用直射线法编制了层析成像程序，能较好地呈现被检测物体各微小单元的声波速度分布图像，从而对检测体的质量状况作出诊断评估，具有较好的应用发展前景。

I'm going tor her!

我这就去救她！

As rise are design to help keep a several toney , a brain chemical at continues lever.

SSRI被设计来帮助保持血液中的复合胺即在大脑中一个连续水平的化学物质。