查询词典 culverts

Based on the principle of variation of earth pressures on the culverts under different conditions, including topography, span of culvert, density of fill and the type of structure, and the property of arching action above the culvert, a nonlinear earth pressure theory for culverts beneath high fill is presented, the theory suggests the earth pressure on the culverts beneath high fill can be calculated with the formula σ=ξγH〓 as the fill up to higher height.

把这种方法与其它地下洞室的土压力计算理论进行的对比分析结果表明，非线性土压力理论考虑了填土达到一定高度时在涵洞上方产生的拱效应以及土拱的不稳定性特点，其计算的土压力明显低于不考虑拱效应的低填方涵洞土压力计算值，但高于具有稳定土拱效应的地下洞室土压力理论得到的土压力。

The fruits of research in the thesis as follow:(1) The principle of variation of earth pressures on the culverts beneath the high fills are investigated in the thesis.

论文通过模型试验和数值模拟计算，研究了狭窄沟谷地形、宽坦沟谷地形、岸坡设涵和坡脚设涵四种边界条件下的高填方涵洞土压力随填土高度变化的规律，研究结果表明，在各种边界条件下，高填方涵洞涵顶土压力变化规律相似，当填土达到一定高度后，仍有部分土压力传递到涵顶上，使高填方涵洞的土压力不随填土高度成线性增加，土压力呈非线性变化，高填方涵洞的土压力明显低于理论土压力σ=γH计算值。

The test results show the principle of variation of pressures on culverts beneath high fill is similar, it is that, even if the embankment is filled up to a higher height, the earth pressures can still partly transfer to the top of culvert, as a result the pressures on the culvert increase nonlinearly with the variation of height of fill and further the pressures are obviously lower than theoretical value by σ=γH.

模型试验和数值模拟计算结果表明，当填土达到一定高度后，高填方涵洞上方将产生明显的拱效应，但由于涵洞填土为破碎的岩土，其拱效应与岩石中开挖洞室上方的拱效应不同，高填方涵洞上方填土产生的"土拱"效应具有不稳定的特点，表现为随着填土高度的增加仍有部分土压力传递到涵洞上，涵顶土压力随填土高度成非线性增加。

To simplify FEM analysis of concrete creep, the function to creep coefficient is proposed as per the Code for Design of Highway RC and PC Bridges and Culverts (JTG D62-2004), using a synthesis optimization software package "1 stopt" for stepped fitting with exponential functions.

为了便于进行混凝土徐变有限元分析，对JTG D62-2004《公路钢筋混凝土及预应力混凝土桥涵设计规范》提出的徐变系数函数，应用综合优化软件包1stopt进行分段指数函数拟合。

An average 13 culverts per mile were used, totalling 105 miles of pipe.

平均每1公里公路有8条涵洞管道，管道总长168公里。

During the night, stragglers from the Army engineer company, mostly South Koreans, but some Americans, streamed back off the hill and took cover in the ditches and culverts of Hagaru-ri itself.

在整个夜里，陆军工兵连的溃兵，主要是南朝鲜人，也有美国人，连续不断地从东山方向逃回下碣隅里的堑壕和藏身洞。

It also analyses corrosion mechanism and influence factor that corrugated steel pipe culverts in the soil, aqueous solution and atmosphere; and proposes the scheme of antisepesis of corrugated steel pipe culvers suitable for our countryAccording to the domestic construction experience and practice on the highway and railway of corrugated steel pipe culverts, this paper summarizes the construction craft of the corrugated steel pipe culverts suitable for our country, and put forward the corresponding construction requirement.

根据国内钢波纹管涵洞在公路和铁路上的施工经验和实践，分析总结出适用于我国钢波纹管涵洞的施工工艺，提出了相应的施工要求。

It has been used for box culverts structure design of Beijing project of South-North Water Transfer and other box culverts projects.

该系统荣获北京市水利规划设计研究院优秀软件一等奖，并且已经用于南水北调中线工程北京段的箱涵结构设计和北京五环路地下通道的结构设计中。

Being a general software, it not only can be used in box culverts structure design for water conservancy project but also suited to culverts structure design for highway and railway projects.

同时，该系统作为通用的箱涵结构设计软件，不仅可以用于水工箱涵的结构设计工作，而且还可以用于铁路、交通等建设领域的箱涵的结构设计之中。

According to the calculation data of experimental culverts, Calculation results of all kinds of theories formula, experience method about soil pressure of culverts are compared with measure data.

结合本次测试涵洞的有关计算数据，将国内外现有上埋式构筑物的垂直土压力各种理论公式、经验方法的计算结果与实测值作了图示比较，讨论了各种方法的优缺点，并给出求解涵洞土压力的建议公式。5。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐