水工

long-rang I/O ; RS_485; IPC ; fore-end module ; hydraulic model test ; digital communication

目前 ，国内的商业化水工模型试验系统都是基于IPC.IPC需

Based on the Saint-venant equations describing the channel flow movement, the nonlinear algebraic equations derived by the use of Preissmann weighted implicit four-point scheme are solved with the Netwon-Raphson method. A combined Gauss main-element elimination method with compress-storage technique is proposed. The relaxation iterative method for solving branch river networks is extended, which can turn the problem of any complex river networks into the problem of a series of single rivers. The coupling of hydraulic model with water quality model is built up. The combined model was applied to a large complicated river networks with numerical hydraulic structure which influenced by strong tide, storm and heave rain. Visualization of computational results is realized by means of MapInfo, which displays the computational results in fast, convenient and accurate way.

水力模型以描述河道洪水波运动的Saint-Venant方程组为基础，用Newton-Raphson方法直接求解按Preissmann加权四点格式进行离散所得的非线性代数方程组，提出了压缩存贮形式的Gauss列主元消去法并对数值解的收敛性进行了讨论；将支流流量的松弛迭代方法从树状河系推广到了环状河网，使任意复杂河网水力计算的问题都可化为一系列的单一河道的水力计算问题；建立了水力模型与水质模型的联接，初步应用于既有洪水、暴雨、强潮等综合影响，又存在多种水工建筑物及水力调度问题的大型复杂河网中的非恒定流水力、水质计算问题；利用MapInfo对计算结果的可视化进行了研究，有利于决策者快速、方便、准确地作出决策。

The elasticity of groundsill in engineering range varieties, the laws of effects on the distribution laws of seismic displacements and stresses in overflow section of gravity dam from the elasticity of groundsill are studied.

在工程常见的范围内变动坝基弹模，研究地基刚度变化对溢流坝动力特性及地震反应的影响规律，对水工建筑物规范建议采用刚性地基的观点提出了质疑。

So long as you limit yourself to superficial conditions, so long as you are a mere "hewer of wood or carrier of water" for those around you who do use their minds, you are in no better position than the beasts of burden.

如果你一直都将自己局限于表面的情境，如果你一直当自己仅仅是个"伐木工或者挑水工"，而你身边的人们却在"实实在在的应用"他们的思想，那么你也就只能当自己是行尸走肉了。

The parameters in the paper provide a basis of design and calculation for hydraulics.

所提供参数可作为水工人员设计和计算的依据。

Consulted the hydrostat discount rate method used in the tunnel lining designation to determine the external water pressure, the slope stability factor algorithm simplified osmotic pressure in aeration zone to hydrostatic pressure after discount on the basis of investigation was suggested for the first time.

以现场调查为基础，参照水工隧洞设计中考虑外水压力的水力折减系数法，首次提出了将包气带渗透力概化为经水力折减后的面力的简化算法。

Epoxy resin mortar is of common lamella repair material and has high binding strength and strong erosion—resisting merits.

环氧砂浆材料是一种常用的水工薄层修补材料，环氧砂浆具有粘接强度高，抗冲蚀能力强等优点。

In this a paper, an effective method is presented to analyse the twodimensional frame on a layered foundation.

l引言在高层建筑和水工结构物的设计中，考虑多层地基和上部结构的相互作用是一个重要而复杂的问题。

Cases including scheduled and unscheduled offtake changes are tested.

模拟了计划分水和非计划分水工况下，各闸门的操作过程和相应水位流量响应过程。

So a method that combining the model experiment and numerical computation are discussed in this paper. The flow-induced vibration response of the plane recumbent gate in ShangHai qingshui river is computed in this method, and the result is reasonable and credibility, this method can be extend to compute the other hydraulic structures like overfall dam, guide wall, gate pier and so on, which is under fluctuating pressure.

由此探讨了一种将水力模型试验跟数值计算相结合来计算闸门流激响应具体值的方法，并应用于上海清水河泵闸水下卧倒门的流激响应计算上，结果合理可靠，该方法可以推广应用于溢流坝面、导墙、闸墩等受水流脉动荷载作用的其它水工建筑物。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。