内水压力

基于Biot理论，采用多孔弹性介质的渗流-力学耦合模型，研究了内水压力作用下隧洞衬砌-围岩（土）相互作用问题。

Based on Biot ′ s theory , the interaction of surrounding rock or soil and structure in a pressure tunnel subjected to internal water pressure is investigated by using the coupled seepage-mechanical model of porous elastic medium .

地下球型洞室温度荷载与均匀内水压力联合作用下的应力计算

The stress computation of underground sphere caverns in the combined action of thermal load and uniform internal water pressure

内水压力下弯管结构应力计算分析

Stress Calculation and Analysis of Elbow Under Inner Water Pressure

水电站蜗壳联合承载结构内水压力荷载分配规律的研究

Research on the Distribution Rules of the Internal Water Pressure in the Hydropower Station Spiral Case Combined Bearing Structure

本文建立了盾构机内水压力递减模型，基于模型推导了水压力和流量的变化关系来用于解释喷涌发生的机理。

In this paper , the relation model of water pressure and flow is built to explain the spewing mechanism .

内水压力引起的隧洞径向位移幅值比轴对称荷载小；

The value of radial displacement induced by interior water pressure is less than that induced by axis-symmetric radial traction .

坝体变位和内水压力对坝后背管结构应力的影响

Influence of dam displacement and internal water pressure on the structural stresses of penstock laid on downstream face of dam

结果表明：钢岔管外围围岩承担了20%~40%的内水压力荷载。

The results show that the outside surrounding rock mass bears 20 % ~ 40 % load of the internal water pressure .

就极限承载能力而言，在超内水压力情况下，双层衬砌结构有较大的安全余度。

Under super inner hydraulic pressure , the liner still has large safety redundancy from the point view of limit loading capability .

内水压力是使背管产生较大环向拉应力的主要因素，是产生轴向拉应力的次要因素。

And water pressure is a main factor of loop tensile stress on penstock waist and is less important factor of axial tensile stress .

本文阐述了用力加强板增加平直形架空输水管道跨越距离的设计理论及方法，并给出了在一定内水压力下不同管径跨越不同距离时的加强板设计选用表。

This paper describes how to use strengthening steel plates to enlarge inertia moment of small steel pipe for making longer span and the design table is given .

压力钢管是水电工程中输水建筑物的重要组成部分，它承受着较大的内水压力以及自身的重量和水重。

Penstock is the important constitute of the building of water-transportation of power plant , It take on biggish inner hydraulic pressure and its own weight and watery weight .

水工建筑中，据岩体的强度特性和内水压力的大小，精确确定有压隧硐上覆岩层最小厚度是非常重要的。

As an important piece of work in hydraulic engineering , it is the key to determine the minimum thickness of overlying rock formation of the tunnel under pressure .

基于有限元法，分析了两个尾水管在各自最大内水压力条件下外围混凝土的受力，得到各自的应力变化规律和特点。

Stress of surrounding concrete of each draft tube is analysed by the finite-element method under condition of the highest hydraulic pressure and the variable regularity of stress is obtained .

提出采用取决于岩土介质孔隙率的应力系数来确定隧洞边界上衬砌（围岩）介质和孔隙水分别承担的内水压力值。

So , a stress coefficient depending on the porosity of medium is proposed to determine the value of internal water pressure in medium and in pore water , respectively .

将内水压力以体力的形式作用于隧洞衬砌和围岩，建立了高压隧洞内水外渗渗流场与应力场的耦合数值分析的计算模型。

The inner water pressure is applied to the lining block and surrounding rock as physical force , and the coupled analysis model of seepage field and stress field is formed .

针对混凝土箱涵的开裂问题，采用三维非线性有限元法，对不同的内水压力、配筋率分析了开裂的可能性。

It takes 3D nonlinear finite element method to cracking analysis for reinforced concrete box girder . Analyze the possibility of cracking during the different amount of reinforcing bar and different inside hydro pressure .

埋藏式岔管国内外基本按明管设计，围岩分担内水压力仅作为一种安全储备。本文重点介绍西龙池岔管考虑围岩分担内水压力设计成果。

Buried Y-pipes have been designed normally as exposed ones , in which internal water pressure shared by surrounding rock is taken as a safe reserve only . This paper describes mainly the design results .

模型试验主要分为粘土的渗透系数试验、测试粘土的起始水力坡降试验和测试不透水粘土层内水压力分布试验三部分。

Model test mainly divided into three parts , there were clay soil 's permeability coefficient test , clay soil 's initialized hydraulic slope test and groundwater pressure distribution regular test in water-tight clay soil stratum .

根据地下高压钢筋混凝土岔管受内水压力衬砌开裂后的渗流场变化特征，提出了高压管道内水外渗的渗流场与应力场耦合的三维有限元数值分析方法。

According to the failure features of concrete lining under seepage load , a three-dimensional numerical coupling analysis of seepage field and stress field is made on the fracture regulation of underground concrete branch pipe lining .

采用编制的正交异性三维损伤有限元程序对蜗壳结构进行损伤计算，细致地分析了钢蜗壳不同内水压力时，其外围混凝土的损伤分布规律及应力应变情况。

In this paper , with the new three-dimensional orthogonal damage finite element program , the damage distribution , stress and strain of the spiral case structure are fully analyzed in the conditions of different internal pressures .

背管内水压力对背管结构环向应力的影响表现为环向拉应力，并且管腰外缘和管顶内缘混凝土环向拉应力是混凝土设计抗拉强度的2-4倍。

The loop stresses which water pressure produces on penstock reveal tensile stress , and concrete loop tensile stress laid on penstock waist outer edge and top inner one is 2-4 times of design tensile strength of concrete .

水工压力隧洞在受内水压力作用时，衬砌将压力部分传递给围岩，同时受到围岩的被动抗力。

When the hydraulic pressure tunnel is pressed by water , the concrete of tunnel transfers the pressure to the surrounding rock mass , and it also is pressed by the rock reaction force at the same time .

结果表明，引水钢管测试部位的应变变化规律和钢管充水过程测试的应变变化规律相一致，说明引水钢管应变变化较大主要是钢管内水压力发生变化所致；

The agreement of test results with those obtained during the process of water filling process of pipes shows that the large variation of strain of steel pipes is mainly caused by the variation of water pressure in the pipes .

用三维接触单元模拟背管与坝体接触面，分析坝体变形和内水压力对李家峡坝后背管结构应力的影响。

Simulating contact face between dam and penstock laid on downstream face of dam by using 3D contact element method , and analyzing the influence of dam radial displacement and internal water pressure on the stresses in the penstock laid on downstream face of dam .

本文是在确定相关地质参数、内水压力、外水压力的前提下，通过对初始缝隙的计算，进行了围岩与压力管道联合受力及抗外压稳定的分析研究。

The text is in relevant determining geological parameters , internal water pressure , and external pressure premise , through the calculation of the initial fitting , analyzes and researches the surrounding rock by the pressure of the joint stability and resistance to external pressure .

埋藏式压力钢管布置灵活，可利用围岩分担内水压力，节省钢材且安全度高，运行可靠等优点，而被广泛应用于大中型水电站。

Underground penstock is used in water power station of middle or large scale widely , because of its obvious advantages such as being laid out flexibly , sharing internal water pressure with surrounding rock , saving steel , higher safety , performing well and so on .

埋藏式压力管道设计中要解决好内水压力下钢衬与围岩的分载比例和外水压力下钢衬的稳定性问题。

In the process of designing underground penstock , there are two aspects should be taken into account . One is how to determine internal water load proportion between steel lining and surrounding rock , the other is the stability of steel lining under external water pressure action .

有压管道结构运动对管内水锤压力的影响研究

Effect of pressure conduit structure movement on water hammer pressure