Structure Design Draft Tube of Xiaoshankou Hydropower Station

2013 ◽  
Vol 380-384 ◽  
pp. 4159-4162
Author(s):  
Ying Bin Kang ◽  
Abdurxt Rjap ◽  
Kun Huang
Keyword(s):  
Draft Tube ◽  
Internal Force ◽  
Space Structure ◽  
Structure Design ◽  
Hydropower Plant ◽  
Load Calculation ◽  
Pipe Segment ◽  
Force Calculation ◽  
Bearing Structure ◽  
And Diffusion

This The draft tube is one of the main load-bearing structure of the hydropower plant, The hydropower draft tube of Xiaoshankou is an underground space structure, mainly composed by the taper pipe segment, elbows segment and diffusion segment. This paper describe the structure design and calculation process of Xiaoshankou hydropower draft tube, including the draft tube load calculation, structural mechanics just Rigid panels calculate internal force calculation and reinforcement calculation.

Optimum Design for the Independent Foundation Based on Parameterized Model and Criteria Method

2014 ◽  
Vol 1044-1045 ◽  
pp. 616-619
Author(s):  
Hai Yan Lu ◽  
Tong Xing ◽  
Wen Bo Bao
Keyword(s):  
Optimal Design ◽  
Optimization Design ◽  
Parametric Design ◽  
Design Method ◽  
Internal Force ◽  
Structure Design ◽  
Foundation Design ◽  
Existing Building ◽  
Parameterized Model ◽  
Force Calculation

Through building dynamic foundation configuration database based on the parametric design models, an efficient optimization design principle suitable for independent foundation design is put forward combining with the existing building structure design codes. Using the object oriented language VB to develop independent foundation optimization design programs, to realize reading in internal force calculation data of the upper structure from SATWE software, then the program searches automatically for the optimal solutions .The optimal design of practical projects illustrates the feasibility of the proposed optimal design method.

Structural Analysis and Internal Force Calculation of Variable Cross-Section Silo

2012 ◽  
Vol 446-449 ◽  
pp. 429-434
Author(s):  
Rui Ting Ma
Keyword(s):  
Cross Section ◽  
Variable Cross Section ◽  
Internal Force ◽  
Variable Cross ◽  
Axially Symmetric ◽  
Internal Forces ◽  
Differential Element ◽  
Symmetric Load ◽  
Force Calculation ◽  
Constant Section

In this paper, the differential element of constant-section silo wall suffering from axially symmetric load is analyzed. From the results of constant-section silo, the author derives the displacements and internal forces of variable cross-section silo. Through a specific example, this paper compares the displacements , internal forces and concrete consumption of variable cross-section silo with those of constant-section silo, and discusses the merits of variable cross-section silo.

Internal force calculation of half through arch bridge based on elastic foundation beam algorithm

2021 ◽  
Author(s):  
Yurong Ma ◽  
Yuyi Zhang ◽  
Qianwen Han ◽  
Feng Wang ◽  
Yaqiong Jiang ◽  
...  
Keyword(s):  
Elastic Foundation ◽  
Internal Force ◽  
Arch Bridge ◽  
Force Calculation ◽  
Elastic Foundation Beam

Properties Analysis of Bolted Composite T-Joint

2011 ◽  
Vol 467-469 ◽  
pp. 575-578 ◽  
Author(s):  
Zhen Qing Wang ◽  
Song Zhou ◽  
Jian Sheng Zhou ◽  
Xiao Yu Sun
Keyword(s):  
Composite Materials ◽  
Structure Design ◽  
Ship Structure ◽  
Advanced Composite ◽  
Advanced Composite Materials ◽  
Bonded Joint ◽  
The Common ◽  
Mechanical Performances ◽  
Composite Ship ◽  
Bearing Structure

Composite materials not only have good mechanical performances but also have excellent durability and ability to be formed into complex shape. So advanced composite materials are used extensively in ship industry. In the composite ship structure the T-joint is one of the common joint in practice. As the main load-bearing structure of ship, the mechanical and reliability designs of T-joint are the important aspects of the ship structure design. The traditional composite T-joint is bonded joint, and adhesive strength has obvious influence on the properties of T-joint. To improve the properties of composite T-joint, in this paper the bolted composite T-joint is chosen for studying. Finite element method is used to investigate the properties of bolted T-joint. The influences of bolt-clamping load and friction coefficient on the stress distribution of bolt-hole edge are investigated. Some conclusions can be used as references for the design of bolted composite T-joint.

scholarly journals Correspondence Analysis of Soil around Micropile Composite Structures under Horizontal Load

2015 ◽  
Vol 2015 ◽  
pp. 1-12
Author(s):  
Hai Shi ◽  
Mingzhou Bai ◽  
Chao Li ◽  
Yunlong Zhang ◽  
Gang Tian
Keyword(s):  
Theoretical Approach ◽  
Composite Structures ◽  
Internal Force ◽  
Current Approach ◽  
Winkler Foundation ◽  
Beam Model ◽  
Horizontal Load ◽  
Pile Deformation ◽  
Rigidity Coefficient ◽  
Force Calculation

The current approach, which is based on conformal transformation, is to map micropile holes in comparison with unit circle domain. The stress field of soil around a pile plane, as well as the plane strain solution to displacement field distribution, can be obtained by adopting complex variable functions of elastic mechanics. This paper proposes an approach based on Winkler Foundation Beam Model, with the assumption that the soil around the micropiles stemmed from a series of independent springs. The rigidity coefficient of the springs is to be obtained from the planar solution. Based on the deflection curve differential equation of Euler-Bernoulli beams, one can derive the pile deformation and internal force calculation method of micropile composite structures under horizontal load. In the end, we propose reinforcing highway landslides with micropile composite structure and conducting on-site pile pushing tests. The obtained results from the experiment were then compared with the theoretical approach. It has been indicated through validation analysis that the results obtained from the established theoretical approach display a reasonable degree of accuracy and reliability.

scholarly journals Impact Pseudostatic Load Equivalent Model and the Maximum Internal Force Solution for Underground Structure of Tunnel Lining

2016 ◽  
Vol 2016 ◽  
pp. 1-16
Author(s):  
Xuan Guo ◽  
Xiao Xin Zhang
Keyword(s):  
Model Test ◽  
Internal Force ◽  
Measured Data ◽  
Tunnel Lining ◽  
Theoretical Solution ◽  
Equivalent Model ◽  
Theoretical Formula ◽  
Circular Tunnel ◽  
Lining Structure ◽  
Force Calculation

The theoretical formula of the maximum internal forces for circular tunnel lining structure under impact loads of the underground is deduced in this paper. The internal force calculation formula under different equivalent forms of impact pseudostatic loads is obtained. Furthermore, by comparing the theoretical solution with the measured data of the top blasting model test of circular formula under different equivalent forms of impact pseudostatic loads are obtained. Furthermore, by comparing the theoretical solution with the measured data of the top blasting model test of circular tunnel, it is found that the proposed theoretical results accord with the experimental values well. The corresponding equivalent impact pseudostatic triangular load is the most realistic pattern of all test equivalent forms. The equivalent impact pseudostatic load model and maximum solution of the internal force for tunnel lining structure are partially verified.

An analysis of the impact of draft tube modifications on the performance of a Kaplan turbine by means of computational fluid dynamics

2017 ◽  
Vol 232 (11) ◽  
pp. 1937-1952
Author(s):  
Juergen Schiffer ◽  
Helmut Benigni ◽  
Helmut Jaberg
Keyword(s):  
Fluid Dynamics ◽  
Computational Fluid Dynamics ◽  
Draft Tube ◽  
Vertical Axis ◽  
Hydropower Plant ◽  
Construction Costs ◽  
Turbine Efficiency ◽  
Kaplan Turbine ◽  
The Cost ◽  
The Impact

Due to the low electricity prices in central Europe, cost optimisations related to all parts of a new hydropower plant have become increasingly important. In case of a run-of-river hydropower plant using a vertical axis Kaplan turbine, one of the cost drivers are the excavation works. Thus, a decisive factor for the reduction of construction costs is the minimisation of the construction depth of the elbow-type draft tube. In course of the design phase of a new hydropower plant in Austria, an analysis of the impact of draft tube modifications on the performance of the Kaplan turbine was carried out by applying computational fluid dynamics. The net head of the turbine with a diameter of D = 3.15 m accounts for Hnet = 9.00 m and the maximum discharge per unit is Qmax = 57.5 m3/s. After it was proven that there is a good agreement of the numerically calculated and experimentally measured turbine efficiency for the original turbine configuration, various draft tube designs were tested in order to find out their impact on the turbine efficiency and to analyse the sources of draft tube losses in detail. Finally, it was possible to find a new draft tube design representing a compromise of reduced construction costs and acceptable turbine efficiency.

Sign in / Sign up

Export Citation Format

Share Document