水电站预应力闸墩设计分析

Forewords

Introduction

1.1 General of the project

1.2 Layout of weirs

1.3 Layout of piers

1.4 Design of tainter gate support

1.5 Arrangement of prestressed tendons

Basic parameters and design principles

2.1 Basic parameters

2.1.1 Characteristic water levels

2.1.2 Water surface profile on the pier

2.1.3 Unit weight of water

2.1.4 Properties of rock foundation

2.1.5 Properties of concrete

2.1.6 Properties of tendons

2.1.7 The thrust of tainter gate

2.1.8 Tonnage of the prestressed tendons

2.1.9 Earthquake parameters

2.1.10 Temperature load

2.1.11 Thrust of the bulkhead gate

2.2 Limit states of concrete

2.3 Loads and load combinations

2.3.1 On the middle pier

2.3.2 On the side pier

Numerical model of the pier

3.1 Assumptions

3.2 Region of finite element analysis

3.3 Boundary conditions

3.4 Model of the pier

3.4.1 Coordinate system

3.1.2 The FEM model

3.5 Analysis procedures

4 Results of the middle pier

4.1 Definitions

4.1.1 Coordinate systems

4.1.2 Stress

4.1.3 Displacement and deformation

4.1.4 Characteristic sections

4.1.5 Key points

4.1.6 The paths

4.1.7 Terminology

4.2 Results of the stresses

4.2.1 Anchorage block

4.2.2 Bearing area of the pier

4.2.3 The upstream vertical anchorage well

4.2.4 The intersecting line of pier body with base plate

4.2.5 The slot of the tainter gate

4.2.6 Bulkhead slot

4.2.7 The galleries

4.3 Results of the displacements

4.3.1 Anchorage block

4.3.2 Bearing area of the pier

4.3.3 The upstream vertical anchorage well

4.3.4 The intersecting line of pier with base plate

4.3.5 The tainter gate slot

4.3.6 The bulkhead slot

4.3.7 The galleries

4.3.8 Contour map of the displacements

5 Results of the side pier

5.1 Definitions

5.1.1 Coordinate systems

5.1.2 Stress

5.1.3 Displacement

5.1.4 Characteristic sections

5.1.5 Key points

5.1.6 The path

5.1.7 Terminology

5.2 The results of stresses

5.2.1 Anchorage block

5.2.2 Bearing area of the pier

5.2.3 The upstream vertical anchorage well

5.2.4 The intersecting line of pier with base plate

5.2.5 The slot of the tainter gate

5.2.6 Bulkhead slot

5.3 Results of the displacements

5.3.1 Anchorage block

5.3.2 Bearing area of the side pier

5.3.3 The upstream vertical anchorage well

5.3.4 The intersecting line of side pier with base plate

5.3.5 The tainter gate slot

5.3.6 The bulkhead slot

5.3.7 Contour maps of the displacements

Conclusions

6.1 The middle pier

6.1.1 The stresses of main parts

6.1.2 The displacements of main parts

6.2 The side pier

6.2.1 The stresses of main parts

6.2.2 The displacements of main parts

6.3 Suggestions

Appendix-A Anchor-plans comparison of vertical anchorage well with anchorage cavities.

Appendix-B Stress of the anchorage region of prestressed tendons

Appendix-C Stress band plot in the unfavorable load cases

Appendix-D Constant value line figures of stresses

References

《水电站预应力闸墩设计分析（英文版）》系统介绍了巴贡水电站溢洪道预应力闸墩的三维有限元分析结果，详细描述了中墩和边墩关键部位的应力和变形情况，分析了锚固区应力受预应力施加方式的影响，比较研究了竖井和锚拉洞两种锚固方案。