Solar Power Plant in Haixi, China
Customer Project
In the Chinese province of Qinghai, near the city of Haixi, a complex of 23 multi-energy plants is being built, combining different technologies to generate energy from renewable resources. The complex comprises a 618.4 ft high tower of the 50-MW solar power plant whose support structure is expected to be completed in mid-2019.The solar power plant uses a modern CSP (Concentrated Solar Power) technology, which enables the storage of thermal solar energy, thus ensuring continuous power generation even at night.
| Investor: |
Luneng Group Co., Ltd. |
| Steel Structure Design: |
Allcons Industry s.r.o. |
| General Contractor |
Shandong Electric Power Construction Corporation III (SEPCO III) |
| Technology Designer |
Cockerill Maintenance & Ingenierie s.a. (CMI) |
Tower Parameters
Model
Using a system consisting of hundreds of mirrors, the sunlight is concentrated in a receiver located at the top of the tower. At the receiver, the absorbed solar energy is converted into thermal energy by heating the salt liquid (Molten Salt Liquid - MSL), which is then stored in a container for up to 12 hours. The steam that is heated by the MSL solution in the steam generator drives a turbine that powers the generator.
Structure
The tower construction consists of a lower reinforced concrete part with a height of 483.9 ft and a 134.5 ft high steel construction of the solar receiver. The design of the steel structure of the receiver was created in the RFEM program by the Czech company ALLCONS Industry s.r.o., a customer of Dlubal Software.
Since the solar power plant complex is located in an earthquake area high above sea level, where severe weather conditions prevail, it was quite challenging to design the steel structure. In addition, all calculations had to be performed according to Chinese standards. When designing the steel structure of the receiver, variable temperature conditions at the receiver had to be taken into account, because the solar panels' surfaces are exposed to a heat flux in sunlight that is 1000 times larger than the normal solar flux. To ensure a smooth expansion between the steel and concrete parts of the structure, a special multi-level anchoring system has been developed to allow movement of the structure in the radial direction.
With regard to the height and cylindrical shape of the tower, it was necessary to also take the wind load into account, which may result in a transverse vibration due to wind turbulences. Calculations on the effects of wind and seismicity were performed on a complete tower model in RFEM, which is why a close cooperation with the Chinese team that designed the lower concrete part of the tower was necessary. Thanks to the good mutual cooperation, it was possible to reach an agreement in the results of both teams with a maximum deviation of 1%.
Write Comment...
Write Comment...
Contact us
Do you have questions or need advice?
Contact our free e-mail, chat, or forum support or find various suggested solutions and useful tips on our FAQ page.
New
Automatically ignore curved c/t-parts when classifying cross-sections
The classification of cross-sections according to EN 1993-1-1 and EN 1993-1-5 can be carried out automatically in the RF-/STEEL EC3 add-on module. The maximum c/t ratios are specified in the standard for straight cross -section parts. There are no normative specifications for curved cross -section parts and therefore the cross -section classification cannot be performed for these cross -section parts.
![Distribution of Forces and Moments in Column Base According to [1]](/-/media/Images/website/img/000001-010000/009601-009700/009638.png?la=en&mlid=7D34CEAAE7354583A29169095622B515&hash=D5A1CD829CEAC6F92DF0C68F3F0F37A7E0C0E89B)
![System and Loading According to [1]](/-/media/Images/website/img/000001-010000/009601-009700/009634.png?la=en&mlid=F0F0A23924B8424CA1C2905961DF676B&hash=6AC023A421BDDF6BFE2AC5D69132D2F81A0C365A)
SHAPE-THIN | Cold-Formed Sections
SHAPE-THIN determines the effective cross-sections according to EN 1993-1-3 and EN 1993-1-5 for cold-formed sections. You can optionally check the geometric conditions for the applicability of the standard specified in EN 1993‑1‑3, Section 5.2.
The effects of local plate buckling are considered according to the method of reduced widths and the possible buckling of stiffeners (instability) is considered for stiffened sections according to EN 1993-1-3, Section 5.5.
As an option, you can perform an iterative calculation to optimize the effective cross-section.
You can display the effective cross-sections graphically.
Read more about designing cold-formed sections with SHAPE-THIN and RF-/STEEL Cold-Formed Sections in this technical article: Design of a Thin-Walled, Cold-Formed C-Section According to EN 1993-1-3.
- How is it possible to consider the real cross-section geometry of member elements in RWIND Simulation?
- How can I get the member end forces to design the connections?
- I would like to calculate and design "temporary structures." What do I need for this?
- How can I perform the design of the tension resistance of a smooth column in a smooth bucket column base, that is, the design against pulling out the column?
- How can I create a drilled beam in RFEM?
- For which programs is the STEEL Warping Torsion add-on module available?
- Which programs can I use to calculate and design power plants?
- In the RF‑/STEEL EC3 add-on module, I obtain an extremely high design ratio for a member in the case of "Biaxial bending, shear and axial force." Although the axial force is relatively high, the design ratio seems to be unrealistic. What is the reason?
- I have just noticed that the STEEL EC3 add-on module also calculates with γM0 = 1.0 when designing a tension member, although it should actually be γM2 = 1.25. How can I perform the design correctly?
- I design a cross-section created in the SHAPE‑THIN program by using the RF‑STEEL EC3 add-on module, but the program shows the error message "ER006 Invalid type of c/t-part for cross-section of type General." What can I do?
Programs Used for Structural Analysis
Main Program
Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements
3,540.00 USD
Add-on Module
Design of steel members according to the Chinese standard GB 50017-2003
1,480.00 USD
Add-on Module
Stress analysis of steel surfaces and members
1,030.00 USD
Add-on Module
Dynamic analysis of natural frequencies and mode shapes of member, surface, and solid models
1,030.00 USD
Add-on Module
Seismic and static load analysis using the multi-modal response spectrum analysis
760.00 USD
Add-on Module
Dynamic and seismic analysis including time history analysis and multi-modal response spectrum analysis
1,120.00 USD
