亞AJAOKUTA 100MW燃氣發(fā)電項目 結構設計說明書 2012[1].10.20

1、4.10 Civil Structure and Foundation4.10.1Design parameters 設計參數(shù)Reference Wind Pressure: 0.40kN/m2，terrain roughness class B.Seismic Design Parameters: The seismic precautionary intensity of the plant area will be assumed 7 degree, and the design basic acceleration of ground motion will be 0.15g，the

2、pant area is located in earthquake group 2.0.Site classification： class The stage due to failure to provide detailed geological report, design parameters are provisional supposition.基本風壓：0.45kN/m2,地面粗糙度為B類。地震參數(shù)：場地抗震設防烈度為7度，設計基本地震加速度值為0.15g，設計地震分組為第二組。場地類別：類。本階段因未提供詳細的地質(zhì)報告，以上設計參數(shù)均為臨時假定。4.10.2Ground t

3、reatment and Foundation地基處理與基礎1） Ground treatment地基處理According to the existing data and the process load requirements, the project site soil engineering property is poor, natural foundation soil characteristic value is low, cannot satisfy the power plant main building to build the bearing capacity a

4、nd deformation requirements, needs to use the artificial foundation.The main building ( including gas turbine foundation, main control room, chemical water etc.) plans to use in-situ concrete pile, pile diameter of 600mm, length 20.0m, characteristic value of single pile bearing capacity by about 10

5、00KPa consider; other ancillary building structures as possible use of natural foundation, such as natural foundation can not meet the requirements, the graded sand&gravel or rubble concrete replacement treatment. 根據(jù)現(xiàn)有的資料以及工藝荷載工況要求，本工程廠址場地土工程性質(zhì)較差，天然地基土特征值較低，不能滿足電廠主要建（構）筑物的承載力及變形要求，需要采用人工地基。對于主要建

6、（構）筑物（包括燃氣輪機基礎、主控室、化學水車間等）擬采用鋼筋混凝土灌注樁，樁徑為600mm，樁長20.0m，單樁承載力特征值按照1000KPa左右考慮；其它附屬建（構）筑物盡可能采用天然地基，如天然地基不能滿足要求，則采用級配砂石或毛石混凝土換填處理。This stage of the geological report, the above parameters are for reference near the power plant of geological data. The follow-up work need to provide the plant in geologic

7、al report.本階段暫無地質(zhì)報告，以上參數(shù)均為參考臨近電廠地質(zhì)資料。后續(xù)工作的開展需要提供本廠區(qū)的地質(zhì)報告。2） FoundationGas turbine foundation using block foundation. Other subsidiary and auxiliary building to build the foundation according to the magnitude of load using cast-in-place reinforced concrete independent foundation or strip foundation燃氣

8、輪機基礎采用大塊式基礎。其余附屬及輔助建（構）筑物基礎根據(jù)荷載大小采用現(xiàn)澆鋼筋混凝土獨立基礎或條形基礎。4.10.3Gas turbine arrangement and selection of main structural燃氣輪機布置及主要結構選型1） Gas turbine燃氣輪機布置Gas turbine with outdoor arrangement, parallel arrangement. The chimney from the manufacturers supply, arranged in a gas turbine side. Gas turbine founda

9、tion using block foundation. 燃氣輪機采用露天布置，平行排列。煙囪由廠家供貨，布置在燃氣輪機一側。燃氣輪機基礎采用大塊式基礎。2） Structures in electric area電氣建（構）筑物The foundations of transformers will be RCC tructure.Fireproofing wall will be adopted between generator transformer, unit transformer and station transformer to meet the fireproofing r

10、equirements between equipment. 變壓器基礎為鋼筋混凝土結構。主變之間設置防火墻，滿足設備間防火要求。Main control room building will be of four-storied steel frame structure.主控樓采用四層的鋼結構框架。3） Structures in chemical water treatment area 化學水建（構）筑物 DM water plant will be of steel frame structure, RCC independent foundation. the floors wil

11、l be of cast-in-situ reinforced concrete. 化學水處理室采用鋼結構框架；現(xiàn)澆混凝土樓板。 DM water assay building adjoins the DM plant, It is a two-storied building and will be steel frame structure, the floors will be of cast-in-situ reinforced concrete, but it is relatively separate to the workshop, there is a anti-seismi

12、c joint between the two buildings, meeting the requirements of codes. 化驗樓與化學水處理車間毗鄰，共兩層，為鋼結構框架,現(xiàn)澆鋼筋混凝土樓板。兩建筑物相對獨立，中間設抗震縫滿足規(guī)范要求。 The outdoor equipment foundations will be RCC slab foundations. 化水室外除鹽水箱等設備基礎采用鋼筋混凝土板式基礎。4.10.4 Seismic design 抗震設計The seismic precautionary intensity of the plant area wil

13、l be assumed 7 degree, and the design basic acceleration of ground motion will be 0.15g，group for the second group seismic design, site for the class . This project belongs to general electric power facilities, should be strictly in accordance with the " Code for seismic design of buildings &qu

14、ot; ( GB 50011-2010 ), " Design rule for combined-cycle power plants" ( DL/T 50174-2003 ), " Code for design of seismic of electrical installations " ( GB 50260-1996 ) and " Technical code for the design of civil structure of fossil-fired power plant " ( DL/T 5022-2012 ). The relevant provisions, the main plant, combustion engine room and other major production built to build according to the plant of seismic fortification intensity required to take me