Bir hal yapısında ekonomik sistem araştırması
Başlık çevirisi mevcut değil.
- Tez No: 46453
- Danışmanlar: PROF.DR. YALMAN ODABAŞI
- Tez Türü: Yüksek Lisans
- Konular: İnşaat Mühendisliği, Civil Engineering
- Anahtar Kelimeler: Betonarme, Maliyet, Taşıyıcı sistemler, Çelik-metal, Reinforced concrete, Cost, Supporting systems, Steel-metal
- Yıl: 1995
- Dil: Türkçe
- Üniversite: İstanbul Teknik Üniversitesi
- Enstitü: Fen Bilimleri Enstitüsü
- Ana Bilim Dalı: Belirtilmemiş.
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: Belirtilmemiş.
Özet
Steel structural systems have been designed under effect of dead loads and wind loads ( or earthquake ). It has been used Turkish Standart (TS.498) for the obtained loads. In this study the stress and stability controls of the members have been performed in accordance with the Turkish Standard. (TS.648).. For tension members: °=£ *“. An - net cross-section area. For compression members: Turkish standards allow an upper limit for the slendemess ratio of tension and compression members. *?-$? ''-JS =ycv m *.* =V^y +7*X”<25° ??-$ ) X, o=w*- -<o".. For the members subjected to axial force and bending moment, 'eb CM*abx 'bem..+ C^^ ^Q ^ 1- 'eb fbx_ < 0.6 *aa+oBx aBy Bx 'By ^eb °bx aby Maximum deflection is restricted by the value of ( L/300 ). vm
Özet (Çeviri)
SUMMARY THE SEARCHING ANECONOMICAL SYSTEM FOR 1HE STRUCTÜRES USING ON ACOVERED MARKET-PLACE in Civil Engineering, safbty, dıuability and economy are three main design critetias. Designers uy to find out how to create the most usable and the strongest buüdings vvith the lovvest expenditurs. Tbe factor of economy is getting more important in bırilding industıy. So, designers have to find out difibrent systems vvith diflEerent materialsfor the economy. Tbemainpurposeofthis study, is to seaiühtbe different typo of steel structural systems tbat hava the economic results. in addition, different materials that can be used on these structures, are used for the seaıcbing economical results. The chosen arca has forty to sixty-six meters dimension plan. it can be used a colunm in 40 m. span for the structural systems. With the aim of finding out the most economical system, it searohed four steel structures, two fixed systems and two prefabricated systems on this arca. Matenal expenditutes of ali systems would be given as a table after some required calculations. This obtained results would be multiply by the unit costs to find out the total costs of the systems. Unit costs of structure materials have been taken from some buüding companies. Unit costs of ali systems have been given as a table at the end ofovmparts. Four steel structural systems have been analyzed for their şelf weigh per unit aıea as the economy index. The obtained results have been evaluated in order to identify the most economic steel structural system compared with the others considered in this study. The plane truss systems ör fiames considered here in vvith covering forty to sixty-six meters plain aıea were designed by supporting in every six meter at sides of 66 m. span. At the first part of this study, four structural systems have been considered for the steel structures. Ih figüre (l.b)&(l.d), plain truss systems have been chosen. in figüre (l.a)&(l.c), plain fiames have been chosen. in these choose, there vvere used some economic research for the someparts of the structures. These obtained results have been shovvn at the part of results of the study in a table. VTTSteel structural systems have been designed under effect of dead loads and wind loads ( or earthquake ). It has been used Turkish Standart (TS.498) for the obtained loads. In this study the stress and stability controls of the members have been performed in accordance with the Turkish Standard. (TS.648).. For tension members: °=£ *“. An - net cross-section area. For compression members: Turkish standards allow an upper limit for the slendemess ratio of tension and compression members. *?-$? ''-JS =ycv m *.* =V^y +7*X”<25° ??-$ ) X, o=w*- -<o".. For the members subjected to axial force and bending moment, 'eb CM*abx 'bem..+ C^^ ^Q ^ 1- 'eb fbx_ < 0.6 *aa+oBx aBy Bx 'By ^eb °bx aby Maximum deflection is restricted by the value of ( L/300 ). vmIh all systems it has been used a static analysis program as a SAP90 (Structural Analysis Program) Explanation and calculation criterias of the systems can be summarized as follows.. System.1: Bottom point of columns of this fiamc is formed by articulation. There is a rigid connection between at the top of column and beam. Two different sections have been used for the frame. These are profil and specially prepared section (from plates). So, it has been searched which section is more economical.. System.2: As it shown in figure (l.b), trapezoidal plain truss system have been chosen. There are used two differrent sections, T+L and J +L on plain truss system. It has been detennined any difference costs for these sections. In addition, this system is determined as the most economical system in the steel structures.. System.3: Members of this system are formed by specially prepared sections (from plates). According to the results, this system is the most expensive all systems.. System.4: It has been used a plain truss system instead of beam at Sistem.3. There is a used +L sections on plain truss system. This system is cheaper than sistem.3.. System.5-6: In this system; structural systems would be formed by different materials. Li these systems, the columns would be made of reinforced concrete and the plain frames would be made of steel. The columns formed by B225 and S 1111 as a material. At the end of this part, the obtained results would be given as an economy index. hi column design, a computer program (BMP89) has been used. This program has been improved by Prof. Dr. Mian KIRAL and Prof. Dr. Cengiz DÜNDAR of Çukurova University. This program named as (Civil Engineering Program) finds the results after a serial of analysis and iterations.. Prefabricated systems: At the part of this study, prefabricated systems would be searched for the searching economical results. There would be searched two prefabricated systems, which are the atcost and plain frame systems. All the results of this part has been taken from a project of Gök Building Company. The obtained results would be given as an In figure 2, it has been shown the general disposition of system». This general disposition has also been used on the others. DC
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