Design Method and Calculations for Concrete Telescope Support(06-2011)

1. Design Method and Calculations for Concrete Telescope Support(06-2011) Dr. Wu Di , Ph.D. Assistant Professor of Civil EngineeringGuangzhou University

2. China

3. Tongji University 70652 students The history of Tongji University can be traced back to 1907 when Tongji German Medical School was founded by the German government together with the German physicians Erich Paulun, a German doctor in Shanghai. The name Tongji suggests cooperating by riding the same boat. The school was expanded to include engineering in its programs and got its new name as Tongji Medical and Engineering School in 1912...

4. Tongji University in Shanghai

5. Guangzhou University Professor ZhouDean of our CenterAcademician of Chinese Academy of Engineering

6. 研究成果 广州天河商旅 广州信合大厦 东莞黄河大厦 深圳国际市长大厦 佛山信息大厦 深圳福田商城 万国名人广场 广州中房大厦 ②高层高耸结构振动台试验 6

7. Canton Tower 610m Shaking Table Test ofCanton Tower

8. 教育部科技进步一等奖、省科技进步二等奖 经济效益最大的隔震工程:北京地铁地面枢纽平台上住宅楼隔震工程 • Platform（2000m1500m） 17 Buildings 9 floors • 227,000m^2 • First Prize of Ministry of Education in China 8

9. 一、优势与建设情况 MTS Shaking table(4mx4m，25吨) Compression-shear System(1500吨) THE ELECTRO HYDRAULIC SERVO Actuator(350吨) Ultrasonic tester

10. Concrete Telescope Support Bearing Capacity

11. Concrete Telescope Support Bearing Capacity Foundation bearing capacity Soil bearing capacity The soil report of Dames & Moore of Honolulu Concrete telescope support bearing capacity Foundation bearing capacity control Foundation settlement control Structural bearing capacity Deflection control Crack-resistance and crack width control Bearing capacity and stability capacity control Fatigue capacity control

12. Structural bearing capacity SAP Solid Slab Model ANSYS H-Beam Model Multiporous Slab Criterion:Bending Rigidity(EI) • The American Concrete Institute code (ACI318) • Normal Structure • Measure the maximum internal force in Load combination • Complex Structure • Input the Character by Programmer • Measure the maximum internal force in one load condition

13. Condition:Dead Load • Concrete 156lbs/cuft • telescope 3*212,000lbs Concret Wall clamped at the foundation. • And I got the 5 different frequencies of PIER as follow: • SET TIME/FREQ • 5.5203 -> This is the swing of 4th floor in vertical direction • 2 6.9217 -> This is the swing of 3rd floor in vertical direction • 6.9601 -> This is the swing of 2nd floor in vertical direction • 4 10.694 ->This is the swing of whole structure • 5 10.694 ->This is the swing of whole structure

14. Ansys Results Force of structure in the ring direction(N) Force of concrete wall in the ring direction(N) Shear force of the 2rd floor beams in one direction Bending moments of the 2rd floor beams in one direction

15. Foundation Bearing Capacity Control Input: L=1000mm bc=1000mm hc=200mm b=7’4”=2.24m H=2’=610m Concrete fc ＝ 9.554N/mm ft ＝ 1.101N/mm Steel Bar fy ＝ 165N/mm as ＝ 50mm Minimum reinforcement ratio= 0.15% fsoil=4000psf=191.52kpa …….. e--Eccentricity

16. CHARACTERISTIC VALUE OF SUBGRADE BEARING CAPACITY fak ＝ 159.6kPa Punching shear checking computation: Fl ≤ 0.7 * βhp * ft * am * Ho （ 8.2.7-1）　 am ＝ (at + ab) / 2 （8.2.7-2）　 Fl ＝ pj * Al （ 8.2.7-3） V ≤ 0.7 * βh * ft * bo * Ho （7.5.3-1）　 X Direction： MⅠ ＝ (b - hc) ^ 2 * (2l + bc) * (p - G / A) / 24 ＝ (2.24-0.2)^2*(2*1+1)*(305.2-224.6/2.24)/24 ＝ 106.6kN·m Y Direction： MⅡ ＝ (l - bc) ^ 2 * (2b + hc) * (p - G / A) / 24 ＝ (1-1)^2*(2*2.24+0.2)*(305.2-224.6/2.24)/24 ＝ 0.0kN·m Fl ≤ ω * βl * fcc * Al Fl ≤ ω * βl * fcc * Al （5.1-1）　 Minimum reinforcement ratio= 0.15% Result of trial calculation: Nk ＝ 340kN； Mkx'＝ 0； Mky'＝ 0； Vkx ＝ 0； Vky ＝ 0 Shear checking computation: Bending moment checking computation: Partial capacity calculation of column Reinforcement calculation

17. Thank You ! Thanks the help of CFHT Corporation and DSL! Thanks the help ofprofessor Stiemer, Mathieu and Andy!