Lake Pont Tower m m Fg 2 2 Schematc dagram of temporary supports 1 Fg 1 Whole structure A

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1 Journal of South Chna Unversty of Technology Natural Scence Edton Vol 45 No 8 August X * TU393 2 do /j ssn X * 2012BAJ03B Foundaton temsupported by the Natonal Key Technology Research and Development Program of the Mnstry of Scence and Technology of Chna Durng the 12th Fve-Year Plan 2012BAJ03B E-malkrsh@ scut edu cn E-malzhrjang@ scut edu cn

2 Lake Pont Tower m m Fg 2 2 Schematc dagram of temporary supports 1 Fg 1 Whole structure A - D 2b 8 3 4a b4 c mn

3 Fg 3 3 mm Layout of support pontsuntmm a- c Fg 5 5 Stran measurng ponts of the strengthened story trusses Fg 4 4 Unloadng of temporary supports a b 36

8 Kδ δ = F 5 28 Kδ -1 δ -1 = F -1 6 30 cm K K - 1 K 1 K 2 δ δ - 1 Δδ 1 1 Kδ δ F - 1 K = K

4 8 113 Fg 8 8 Montorng of dsplacement meter Fg 6 6 mm Stran measurng ponts of the suspended columnsunt mm Fg 7 7 Measurng ponts for vertcal deformaton Kδδ = F 8 Kδ δ = F 5 28 Kδ -1 δ -1 = F cm K K - 1 K 1 K 2 δ δ - 1 Δδ 1 1 Kδ δ F - 1 K = K -1 + K 1 - K 2 { δ 1 { F 1 δ = δ -1 + Δδ 1 + δ 2 + Δδ 2 + Δδ 3 F = F -1 + ΔF 2 + ΔF 4 + F

5 Δδ 2 Δδ 3 1 δ δ 2 20% 40% 75% 100% 6 δ 2 = { 0} F 13 h 9a- 9c F - 1 ΔF D ΔF 4 9d 7 D F 1 F Mdas Gen C30 C40 C45 C50 C55 C60 Q % 40% 75% 100% % 40% 75% 100% 2 80% 60% 25% N /mm C N /mm B 9 9 Fg 9 Comparson of partal stress measurement pont data

6 a- 9c D 9d 7 D D 6-7 D mm D a- 10d 6-7 A - D Fg 10 Comparson of partal vertcal deformaton measurement pont data

7 C2 D2 D2 C2 1 4 C2 23 D C Table 1 Change of reacton force of each support jont under unfavorable condton 14 kn A1 A2 B1 B2 C1 C2 1 D1 D /% C2 C2 A1 - D C2 Table 2 Change of vertcal deformaton of each measurng pont A1 A2 under unfavorable condton 14 mm 1 15% 0 86% B /% /% /% C B2 D1 D2 2 34%~ 5 19% C % C % % 1 C2 1-4 C2 C Table 3 Change of stresses of man structural members under 10% C2 unfavorable condton 14 MPa 50% % C2 6-7 C1 C2 C D2

8 Table 4 Change of reacton force of each support jont under unfavorable condton 23 kn A1 A2 B1 B2 C1 C2 D1 D /% D2 D2 A1 - D Table 5 Change of vertcal deformaton of each measurng pont under unfavorable condton 23 mm /% D2 1-4 /% /% D Table 6 Change of stresses of man structural members under unfavorable condton 23 MPa D2 D2 D 1-10 D2 J D FANG Zhao LIU Hong-bng LIU Yang Study on dynamc D performance of the rgd-flexble suspenson structure J Buldng Structure D2 2 J

9 TONG Gen-shu SU Jan Stablty of suspended structures J Engneerng Mechancs J J ZHANG WeZHANG J-wenTU Yong-mnget al Earthquake avodance mechansm and parameter optmzaton for sem-rgd suspended structures J Journal of Buldng Structures J GAO We-chengWANG Zhao-mn YU Yan-le et al WU Le GUO Zheng-xng TAO L-yun New technque of Structural behavors of U-shaped combnaton verendeel deformaton control of suspended structure upward con- floor of a long span mult-layer gymnasum durng unloa- structon J Constructon Technology XIE We-png REN Lu Smulaton calculaton over removng process of temporary supports for large-span cantlever steel structure J Cvl Engneerng and Urban Plannng ZHANG Lang-quanZHANG Shu-gangGUO Luanchuan et al Unloadng smulaton and stress montorng of steel roof of the Harbn Grand Theater J Earthquake Engneerng and Engneerng Dynamcs TIAN L-mn HAO J-png WANG Yuan et al Research on several key technologes for structural constructon of man stadum for the Unversdad Sports Centre J Journal of Buldng Structures / J GAO Yn FU Xue-y YANG Xang-bng Whole removal process smulaton of temporary support of Jnan Olympc Stadum J Spatal Structures J J CUI Xao-qangGUO Yan-lnYE Ke-mng Research on the constructon mechanc method of long-span steel CAO Png-zhou LI De FU Xn-zh et al Research on unloadng plan of temporary support n concert hall of Jangsu Grand Theater J Progress n Steel Buldng Structures LI Hu ZHOU Feng ZHU Yan-huang et al An analyss of montored and computed stran of the Natonal Aquatcs Center n the states of unloadng and daly use J Chna Cvl Engneerng Journal U - J dng formwork support system J Journal of Buldng Structures J DENG Zh-yong YE Xao-we NI Y-qng et al In constructon stress montorng and analyss of floatng J platform of the new headquarter of Shenzhen Stock Exchange J Journal of Buldng Structures PFEIFER D W MAGURA D RUSSELL H G et al Tme dependent deformatons n a 70 story structure J ACI Specal Publcaton GUO J XU L DAI L et al Applcaton of the real-tme J knematc global postonng system n brdge safety montorng J Journal of Brdge Engneerng WANG Pao-Hs YANG Tzu ZHENG Hou-Nong Analyss of cable-stayed brdges durng constructon by cantlever methods J Computers and Structures CHOI C K CHUNG H K LEE D G et al Smplfed buldng analyss wth sequental dead loads-cfm J Journal of Structural Engneerng ASCE structures J Engneerng Mechancs GB S 19GB S

10 8 119 Analyss and Montorng of Unloadng Process of Hgh-Rse Suspended Structure SHI Ka-rong 1 2 L Jun-feng 1 JIANG Zheng-rong 1 2 PAN Wen-zh 1 1 School of Cvl Engneerng and TransportatonSouth Chna Unversty of TechnologyGuangzhou GuangdongChna 2 State Key Laboratory of Subtropcal Buldng ScenceSouth Chna Unversty of TechnologyGuangzhou GuangdongChna AbstractDue to the fact that the hgh-rse suspended structure s of a long cantlever span and the constructon of the structure s very dffcultwhen the forward constructon method s adoptedthe temporary support should be set under the suspended structureand t can't be removed untl the suspended structure s ntegrated wth the man structure The unloadng process of the temporary support s very mportantbecause the structural bearng system s converted durng the process In order to verfy the relablty of the unloadng technology and ensure the structural safetyby takng a complex hgh-rse suspended structure of Zhuha Renheng Marne Center as the example the unloadng process s analyzed respectvely by means of the dsplacement control and the support reacton force controland the stress of the key members and the vertcal deformaton of the key nodes are montored durng the unloadng process The comparson between the unloadng analyss results and the montorng data shows that the results of the dsplacement control unloadng and the supportng reacton force unloadng are close to each other and that they accord well wth the montorng dataand thatafter the unloadnga whole structural bearng system forms and t tends to be stable On ths bassthe unloadng senstvty of the suspenson structure s nvestgated By analyzng the most unfavorable supportng reacton force and the supportng pont deformatont s concluded that the falure of one support pont n the unloadng process can cause the reacton forces of the adjacent support ponts as well as the vertcal deformaton and the member stresses of the upper truss to change greatly Thereforeeffectve measures should be taken to avod such unexpected problems n the unloadng process Key wordssuspended structuretemporary supportunloadng analyssmontorng 殧殧檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾殧 / OLED TFT OLED IEEE Transactons 檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾檾殧

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