公路工程
公路工程
공로공정
JOURNAL OF HIGHWAY ENGINEERING
2013年
6期
206-212
,共7页
吴伟国%蒋鑫%杜召华%黄浩%胡尚
吳偉國%蔣鑫%杜召華%黃浩%鬍尚
오위국%장흠%두소화%황호%호상
满堂碗扣式支架%施工%安全控制%预压试验%测量%混凝土浇注
滿堂碗釦式支架%施工%安全控製%預壓試驗%測量%混凝土澆註
만당완구식지가%시공%안전공제%예압시험%측량%혼응토요주
holder%construction%security controlling%preloading experiment%measuring%con-crete casting
满堂碗扣式支架具有整体拼装速度快、操作简单、整体性好、变形小等特点,在施工安全控制中,其承载能力与稳定性特别重要。通过在一座高速公路桥梁的施工监控中,根据现场受力情况建立力学计算模型,确定边界条件,使用桥梁有限元专业计算软件 MIDAS 与结构力学求解器计算对支架方案可行性进行了验算,然后在施工前进行了预压试验用以消除非弹性变形,在试验过程中采用新的测量方法进行了支架结构的变形量测,经过实测值与计算值对比确定了支架方案的可操作性。再在施工过程中再次进行监测,最终实现梁体混凝土的安全浇注。
滿堂碗釦式支架具有整體拼裝速度快、操作簡單、整體性好、變形小等特點,在施工安全控製中,其承載能力與穩定性特彆重要。通過在一座高速公路橋樑的施工鑑控中,根據現場受力情況建立力學計算模型,確定邊界條件,使用橋樑有限元專業計算軟件 MIDAS 與結構力學求解器計算對支架方案可行性進行瞭驗算,然後在施工前進行瞭預壓試驗用以消除非彈性變形,在試驗過程中採用新的測量方法進行瞭支架結構的變形量測,經過實測值與計算值對比確定瞭支架方案的可操作性。再在施工過程中再次進行鑑測,最終實現樑體混凝土的安全澆註。
만당완구식지가구유정체병장속도쾌、조작간단、정체성호、변형소등특점,재시공안전공제중,기승재능력여은정성특별중요。통과재일좌고속공로교량적시공감공중,근거현장수력정황건립역학계산모형,학정변계조건,사용교량유한원전업계산연건 MIDAS 여결구역학구해기계산대지가방안가행성진행료험산,연후재시공전진행료예압시험용이소제비탄성변형,재시험과정중채용신적측량방법진행료지가결구적변형량측,경과실측치여계산치대비학정료지가방안적가조작성。재재시공과정중재차진행감측,최종실현량체혼응토적안전요주。
The construction method of Full Framing Cuplok Holder has been wide used in the con-struction of continuous bridges for it has the merits of fast assembling,simply using,good integer,and small deformation.It is very important that ensuring lording capacity and stabilization of holder when u-sing.Mechanical model and boundary condition of holder of a constructing bridge was established.As well it was solved by using professional calculating soft MIDAS and Structural Mechanics Solver.Then preloading experiment was done before construction,meanwhile a new measuring method was used.From the comparison between the theoretical calculating result and measuring result,usability of construction scheme was admitted.During the construction period,measuring was executed again.At last,concrete was casted safely.