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The bridge design of SuZhou He Ping qiao project（Continuous Bridge）
【Design General Information】Bridge is an architectural form to overcome obstacles and other vehicles andpeople had built. In recent years, China's road and bridge traffic has been greatprogress and development, more bridges and tunnels have sprung up, more and morerivers and valleys need to build bridges to cross. There are more and more developedurban transport system complex, viaduct show its mettle in the complex urbantransport systems. Hangzhou Bay Bridge built modern Bridge, connecting theadjacent land, providing transport to facilitate, promote economic development.Yunnan span 63m south transit road viaduct, built in 1997 is the country's biggestsimply supported beam bridge. Great span continuous prestressed concrete beambridge rapid development in the mid-1980s, under normal circumstances cantileverconstruction, are widely used. Liuku Yunnan Nujiang River Bridge is a typicalexample, it was built in 1991, three-span continuous beam bridge, left and right sidespan 85m, main span of 154m. The same example there is a second Nanjing YangtzeRiver Bridge north of the Han Bridge, the main span of 165m, the left and right sideof the span of 90m, completed in July 2001. Continuous beam bridge constructionmethods commonly used are as follows: First Method pushing construction method;second method is overall stent pouring method; Method three mobile mold by pouringhole method; Method four is simple supported - continuous method; Method five iscantilever method ; one of the most common construction method. Improve the socialand cultural level of knowledge of the progress of science and technology level, manytypes of beautiful shape, modern bridge with multiple functions, and long-spanbridges across the rivers and lakes of the large bridge as like bamboo shoots after therain gradually completed. Construction of bridges and the size and number of tunnelsand bridges the technological level of our country, we are already the world'sadvanced level, ranking higher. China has completed the construction of roads and bridges have completed morethan 550,000 seats, which beam bridge accounted for more than 95%. From this wecan see that our Chinese road traffic bridge structure is commonly used in the form ofbeam bridge. Beam bridges many categories, according to different categories can bepided into many kinds, such as according to the structure, Beam Bridge girderbridge, simply supported beam bridge, T-type rigid frame bridge, cantilever bridges;cross-sectional form, girder bridge with tanks girder bridge, T-shaped girder bridge,truss girder bridges.Because of socio-economic level has been strong, the experience has beenaccumulated in the bridge construction, bridge construction of various types oftechnology have unprecedented progress. Bridge construction technical capacity ofthe first countries to show the strength level of industrial development andsocio-economic development of this country, so that the progress and development ofconstruction technology of the country's overall level of economic development andbridge engineering has a very close relationship. After the founding of new China in1949, construction of bridge engineering technology in decades has been very rapiddevelopment, China's bridge design level continues to improve, more scientific rigor,all kinds of industrial materials manufacturing technology continues to improve, withthese excellent materials, excellent construction technology and technology standards,was able to bridge engineering design drawings transformed into practical projects.Similarly, the rapid maturation and development of construction technologyengineering, bridge engineering design level even with the increase, letting bridgeengineering structure design even more beautiful.The main design elements of the design is in Suzhou City peace bridge design(continuous beam bridge). The design consists of three bridge program, which oneprestressed concrete continuous beam bridge; Option II is simply supported beambridge; program three T-shaped rigid frame bridge, considering the inpidual that oneis the best option program, should be use. The bridge uses three main hole span of60m - span Continuous Beam Bridge for box-section beam, side span and mid-span of span ratio (0.5 to 0.7): 1, combined with the requirements of the cantileverconstruction, whichever side span span 40m. The design of the bridge is the same typeof program and two independent bridge span structures, which are single-box singlebridge dual chamber box-section beams. For deformation curve height girder bridge,access high fulcrum beam H = 3.5m, cross beams Cross access to h = 2.3m high beambottom curve: from the complex and aesthetic aspects of section force point of view,the choice of secondary beam bottom parabolic curve. For the bridge deck, the designof the bridge-access as 80mm concrete deck pavement, the choice of 50mm asphaltconcrete as wear layer, a total of 130mm thick bridge deck. Main Bridge PierFoundation uses 12 φ = 1500 bored piles; Caps thickness fetch 2.5m; in order toreduce the flow of the Bridge Foundation of impact, the two Caps transverse to theouter edges of the shape of an arc-shaped design The main bridge piers of doubleShaft Piers.Full bridge symmetrically pided into 140 units, the use of its computer programto calculate the constant live load and internal force of each construction stage andchecking each load combination stress.A construction method using off the shelf.【Key words】 continuous beam bridge; cantilever construction; prestressed.