The Design,Construction And Finite Element Simulation Of Reinforcement Concrete Continuous Box Beam

Because the concrete continuous box girder bridge's ability of crossing over is big, the method of construction is vivid, the adaptability is strong, structure just degree big, the anti-earthquake ability is strong and is open to traffic the going smoothly good and shape beauty etc. characteristics, have already got the extensive application in the international community currently. Continue its main beam of the beam bridge is the continuous accept on a few buttresseses, at the lotus carry the function, the different piece of the main beam face up have of have just curved moment, have of is negative moment, but bend the absolute value of the moment to all across simple-girder of the path bridge together more small. Thus, can save the main beam material dosage. Its upper part mainly has the plank, T -beam or box beam. Box section can adapt various usage condition,suiting for to prepare specially should the dint concrete consecution girder bridge, change the width bridge. Because the hang the arm plank is keyed into the box girder, its length can more significant variety, and the web be apart from and also can enlarge; Box beam contain bigger anti-twist just degree, therefore, box beam ability at only the pillar pays the pier up set up curved inclined bridge; Box beam allows to have the biggest and thin length; Should dint the value is lower, the center of gravity stalk does not be partial to the part, comparing the creep with T girder to become smaller .Box section cuts to face a single cellular, a cellular( or multi-cellular), Box beam bridge can be to become the height, can also be etc. height. See up from the beauty, have the bigger and main bore and the side bore of three across a box of beam bridge, use to become a beam is more beautiful; Across bridge (three across above) more to use to equal height a beam to have the better external appearance result. This text aims at the JING YI proper superhighway Jing men to Yi chang K36+418.431 concrete consecution a beam bridge, from the bridge upper part theories structure calculation, an emulation of the upper part structure the summary that analysis and the construction method carries on to the design construction of that bridge an integrity. Because continuous box beam is construct, the advantage of the construction and usage, the continuous beam bridge adopt to much in recent years and is used to make the prestressed concrete continuous box beam bridge. But that bridge adopted the common reinforced concrete continuous box beam according to the local circumstance,this text to common reinforced concrete continuous a beam carries on the detailed theories calculation, arranging according to the design data and cross section, carrying on horizontal distribute the coefficient calculation, compute inside the dint, the extreme limit loading dint calculation, just cut to face the anti-to pull and the inclined piece face the anti-to shear to load the dint calculation, reinforcing bar calculation and arrange and carry on to check to calculate, normal usage the stage crack calculation, the flexure degree calculation. Use the limited dollar of Ansys analyzes the software as to it's carry on the structure analysis, insuring the result analy's dependablility. The basic thought of a method is to solve continue of the district islong-lost for a limited and press certain way mutually unit link together. The unit can press different conjunction method to carry on the combination, and the unit can have the different shape again, so can turn several shapes to solve the area complicatedly with the model. A method be another important characteristics of the number analysis method is to make use of to look like the function supposedly in each unit to divide the slice to mean that all solves the area up treat to beg of did not know a function, unit inside of usually look like the function from did not know a function or and it leads the number the number order in the each knot of the unit puts to be worth the function with it to express. By so doing, in an analysis of a problem, did not know a function or it lead the number and become new and did not know the quantity in the number that the each knot order. (that is the freedom degree)Thus make a problem of infinite freedom of a consecution become a problem of long-lost limited freedom. Solve one as soon as these did not know the quantity, for the approximation can use to put to be worth the function to compute each unit inside a function, obviously along with the increment of the unit freedom degree and put the exaltation of be worth the function, solve of look like the degree and won't break the improvement. If the unit is to satisfy to refrain from rash action the request of, look like the solution and will be refrain from rash action in the precision to solve finally. This uses the ANSYS to the reinforced concrete continuously a beam carries on an emulation calculation, and with theories value carried on the contrast. The construction of this bridge adopt to build on the scene, infusingto build right on the spot, saving to prepare to make the place, reducing the luck to be apart from, can save a great deal of traffic expense. The construction characteristics: Did not sew the combination steel pipe support that the steel pipe welding become the conduct and actions prop up, accepting the heavy part from constitute with the horizontal I form steel lengthways, combine the steel pipe support to use the I form steel connect whole, template creation the aspect bottom mold is constructed the steel mold by the combination to combine, the side mold makes into the already set framework with the slot steel, angle steel...etc., saving the timber to increase at the same time again utilization, reduce the construction fee. Here according to construction characteristics with actual circumstance, carry on the choice to the support foundation, the foundation want to be firm . Weld the colligation to have accurate request to the reinforcing bar, be apart from even, the colligation pays the mold to want to fructify, firmness, take off the mold to want to draw to brush even, request to combine close, the template can't loosen to move while build, moving, gastight syrup, each item several the size is accurate without any error, the stalk line does not be partial to. While casting the concrete, the layering cast guaranteeing the new and old layer good to link up, in order to raise the concrete work, speed the concrete strength exaltation, can add to reduce the of water efficiently .The concrete sprinkles to build to complete, starting the health, usually keeping damp. This paper included:...