brief introduction
Taishan Bridge is the first large stone arch bridge built on Naihe River after liberation. The bridge is a three-hole hollow stone arch bridge without jiaozi, with a total length of 82m and a width of12m. In 2006, the north side of the original bridge was widened to 25 meters, including 20 meters of carriageway and 2.5 meters of sidewalks on both sides. The widened Taishan Bridge maintains its original shape, and its three-hole arch and shoulder arch with different heights are in proper proportion, with beautiful curves and quite Zhao Zhouqiao style. The four characters "Taishan Bridge" carved in stone above the arch of the bridge were inscribed by Mr. Guo Moruo. Standing on the bridge and looking north, it is the main peak of Mount Tai, and there is a glazed tile hexagonal pavilion at the western end of the bridge, which seems to be guarding the bridgehead of the bridge; Under the bridge is a bright green artificial lake, with weeping willows and promenades on the shore, a sculpture of a swan taking off in the middle of the lake, and undulating buildings on both sides of the street around the bridge. Looking south, I saw the famous Overseas Chinese Hotel in Tai 'an, which formed a beautiful skyline with the Electric Power Building and ICBC Building. Therefore, Taishan Bridge is a landmark building integrating traffic and landscape.
Because the original bridge deck is too narrow to meet the traffic requirements, it must be widened and reconstructed; However, normal traffic cannot be interrupted during the project construction, and the main arch ticket construction should be completed before the rainy season to avoid being affected by floods. This requires that the design scheme must be scientific, rigorous and convenient for construction.
Architectural design structure
Taishan Bridge was originally a 3× 20m hollow hinged stone arch bridge, with a total length of 82m and a width of 12m, in which the carriageway is 7m wide and the sidewalks on both sides are 2.5m wide. The design loads are steam-13 and tow -60, and the crowd load is 0.4 tons/m2; Take the once-in-a-century flood flow as the design flow (188m3). The main arch coupon is a catenary arch with variable cross-section, with an arch height of 5m, an arch foot thickness of 130cm and a vault thickness of 80cm. Near the arch foot, there is a double-hole abdominal arch on both sides. The abdominal arch is a semicircular arch with equal cross section, with an inner diameter of 100 cm and a thickness of 40 cm. The arch coupons are all built with coarse stone, the arch is filled with flaky concrete, and the side walls are inlaid with stone; Piers and abutments are made of mortar and inlaid with stone. After widening, the bridge deck is 25 meters wide, and the bridge type and facade appearance remain unchanged. The principles of choosing design scheme are: applicability (meeting the requirements of urban trunk roads for bearing capacity), aesthetics (meeting the requirements of tourist landscape), economy (less investment) and convenience for construction (convenient and fast construction). The original bridge was designed according to the load standard at that time, and it was safe. According to the current highway load standards, that is, Qichao 20 and Hangzhou 120, the widening design is checked.
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