The construction period is 36 months
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The bridge pier is located in the gorge area, with overlapping mountains, crisscross streams, dense vegetation and fast water flow
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The project Department of Ganzhou Rongjiang new area broke the record of the longest continuous pipe jacking in Ganzhou City
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The center stake number of the right line of the bridge is K11 + 785, the total length of the bridge is 10 ((30 + 2 * 60) + 8 * (3 * 60) + 4 * 60) m, and the total span is 1830 M
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The length of pipe jacking is 599m, and the inner diameter of pipe is 1.6m
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It is the highest pier column of Shimu super large bridge
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The hollow thin-walled pier is a 10 ﹥ pier column of Shimu super large bridge on Qi Wu expressway, with a length of 5.5m, a width of 3.2m and a height of 64.554m
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Adhering to the concept of “green development + tourism culture”, the project department not only constructs the construction platform, but also improves the construction standard of “one bridge is one scene, one road is one view” and the concept of permanent and temporary combination The “terrace type” platform land was transformed into high-yield tea plantation land, which reduced the waste soil and benefited the local people
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The first hollow thin-walled pier of Qiwu expressway project was capped in the early morning of January 15, the project Department of bid A2 of Qiwu expressway of China Railway Bridge Bureau successfully poured the first hollow thin-walled pier
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The maximum height difference is 55 meters and the maximum longitudinal slope is 40 degrees
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The project is operated by mud water balanced composite rock pipe jacking machine
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The 0-6 pier is located in the deep valley zone
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The prefabrication of 488 span box girders of 5 bridges in the second bid section of the new Zhongwei Lanzhou railway passenger dedicated line was successfully completed
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It is located at the side of Zhangjiang River in Tandong town
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The pier section is 5.5m long and 2.2m wide
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One 4T and two 2T steam boilers are used to steam maintain the beam making pedestal and the beam storage pedestal (tension grouting area), so as to ensure the quality of box girder prefabrication Quantity
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In order to overcome the difficulty of on-site construction, the project department adopts the “terrace type” construction method, and adopts graded filling for the areas with large elevation difference and longitudinal slope, forming a “terrace type” construction platform
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Shuiquan bridge, Xindun bridge, Changtan 1 bridge and Changtan 2 bridge have completed girder erection
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In the face of complex, changeable and unknown underground construction environment, the project department overcame the problems of hard rock block, weak interlayer, clay paste drilling and so on in the construction project through preliminary technical tackling, reasonable allocation of resources, strengthening process control and timely summary and promotion
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The capping pier is a 3 # pier on the right side of Xinting super large bridge, which is a solid rectangular pier with d240 expansion joint
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Qiwu Expressway starts at the boundary between Jiangxi and Anhui, passes through tuochuan Township, Qinghua Town, Sikou Town, Ziyang town and Wuyuan Industrial Park in Wuyuan County, and ends at Wuyuan hub interchange, with a total length of 40.747 km
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It is reported that after the reconstruction of the whole line, the north extension of Huangshi Avenue has been upgraded to two-way six lane road, and the pavement has also been upgraded to asphalt
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The pier column is constructed by turnover formwork method
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The terrain is complex, with undulating ground and large longitudinal slope
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It is constructed according to the standard of two-way four lane, with a design speed of 100 km / h and asphalt concrete pavement
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Before construction, the special scheme for high pier construction is carefully prepared, experts are invited to review the scheme, and the site construction is carried out in strict accordance with the reviewed construction scheme
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Click “subscribe for more” to pay attention to the right section of Huangshi Avenue North Extension road of the Yangtze River comprehensive improvement project in Huangshi City
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The whole line is laid with DN 1000 ~ DN 1600 gravity flow sewage pipe, with a total length of 12.6km, including 8.5km of pipe jacking and 4.1km of open cut section
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In the process of pier construction, the quality control is strictly controlled
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In the face of complex geographical environment, all staff have always adhered to the concept of “unity, pragmatism, building quality Qi Wu”
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In the next step, the beam yard will overcome the difficulties of long transportation distance and approaching the Spring Festival, and complete the erection of the remaining 83 span box girders of the Yellow River Bridge, which is expected to be completed in early March
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At 15:30 on January 19, the prefabrication of box girders was successfully completed in Jingyuan beam fabrication yard of zlkz-zqsg2 bid section of the new Zhongwei Lanzhou Railway (Gansu Section) project of China Railway Bridge Bureau
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On the evening of January 16, the first pier of Xinting super large bridge on Qiwu expressway was capped
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Eight air heaters and 10 air guns are put into operation in time to heat the beam making pedestal and the aggregate silo
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According to the on-site construction personnel, the left road of the north extension section of Huangshi Avenue is under closed management, and the paving construction of the last layer of asphalt surface is about to be carried out, and the whole road is planned to be opened to traffic before the Spring Festival
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Huangshi City Yangtze River Section shoreline comprehensive improvement project (bid section I) is undertaken by China Railway Bridge Bureau Group Co., Ltd
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The project starts from Caoxi Road, connects with upstream Binjiang Road DN 1000 sewage pipe, and ends at Rongjiang No.1 road Rongjiang No.2 sewage pump station
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Since the winter construction, the average temperature of the beam site in Jingyuan County is – 3 ℃, and the extreme weather reaches – 21 ℃
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the main construction contents of the project include: Shanggang viaduct, the new main bridge is a two-way four lane bridge with a width of 17 meters and a main bridge length of 684.3 meters; the North extension project of Huangshi Avenue starts from Yingbin Avenue and ends at Ezhou boundary, with a section length of about 1.4 km; the proposed Ehuang road starts from Connecting with the existing road of Ehuang Road, extending along the inner side of the new Yanjiang Avenue, it is arranged in the open space of the embankment pressure platform, with a total length of 879.79m
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With the support and cooperation of all participating units, it only took about 2 months to cooperate with mud drag reduction and relay technology Time, successfully completed the pipe jacking construction of this section
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The Beam Yard undertakes the prefabrication and erection of 488 span box girders of Shuiquan bridge, Xindun bridge, Changtan No.1 Bridge, Changtan No.2 bridge and Huanghe Bridge, including 40 span 24m box girders and 448 span 32m box girders, with a total length of 22km
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The upgraded road can effectively relieve the existing traffic pressure, promote the interconnection of regional road network, and realize the rapid docking between Huangshi and Ezhou Shunfeng airport
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There are 15 sections on the left and right sides respectively, and the standard section length is 4.5m
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The construction of this project is of great practical significance to improve the layout of highway network in Wuyuan, Jiangxi Province, promote the integration and development of tourism resources along the line, speed up inter provincial industrial integration, and enhance the competitiveness of regional social economy
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At present, the pipe jacking length of the project is 3.32km, and the open cut section is 2.68km, which is expected to be completed in late 2021
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In order to ensure that the temperature difference between the concrete core and the beam surface does not exceed 15 ℃, after the beam pouring is completed to the initial setting, it is covered with double-layer quilts
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The bridge head of Xinting super large bridge is connected with Wangping tunnel in front of it
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On the morning of January 27, the right section of Huangshi Avenue North Extension road in Huangshi port area of Huangshi City was open to traffic, marking the right section of Huangshi Avenue North Extension road was open to traffic
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Organize on-site technicians and operation teams to carry out classified safety technical disclosure, and clarify the construction measurement, process, method, steps, quality control points and safety assurance measures of pier column, so as to lay a solid foundation for the smooth capping of pier column
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The height of the pier is 31.429 meters, and the pouring is completed in six times
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On the morning of January 26, in Jiesheng village, Tandong Town, Ganzhou City, the technicians of the project Department of Ganzhou Rongjiang new area of China Railway Bridge Bureau accurately connected the pipe jacking head with the outer diameter of 1.92m from the w52 working well to the W53 receiving well, and completed the “prescribed action” 16 days in advance, breaking the longest continuous pipe jacking in Ganzhou City It’s a good record
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Before the pouring of each pier, the safety and quality department, engineering department and material and Machinery Department of the project jointly inspect the verticality of the pier from time to time, which lays a solid foundation for the smooth capping of the pier.
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