深夜精品福利_成人在线免费视频播放_亚洲成人视屏_精品国产欧美另类一区_亚洲国产精品成人久久蜜臀_国产精品亚

NewsHome > News > News Information

Requirements of Continuous Bridge Deck Paving on Curb Slipform Paver
release time:2020-5-30 10:17:16      hit count:1865

In order to realize continuous pavement of bridge deck by curb slipform paver, it is one of the necessary conditions to ensure the construction machinery and equipment that can pave the bridge deck.  First of all, the lateral formwork on the kerbstone slip-form paver can meet the requirements of the thickness of the thin reinforced concrete surface layer on the bridge deck, and the continuous steel bars, hanging ring steel bars, steel mesh, expansion joints and expansion joints on the bridge are proofread, which may block the slip of the lateral formwork of the kerbstone slip-form paver.  In particular, the blocking and advantage of the transverse complete continuous steel mesh on the bridge deck is that the movable height of the side formwork is only 5cm. Therefore, the side formwork must be a movable lifting type side formwork, which can be lifted to a zero position flush with the extrusion plate.  If there is a lengthened side formwork hanging behind the machine, it must also meet the thickness requirements of the paved bridge deck.

壓縮600.jpg

The bridge deck pavement of some expressways in our country has been damaged in a very short period of time. One of the most important reasons is that the thickness difference between the longitudinal and transverse pavement layers is too large. The longitudinal pre-stressed reverse arch is too large, some of which are more than 5cm and not less than 3-4 cm after pavement.  Transverse in precast reinforced concrete beam, not in the flange plate precast transverse slope, in the beam transverse flange plate between the wet joint, there is a transverse 2-4cm steps, in this case, the beam itself is not balanced in the vertical and horizontal direction, loss of pavement thickness of 2-4cm.  From the perspective of construction control, the minimum pavement thickness is 20cm, which is of great value to ensure the quality of actual bridge deck pavement.


During the construction process, the walking position of the planned kerbstone slipform paver for bridge deck pavement should be reserved, especially for central isolated expressways and grade I highway bridges.  First of all, the crawler of the two-lane large kerb slipform paver cannot travel in the central isolation and emptying position, nor at the outer edge of the main girder flange plate.  Secondly, the bridge engineering should divide the bridge deck paving work into kerbstone slipform pavers for road surface construction. At the same time, the guardrails on the bridge must be made after the kerbstone slipform pavers pave the bridge deck. Otherwise, the bridge railings will block the tracks of the kerbstone slipform pavers and have no paving position.


Previous: No more
Next: No more

Back to list

News you are interested in
主站蜘蛛池模板: 国产三线在线 | 一级大片免费 | 中文字幕人妻少妇引诱隔壁 | 99久久精品免费精品国产 | 精品无码av一区二区三区 | 乱肉合集乱高h交换 | 南海灵通今日铝价格最新行情 | 99久久婷婷国产综精品喷水 | 国产探花在线精品一区二区 | 99精品久久久久久久 | 免费a观看 | 久久泄欲网久久精品性色 | 国产一精品一AV一免费爽爽 | 97免费人做人爱在线看视频 | 九色腾高清 | 女人内精69xxxxx免费软件 | 久久探花| 中国三级黄色大片 | 麻豆91精品| 国产亚洲日韩AV在线播放不卡 | 国产视频一区在线免费观看 | av自拍网站观看 | 欧美一级黄色录像片 | 一本色道无码道在线观看 | 久久久久九九九九九 | 久久久久久爱 | 女国产精品视频一区二区三区 | 亚洲综合欧美色图 | 亚洲理论在线观看 | 欧美大片首页欧美大片首页 | 在线视频免费观看爽爽爽 | aaa大片| 国产精品亚洲欧美卡通动漫 | 甜性涩爱qvod | 色吊丝最新永久免费观看网址 | www.国产一区二区三区 | 日本做a视频 | 日本十八禁视频无遮挡 | 免费在线观看毛片视频 | 日韩高清成人 | 欧美jizzhd精品欧美喷水 |