成人黄页网站视频_亚洲裸男gv网站_欧美第一网站_久久国产劲暴∨内射新川_亚洲精品在线视频观看_免费精品国偷自产在线2020

NewsHome > News > News Information

Requirements of Continuous Bridge Deck Paving on Curb Slipform Paver
release time:2020-5-30 10:17:16      hit count:1985

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: 精品视频免费观看 | 日本免费一区二区三区在线播放 | 手机超碰在线 | 四虎激情网 | 国产午夜精品在线 | a级黄毛片 | 天天看天天干天天操 | 国产人澡人澡澡澡人视频 | 男人的天堂AV网址 | 精品999在线观看 | 99热精品视 | 日本三级毛片 | 国产精品va无码欧美二区 | 国产一区二区三区四区五区精品 | 人妻18毛片A级毛片免费看 | 国产精品9999久久久久 | 国产女主播精品大秀系列 | 欧美三级午夜理伦三级 | 靠逼网站在线观看 | 亚洲精品无码永久中文字幕 | 成年A级毛片免费观看 | 精品国产尤物在线观看 | 无码国产福利av私拍 | 欧美成人一区在线 | 成人综合视频在线 | 午夜在线 | 天天爽一爽 | 日本91精品 | 粉嫩高潮美女一区二区三区 | 国内精品伊人 | 久久久久国产精品人妻AⅤ网址一 | 777米奇影视第四色 国内精选免费大片在线观看 | 成人A级视频在线观看 | 女友莹莹的秘密调教69 | 无码精品AV久久久奶水小说 | 永久免费AV无码网站喷水 | 无码国产成人午夜视频在线播放 | 深夜免费福利视频 | 男人久久 | 成人偷拍片视频在线观看 | 69pao强力打造国产成人 |