131美女视频黄的免费千百音|狠狠色伊人久久精品综合网|欧美理论中文在线观看|国产精品亚洲无码

NewsHome > News > News Information

Requirements of Continuous Bridge Deck Paving on Curb Slipform Paver
release time:2020-5-30 10:17:16      hit count:1906

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
徐闻县| 丹阳市| 临夏县| 邯郸市| 饶平县| 资兴市| 宁城县| 镇赉县| 景宁| 南宫市| 阳朔县| 太原市| 瓦房店市| 庆安县| 高安市| 武汉市| 永修县| 抚顺市| 甘谷县| 顺义区| 阳朔县| 当雄县| 灵丘县| 申扎县| 铜鼓县| 弥勒县| 公主岭市| 赤城县| 含山县| 三原县| 安丘市| 孝昌县| 乐安县| 桐城市| 丰县| 张家界市| 怀远县| 亚东县| 任丘市| 龙山县| 龙陵县|