CN-117966541-B - Umbrella-shaped supporting platform and method with metal framework as main body

CN117966541BCN 117966541 BCN117966541 BCN 117966541BCN-117966541-B

Abstract

The invention discloses an umbrella-shaped supporting platform taking a metal framework as a main body and a method thereof, belonging to the technical field of airport pavement rush repair. The umbrella-shaped supporting platform is a supporting structure of a metal framework main body, the base is arranged at the bottom of a pit and used for supporting the umbrella-shaped supporting platform at the upper part, the umbrella-shaped supporting platform and the base are sleeved on the main column, the umbrella-shaped supporting platform is used as main filling material of the pit space, the rest gaps are mainly filled and leveled by sand stones as gap filling material, and finally cement sheet quick-drying concrete is arranged above the cement sheet quick-drying concrete and the undamaged pavement to keep level. The invention has the advantages of small carrier, quick construction, low difficulty, lap joint, single operation and the like, can quickly repair pits without specific shapes, reduces the operation difficulty, reduces the material requirement, and can realize the quick repair task of important construction such as the pavement and the like under emergency conditions.

Inventors

DAI XIAOQING
ZHANG ZHONGWEI
SUN MINQIAN
DUAN LIQUN
TAN YIZHONG
XIONG ZIMING
LIN YUAN
DONG LU

Assignees

中国人民解放军陆军工程大学

Dates

Publication Date: 20260512
Application Date: 20240201

Claims (5)

1. The umbrella-shaped supporting platform is characterized by comprising an umbrella-shaped supporting platform and a base, wherein the umbrella-shaped supporting platform is a supporting structure of a metal framework main body, and the base is arranged at the bottom of a pit and is used for supporting the umbrella-shaped supporting platform at the upper part; the variable cross section of the main column is provided with a screw hole, a round steel pipe with a through hole is sleeved outside the variable cross section of the main column, and an anti-rotation bolt penetrates through the through hole and is locked in the screw hole of the variable cross section of the main column, so that rotation of the variable cross section of the main column due to lap joint looseness is prevented; the round steel tube is used for improving rigidity at the variable cross section; the main column comprises a base main column and an umbrella body main column, wherein the bottom of the base main column is connected with the base, the upper end of the base main column is fixed with the lower end of the umbrella body main column through a connecting mechanism, and the upper end of the umbrella body main column is also provided with a connecting mechanism; the metal framework comprises a plurality of inclined support rods and horizontal support rods, wherein the lower ends of the plurality of inclined support rods are connected with a lower connecting mechanism, and the ends of the plurality of horizontal support rods are connected with an upper connecting mechanism; the connecting mechanism comprises a sleeve, a disc supporting plate, rib plates and flange bolts, wherein the disc supporting plate is arranged on the outer side of the sleeve, the lower surface of the disc supporting plate is connected to the outer side face of the sleeve through the rib plates, the flange bolts are arranged on the outer side face of the sleeve above the disc supporting plate, a plurality of connecting plates are welded on the outer side of the flange bolts, the lower ends of the inclined supporting rods are connected to the connecting plates of the lower connecting mechanism, the ends of the horizontal supporting rods are connected to the connecting plates of the upper connecting mechanism, when the umbrella-shaped supporting platform is unfolded, the flange bolts of the lower connecting mechanism move upwards, so that the inclined supporting rods push the sliding devices to slide outwards, the horizontal supporting rods are unfolded and form a plane at the top, the outer ends of adjacent horizontal supporting rods are connected through the horizontal connecting rods, so that lap joint of one layer of supporting platform is realized, and when the umbrella-shaped supporting platform is folded, the flange bolts of the lower connecting mechanism move downwards, so that the inclined supporting rods pull the sliding devices to slide inwards, and the horizontal supporting rods are folded.
2. The umbrella-shaped supporting platform taking the metal framework as a main body is characterized in that the base comprises a steel plate, a steel round sleeve and rib plates, the steel plate is arranged at the bottom of a pit, the steel round sleeve is arranged on the upper surface of the steel plate, the rib plates are connected between the side wall of the steel round sleeve and the steel plate, the lower end of a main column is arranged inside the steel round sleeve, and the umbrella-shaped supporting platform is sleeved on the main column.
3. The umbrella-shaped supporting platform taking the metal framework as a main body is characterized in that the upper ends of the main columns exposed out of the lower umbrella-shaped supporting platform and the lower ends of the main columns of the upper umbrella-shaped supporting platform are connected through a connecting mechanism, so that the overlapping of the multiple layers of umbrella-shaped supporting platforms is realized, and the lower umbrella-shaped supporting platform is connected with the end parts of the horizontal supporting rods of the upper umbrella-shaped supporting platform through vertical connecting rods.
4. The umbrella-shaped supporting platform taking a metal framework as a main body according to claim 1, wherein the ejector pins are welded below the horizontal supporting rods, and when the umbrella-shaped supporting platform is unfolded, the sliding device is limited by the ejector pins, so that the top formed by unfolding each horizontal supporting rod is a plane.
5. A method of supporting an umbrella support platform based on a metal skeleton according to any one of claims 1 to 4, comprising the steps of: Step 1, firstly splicing a base and a main column, sleeving a round steel pipe at a variable cross section, aligning the main column with holes on the round steel pipe, and screwing an anti-rotation bolt; step 2, sleeving the welded disc support plate, rib plates, flange bolts and connecting plates on a main column integrally, wherein a layer of support platform comprises an upper connecting mechanism and a lower connecting mechanism; Step 3, performing incision treatment on flanges at two ends of the diagonal support rod to avoid the rotation resistance of the end part caused by manufacturing defects, welding thin steel plates on webs at two ends of the diagonal support rod to improve the rigidity of the end part, and then connecting one end of the diagonal support rod with a connecting plate on a flange bolt of a lower connecting mechanism through a bolt; Step 4, carrying out incision treatment on a flange at one end of the horizontal support rod so as to avoid the rotation blocking of the end part caused by manufacturing defects, and simultaneously welding a thin steel plate on a web plate at the inner end of the horizontal support rod so as to improve the rigidity of the end part; step 5, connecting one end of the inclined support rod, which is not connected, with a sliding device on the horizontal support rod, and then overlapping the horizontal connection rods between the horizontal support rods, so as to finish overlapping of a layer of support platform; Step 6, continuously and upwards lapping the N layers of support platforms according to the size and depth of an actual pit, repeating the steps 2 to 5, and connecting the two ends of the vertical connecting rod with the outer ends of the upper layer of horizontal support rods and the lower layer of horizontal support rods with the same vertical surface to play a role in force transmission, so that the whole structure is more stable and the bearing capacity is stronger; Step 7, after the umbrella-shaped supporting platform is lapped, placing the umbrella-shaped supporting platform into a pit on a pavement, wherein the main filler in the pit space is the umbrella-shaped supporting platform, filling and leveling the rest gaps by using sand stone as a gap filler, and finally placing a cement sheet above the cement sheet, and keeping the poured quick-drying concrete level with the undamaged pavement; And 8, after the quick-drying concrete is solidified and reaches the expected strength, completing quick rush repair of the tunnel face.

Description

Umbrella-shaped supporting platform and method with metal framework as main body Technical Field The invention belongs to the technical field of airport pavement rush repair, and particularly relates to an umbrella-shaped supporting platform taking a metal framework as a main body and a method. Background With the rapid development of the economy in China, the demand for air transportation is increased, the total number of take-off and landing of airplanes is increased, the number of newly constructed civil airports is continuously increased, and the civil airports become important engines for regional economy development. However, in the case of sudden pavement damage, rapid repair work is required for the airport runway pavement. In recent years, the repairing technology of the pavement adopts reinforced concrete precast slabs, aluminum alloy pavement slabs, roller compacted concrete, filling broken sand and stone poured mortar and the like, and for example, the patent of the invention with the application number of CN202210094338.2 discloses an assembling type airport pavement system setting method for maintaining the local damaged area of an airport pavement, and adopts the assembling type airport precast slabs for installation, but the installation process adopts cast-in-place concrete to finish the height adjustment of a base layer, so that the material consumption is high, the timeliness is poor, and the aim of quick rush repair of the pavement is difficult to achieve. At present, the repair technology of the pavement damage of the civil airport in China basically takes the repair mode of cast-in-situ high-performance concrete on the pavement as the main mode, and the repair technology has the defects of poor construction timeliness, low work efficiency, large raw material demand, high cost and the like, and the concrete needs to wait for reaching the strength requirement. Under such circumstances, a construction device and a repair technique capable of realizing rapid repair of the road surface and improving the repair efficiency are needed to overcome the defects of the conventional repair method. Therefore, in order to solve the problems of the existing rapid repair of the damaged pavement, it is necessary to provide an umbrella-shaped supporting platform with a metal framework as a main body as a rapid repair device for the pavement to solve the problems. Disclosure of Invention The invention aims to solve the problems in the background technology and provides an umbrella-shaped supporting platform device taking a metal framework as a main body and a method thereof, which are used for realizing quick rush repair of an airport broken pavement and improving efficiency. The invention discloses an umbrella-shaped supporting platform taking a metal framework as a main body, which comprises an umbrella-shaped supporting platform and a base, wherein the umbrella-shaped supporting platform is of a support structure of the metal framework main body, the base is arranged at the bottom of a pit and is used for supporting the umbrella-shaped supporting platform at the upper part, and the umbrella-shaped supporting platform and the base are sleeved on a main column. Further, the base comprises a steel plate, a steel round sleeve and rib plates, wherein the steel plate is arranged at the bottom of a pit, the steel round sleeve is arranged on the upper surface of the steel plate, the rib plates are connected between the side wall of the steel round sleeve and the steel plate, the lower end of the main column is arranged inside the steel round sleeve, and the umbrella-shaped supporting platform is sleeved on the main column. Further, screw holes are formed in the variable cross section of the main column, round steel pipes with through holes are sleeved outside the variable cross section of the main column, anti-rotation bolts penetrate through the through holes and are locked in the screw holes in the variable cross section of the main column and used for preventing rotation of the variable cross section of the main column due to lap joint looseness, and the round steel pipes are used for improving rigidity of the variable cross section. Further, the main column comprises a base main column and an umbrella body main column; the bottom of the base main column is connected with the base, the upper end of the base main column is fixed with the lower end of the umbrella body main column through a connecting mechanism, the upper end of the umbrella body main column is also provided with a connecting mechanism, the lower connecting mechanism is used for fixing the upper end of the base main column and the lower end of the umbrella body main column and connecting a metal framework of an umbrella-shaped supporting platform, and the upper connecting mechanism is used for connecting the metal framework of the umbrella-shaped supporting platform. The metal framework comprises a plurality of inclined support rods and horiz