Method for laying cables in integrated bridge

Abstract

The present invention relates to a method for laying cables in a self-assembled bridge, including the following steps: step 1: applying pipeline integrated technology to hoist the bridge in sections; step 2: drilling holes at corresponding positions of the top plate and installing expansion bolts; step 3: connecting, segmenting, and straightening the bridge on the ground; step 4: installing cable protection wheels at the ends of both sides of the first section, laying cable sliding support devices in the bridge for the second section of the hoisting section, and installing cable horizontal laying restraint devices at the turning points; step 5: laying the cables, except for the formal fixing of the cables in the hoisting of the first section, temporary cable fixing devices are used in other sections; step 6: removing the cable protection wheels, sliding support devices, temporary restraint devices, and temporary fixing devices, and completing the shifting and installation work; step 7: finally completing the installation of the cable bridge at the vertical part of the terminal equipment. The present invention realizes the overall lifting of the cable bridge and the cables after they are laid on the ground, thereby reducing the labor cost of laying cables and the risk of high-altitude operations.

Description

Technical Field

[0001] The invention relates to a method for laying cables in a self-contained bridge frame. Background Art

[0002] Traditional cable tray and cable laying and installation construction: drilling holes or welding tray columns on the structural surface, installing hangers or brackets; installing the tray and horizontal crossbeams, and straightening them as a whole; handing over the construction of air ducts, water pipes and other related pipelines at the bottom of the tray to other professionals; laying cables in the tray, and sorting, binding and fixing the cables in the tray after laying.

[0003] In traditional construction methods, drilling holes on the structure surface, installing bridges, and laying cables are all high-altitude operations, and bridge installation and cable laying must leave relevant installation time for other professionals. The installed supports and hangers and bridges are very prone to damage, collision displacement, secondary pollution, etc. Cable laying is completed at high altitudes, and the operating space for operators in some areas is severely limited, the working environment is harsh, safety accidents are prone to occur, and construction quality is difficult to guarantee. Summary of the invention

[0004] The present invention aims to overcome the defects of the prior art and provide a method for laying cables in a self-contained bridge, so as to achieve overall lifting of the cable bridge and cables after they are laid on the ground, thereby reducing the labor cost of cable laying and the risk of high-altitude operations.

[0005] In order to solve the above-mentioned technical problems, the present invention is achieved as follows:

[0006] A method for laying cables in a self-contained bridge frame, characterized in that it comprises the following steps:

[0007] Step 1: Use pipeline integrated technology to plan the overall laying path of the cable tray, determine the direction of relevant cables, and hoist the tray in sections;

[0008] Step 2: Drill holes and install expansion bolts at corresponding positions on the top plate according to the installation position of the support and hanger brackets;

[0009] Step 3: Connect, segment, and straighten the bridge on the ground. Install the bracket according to the position determined by the comprehensive pipeline technology and fix it to the bridge. Except for the first section, which is installed vertically according to the pre-installed position, the adjacent sections connected to it are installed in a staggered manner according to the height difference. If there is still a height difference in other sections, the same procedure applies.

[0010] Step 4: Install cable protection wheels at both ends of the first section to avoid cable damage caused by hoisting. Lay a cable sliding support device every 20m in the bridge of the second section of hoisting, and install cable horizontal laying restraint devices at the turning points;

[0011] Step 5: Lay the cables according to the cable direction determined by the integrated pipeline technology. Except for the first section to be hoisted and formally fixed, other sections are equipped with temporary cable fixing devices. After laying, insulation monitoring is carried out before lifting.

[0012] Step 6: Before the first section is hoisted, temporarily fix the cables and structures of the last section. When the first section is hoisted, lift the bridge frame with the laid cables to the installation position as a whole, fix the bridge frame bracket, and then carry out the hoisting and installation of the second section. Then remove the cable protection roller, complete the connection between the second section and the first section, formally fix the cables in the second section, remove the cable protection roller, sliding support device, temporary restraint device and temporary fixing device, and complete the displacement installation work, and so on;

[0013] Step 7: Finally, complete the installation of the cable tray of the vertical part of the terminal equipment and fix the relevant cables. Temporary fixing devices can be used here to formally fix them.

[0014] The beneficial effects of the present invention are as follows: the layout of the bridge, the direction of the cables, the position of the brackets, etc. are planned in detail, the lifting and segmentation are carried out reasonably, the bridge installation, bracket fixing, cable laying and other works are completed on the ground, and finally the segmented overall lifting and high-altitude assembly are carried out, which greatly reduces the time and frequency of high-altitude operations, reduces the probability of safety accidents, and also ensures the construction quality;

[0015] The integrated construction method converts the cross-type and reciprocating operations of multiple time periods, multiple processes and multiple high-altitude operations into single-line operations within the electrical profession, which moves the construction management planning forward, reduces the difficulty of coordination between professions and improves construction efficiency.

[0016] A large number of ground installations and ground inspections greatly reduce the difficulty of construction, improve construction quality, and reduce the difficulty of finding and rectifying problems after they occur, thereby improving the level of risk management;

[0017] The research and development of cable protection wheels, sliding support devices, temporary restraint devices and temporary fixing devices have reduced the quality accidents that may occur during the lifting process and improved the quality of overall bridge installation and cable laying;

[0018] If this method is carried out together with the prefabricated installation of air ducts, water pipes, etc., it will greatly shorten the construction period, reduce professional coordination, and improve construction quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 It is a schematic diagram of the overall segmented lifting of the present invention;

[0021] Figure 2This is a schematic diagram of the installation of the cable protection support wheel;

[0022] Figure 3 is a schematic diagram of a cable sliding support device;

[0023] Figure 4 It is a schematic diagram of a restraint device for horizontal laying of a single cable;

[0024] Figure 5 It is a schematic diagram of multiple horizontal cable laying restraint devices;

[0025] Figure 6 This is a schematic diagram of the installation of a temporary cable fixing device. DETAILED DESCRIPTION

[0026] like Figure 1-6 As shown: A method for laying cables in a self-contained bridge frame includes the following steps:

[0027] Step 1: Use pipeline integrated technology to plan the overall laying path of the cable tray, determine the direction of relevant cables, and hoist the tray in sections;

[0028] Step 2: Drill holes and install expansion bolts at corresponding positions on the top plate according to the installation position of the support and hanger brackets, which is used for the expansion bolt installation device of the high and far plate wall;

[0029] Step 3: Connect, segment, and straighten the bridge on the ground. Install the bracket according to the position determined by the comprehensive pipeline technology and fix it to the bridge. Except for the first section, which is installed vertically according to the pre-installed position, the adjacent sections connected to it are installed in a staggered manner according to the height difference. If there is still a height difference in other sections, the same procedure applies.

[0030] Step 4: Install cable protection wheels 1 at both ends of the first section to avoid cable damage caused by hoisting, lay a set of cable sliding support devices 2 every 20m in the bridge of the second section of hoisting, and install cable horizontal laying restraint devices 3 at the turning points;

[0031] Step 5: Lay the cable according to the cable direction determined by the integrated pipeline technology. Except for the first section to be hoisted and formally fixed, other sections are all equipped with temporary cable fixing devices 4. After laying, conduct insulation monitoring before lifting;

[0032] Step 6: Before the first section is hoisted, temporarily fix the cables and structures of the last section. When the first section is hoisted, lift the bridge frame with the laid cables to the installation position as a whole, fix the bridge frame bracket, and then carry out the hoisting and installation of the second section. Then remove the cable protection roller, complete the connection between the second section and the first section, formally fix the cables in the second section, remove the cable protection roller, sliding support device, temporary restraint device and temporary fixing device, and complete the displacement installation work, and so on;

[0033] Step 7: Finally, complete the installation of the cable tray of the vertical part of the terminal equipment and fix the relevant cables. Temporary fixing devices can be used here to formally fix them.

Claims

1. A method for laying cables in a self-contained bridge frame, characterized in that It includes the following steps: Step 1: Use pipeline integrated technology to plan the overall laying path of the cable tray, determine the direction of relevant cables, and hoist the tray in sections; Step 2: Drill holes and install expansion bolts at corresponding positions on the top plate according to the installation position of the support and hanger brackets; Step 3: Connect, segment and straighten the bridge on the ground, install the bracket according to the position determined by the comprehensive pipeline technology, and fix it to the bridge. Except for the first section which is installed vertically according to the pre-installed position, the adjacent sections connected to it are installed in a staggered manner according to the height difference. If there is still a height difference in other sections, the same applies; Step 4: Install cable protection wheels at both ends of the first section to avoid cable damage caused by hoisting. Lay a cable sliding support device every 20m in the bridge of the second section of hoisting, and install a cable horizontal laying restraint device at the turning point; Step 5: Lay the cables according to the cable direction determined by the integrated pipeline technology. Except for the first section to be hoisted and formally fixed, other sections are equipped with temporary cable fixing devices. After laying, insulation monitoring is carried out before lifting. Step 6: Before the first section is hoisted, temporarily fix the cables and structures of the last section. When the first section is hoisted, lift the bridge frame with the laid cables to the installation position as a whole, fix the bridge frame bracket, and then carry out the hoisting and installation of the second section, and then remove the cable protection roller, complete the connection between the second section and the first section, formally fix the cables in the second section, remove the cable protection roller, sliding support device, temporary restraint device and temporary fixing device, and complete the displacement installation work, and so on; Step 7: Finally, complete the installation of the cable tray of the vertical part of the terminal equipment and fix the relevant cables. A temporary fixing device is used here to formally fix them.

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