A quick repair construction method using nodular cast iron plug-in cross groove grate

Abstract

The application discloses a kind of quick repair construction methods of nodular cast iron plug-in cross trench grate, comprising the following steps: S1, processing the length of water ditch suitable channel steel;S2, setting 4-6 elevation control piles and corresponding two by two;S3, elevation is measured and marked;S4, the channel steel groove is firmly fixed on concrete;S5, install nodular cast iron plug-in cross trench grate;S6, the reinforcement and side form installation of cross trench grate two sides are tied;S7, pouring concrete;S8, complete repair;The method reduces construction difficulty, reduces maintenance cost, can effectively improve the flatness, firmness of cross trench grate, improve the speed of construction, effectively reduce the damage rate in the process of operation and maintenance, more effectively reduce the difficulty of replacement after damage.

Description

Technical Field

[0001] This invention relates to the field of engineering construction technology, specifically to a rapid repair construction method using ductile iron insert-type cross-sectional trench grates. Background Technology

[0002] Cross-cutting ditches are widely used in municipal tunnel entrances and exits, building basement entrances and exits, urban roads and other engineering water intake and drainage facilities. During daily driving, it is common to encounter the phenomenon of loose, noisy or damaged cross-cutting grates when passing through cross-cutting ditches. After actual investigation and analysis, most of them are caused by the poor reinforcement of the insert-type cross-cutting grates, the inconsistent height, and the difficulty in repairing them after they become loose and damaged. Summary of the Invention

[0003] The technical problem this invention aims to solve is to overcome existing defects and provide a rapid repair method for ductile iron insert-type transverse trench grates. This method securely and quickly installs, levels, and reinforces the transverse trench grates; reduces high maintenance costs caused by loosening or damage to the transverse trench grates during operation and maintenance; and allows for the replacement of transverse trench grates without damaging the concrete on both sides of the ditch during maintenance, thus reducing the high maintenance costs and difficulties in repair caused by damage during operation and maintenance.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a rapid repair construction method using ductile iron insert-type cross-sectional trench grates, comprising the following materials: ductile iron insert-type cross-sectional trench grates, a spirit level, a spirit level, nylon thread, an electric welding machine, cast iron welding rods, channel steel, and geotextile, and comprising the following steps:

[0005] S1. First, process 1 to 3 channel steels suitable for the length of the ditch according to the length of the ditch.

[0006] S2. Set 4-6 elevation control stakes on both sides of the ditch along the direction of the ditch, and set up a set of two stakes on each side every 3 meters.

[0007] S3. According to the elevation requirements of the design drawings and the slope of the top surface of the ditch, use a level to measure the elevation on the elevation stake and mark it. Use a nylon rope to pull the line according to the mark.

[0008] S4. Using the reference edge position, descend 19.5cm as the height of the top surface inside the channel steel, and use expansion bolts to firmly fix the channel steel upwards onto the concrete.

[0009] S5. Install the ductile iron insert-type cross-section grate. Use a spirit level to perform secondary leveling with reference to the elevation control line. If there are gaps between the cross-section grate legs and the channel steel, fill and raise them to ensure stability. Then weld them firmly to the channel steel with cast iron welding rods.

[0010] S6. Tie the reinforcing bars on both sides of the cross-section trench grate and install the side formwork.

[0011] S7, use plastic film to cover the cross-section of the grate top firmly, and use geotextile to block the cross-section of the grate leg gap to prevent leakage and pollution of the cross-section of the grate during concrete pouring.

[0012] S8, pouring concrete.

[0013] S9, in the process of operation and maintenance, remove the damaged cross-section of the grate, put it into a new water grate and weld it firmly with the channel steel to complete the repair.

[0014] Preferably, in step S1, the channel steel is 63# galvanized channel steel, the waist width is 63mm, the leg height is 40mm, the channel steel is upward during use, and the length of the channel steel is 4 meters.

[0015] Preferably, in step S3, the nylon rope is a micro-elastic nylon rope, white, easy to tighten the reinforcement, and the color contrast with the ductile iron grate is easy to observe.

[0016] Preferably, in step S4, the channel steel is installed firmly with the concrete surface by expanding bolts according to the height adjustment of the control line, and the center of the channel steel is aligned with the cross-section of the grate leg.

[0017] Preferably, in step S5, the length of the plug-in cross-section of the grate is 500mm, the outer width is 780mm, the inner width is 600mm, and the height is 195mm.

[0018] Preferably, in step S5, the welding rod is made of cast iron containing iron, which can firmly weld the ductile iron cross-section of the grate with the channel steel.

[0019] Preferably, in step S5, the middle position adopts a ductile iron plug-in cross-section of the grate 500*600*195 integrated type, and the two sides adopt a ductile iron plug-in cross-section of the grate 500*600*195 openable type.

[0020] Preferably, in step S5, the length of the level ruler is 3 meters.

[0021] Preferably, in step S5, the ductile iron plug-in cross-section of the grate is welded firmly with the channel steel according to the elevation top surface control line and the level ruler, and the two side cross-sections of the grate are installed first, and then the middle cross-section of the grate is installed.

[0022] Preferably, in step S5, the gap between the adjacent cross-sections of the grate legs needs to be blocked with geotextile.

[0023] Preferably, in step S6, the lower layer of reinforcement should be welded and connected with the channel steel during the reinforcement binding process of the cross-section of the grate.

[0024] Preferably, in step S7, before pouring concrete, use plastic film to cover the cross-section of the grate installed to prevent concrete pollution.

[0025] Technical effects and advantages of the present application:

[0026] Compared with the prior art, the present application has the advantages that the process is mature, the strength of the channel steel is used to complete the initial leveling of the slope of the cross trench grate in one time, a quick repair construction method of the cross trench grate with the inserted ductile iron is adopted, which can quickly level the cross trench grate and play a supporting role, has the advantages of simple construction and fast construction speed. The leveling, reinforcement and quick repair construction method of the cross trench grate with the inserted ductile iron can quickly replace the cross trench grate during operation and maintenance, reduce the construction difficulty and maintenance cost, effectively improve the flatness and firmness of the cross trench grate, improve the construction speed, effectively reduce the damage rate during operation and maintenance, and further effectively reduce the replacement difficulty after damage. DETAILED DESCRIPTION

[0027] The technical solutions will be described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0028] Embodiment 1

[0029] A quick repair construction method of a cross trench grate with an inserted ductile iron includes the following materials: a cross trench grate with an inserted ductile iron, a level, a level gauge, nylon wire, a welding machine, cast iron welding rods, channel steel, and geotextile, and includes the following steps:

[0030] S1. First, process 1-3 channel steels suitable for the length of the water ditch according to the length of the water ditch.

[0031] S2. Set 4-6 elevation control piles on the left and right sides of the water ditch along the direction of the water ditch, and set one group on each side every 3 meters.

[0032] S3. According to the elevation requirements and the slope of the top surface of the water ditch on the design drawing, measure the elevation on the elevation pile with the level gauge and make a mark, and pull a line with the nylon rope according to the mark.

[0033] S4. Refer to the position of the side line to return 19.5 cm as the top surface height of the channel steel groove, and firmly fix the channel steel groove upward on the concrete with expansion bolts.

[0034] S5. Install the cross trench grate with an inserted ductile iron, and use the level to level it again according to the elevation control line. If there is a gap between the cross trench grate leg and the channel steel, fill and raise it to ensure its stability, and then weld it firmly with the cast iron welding rods.

[0035] S6, binding cross-section ditch grate two sides of reinforcement and edge form installation.

[0036] S7, with plastic film will be cross-section ditch grate top cover firmly, with geotextile cross-section ditch grate leg gap plugging strict, prevent concrete pouring process appears leakage and pollution cross-section ditch grate.

[0037] S8, pouring concrete.

[0038] S9, operation and maintenance process damage, will be damaged cross-section ditch grate removal, put into new water grate and channel steel welding firmly can complete repair.

[0039] In the construction method, the nodular cast iron plug-in cross-section ditch grate single length is 500mm, the total length is 4m after combination, the single section outer width is 780mm, the inner width is 600mm, and the height is 195mm; the channel steel adopts 63# galvanized channel steel, the waist width is 63mm, the leg height is 40mm, and the channel steel is upward during use; the expansion bolt is used for fixing the channel steel and the concrete reinforcement, so that the height and slope of the channel steel can be adjusted; the welding rod adopts cast iron containing iron, so that the nodular cast iron cross-section ditch grate and the channel steel can be firmly welded; the nylon rope adopts micro-elastic nylon rope, the white nylon rope is convenient to tighten and has color contrast with the nodular cast iron grate, so that the observation is convenient; and the length of the level gauge is 3m long.

[0040] By using the above method, the installation flatness quality is qualified, and there is no cross-section ditch grate loosening and damage phenomenon in the running road section.

[0041] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A rapid repair construction method using ductile iron insert-type cross-sectional trench grates, comprising the following materials: insert-type cross-sectional trench grate, spirit level, level instrument, nylon thread, electric welding machine, cast iron welding rod, channel steel, and geotextile, and comprising the following steps: S1. First, process 1 to 3 channel steels suitable for the length of the ditch according to the length of the ditch; S2. Set 4-6 elevation control stakes on both sides of the ditch along the direction of the ditch, and set 1 set in pairs on each side every 3 meters. S3. According to the elevation requirements of the design drawings and the slope of the top surface of the ditch, use a level to measure the elevation on the elevation stake and mark it, and use a nylon rope to pull the line according to the mark; S4. Refer to the edge line position and lower it by 19.5cm as the height of the top surface of the channel steel. Use expansion bolts to firmly fix the channel steel to the concrete upwards. S5. Install the ductile iron insert-type cross-section grate. Use a spirit level to level it a second time, referring to the elevation control line. If there are gaps between the cross-section grate legs and the channel steel, fill and raise them to ensure stability. Then weld it firmly to the channel steel with cast iron welding rods. S6. Tie the reinforcing bars on both sides of the cross-section trench grate and install the side formwork; S7. Securely cover the top surface of the cross trench grate with plastic film, and seal the gaps between the cross trench grate support legs with geotextile to prevent grout leakage and contamination of the cross trench grate during concrete pouring. S8. Pouring concrete; S9. If damage occurs during operation and maintenance, remove the damaged cross-sectional trough grate, replace it with a new grate, and weld it firmly to the channel steel to complete the repair. In step S5, a 500*600*195 ductile iron insert-type transverse trench grate is used in the middle position, while 500*600*195 openable ductile iron insert-type transverse trench grates are used on both sides. In step S1, the channel steel is made of 63# galvanized channel steel with a web width of 63mm and a leg height of 40mm. During use, the channel faces upward, and the length of the channel steel is 4 meters. In step S5, the ductile iron insert-type transverse trench grate is leveled according to the elevation control line and level and welded firmly to the channel steel. The transverse trench grates on both sides are installed first, followed by the middle transverse trench grate.

2. The rapid repair construction method using ductile iron insert-type cross-sectional trench grates according to claim 1, characterized in that: In step S5, the welding rod is made of cast iron containing iron, which can firmly weld the ductile iron cross-section grate to the channel steel.

3. The rapid repair construction method for ductile iron insert-type cross-sectional trench grates according to claim 1, characterized in that: In step S4, the channel steel is adjusted in height according to the control line and is securely installed to the concrete surface using expansion bolts, with the center of the channel steel aligned with the support leg of the cross-section trench grate.

4. The rapid repair construction method using ductile iron insert-type cross-sectional trench grates according to claim 1, characterized in that: During the binding of the reinforcing bars on both sides of the transverse trench in step S6, the lower layer of reinforcing bars should be welded to the channel steel.

5. A rapid repair construction method for ductile iron insert-type cross-sectional trench grates according to claim 1, characterized in that: In step S5, the gaps between the adjacent cross-section trench grate legs need to be sealed with geotextile.

6. The rapid repair construction method using ductile iron insert-type cross-sectional trench grates according to claim 1, characterized in that: In step S7, before pouring concrete, the installed cross-sectional trench grate is covered with plastic film to prevent concrete contamination.