CN113236858A - Method for laying concrete cushion and steel pipe in top pipe - Google Patents
Method for laying concrete cushion and steel pipe in top pipe Download PDFInfo
- Publication number
- CN113236858A CN113236858A CN202110424265.4A CN202110424265A CN113236858A CN 113236858 A CN113236858 A CN 113236858A CN 202110424265 A CN202110424265 A CN 202110424265A CN 113236858 A CN113236858 A CN 113236858A
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- pipe
- steel
- jacking
- steel pipe
- pulleys
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground
- F16L1/036—Laying or reclaiming pipes on land, e.g. above the ground in the ground the pipes being composed of sections of short length
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
- F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
- F16L1/06—Accessories therefor, e.g. anchors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention discloses a method for laying a concrete cushion layer and steel pipes in a jacking pipe, which comprises the steps of dividing the concrete cushion layer into a plurality of units, manufacturing prefabricated blocks, installing supporting rollers along the inner line of the jacking pipe, installing conveyor belts along the supporting rollers, conveying the prefabricated blocks from an originating well to the inner line of the jacking pipe through the conveyor belts, placing pulleys along the concrete cushion layer, sequentially connecting front and rear pairs of pulleys in series through steel ropes, welding and lengthening the steel pipes forwards and backwards, welding and lengthening the next section of steel pipe into the jacking pipe after the originating well is welded with the previous section of steel pipe, sliding and supporting the steel pipes through the pulleys in the advancing process, constructing the jacking pipe and the steel pipes simultaneously, clamping and temporarily fixing the two ends of the jacking pipe and the steel pipes together through U-shaped steel clamps, then taking out the pulleys, and grouting and filling the space between the steel pipes and the jacking pipe. The concrete cushion layer has high construction efficiency, reduces the damage to the outer anticorrosive coating of the steel pipe, reduces the whole construction time, and can be repeatedly used.
Description
Technical Field
The invention belongs to the field of municipal construction, and particularly relates to a method for laying a concrete cushion and a steel pipe in a jacking pipe.
Background
Municipal works push pipe is mostly drainage pipe, and the internal diameter is generally below 3m, and its inside generally lays concrete cushion and steel pipe.
Cast-in-place construction is mostly adopted when the concrete cushion layer is laid in the top pipe, but the construction in the top pipe with narrow space and ultra-long (nearly 100m long) consumes time and labor and the quality is difficult to guarantee, the subsequent construction is influenced by the maintenance of the concrete, and the concrete is poured by manpower under the condition that a ground pump cannot enter the concrete cushion layer, so that the efficiency is low.
When a steel pipe is laid in the jacking pipe, two methods are generally adopted, one method is that the steel pipe is directly jacked after welding in an initial well, the method can damage the anticorrosive coating of the steel pipe, even in the jacking process of the steel pipe, the outer wall of the steel pipe can be damaged, and repair is needed in the later period; the other method is that a guide rail is arranged in the jacking pipe, a trolley is used for transporting the steel pipe, and the steel pipe is welded after being transported in place.
Disclosure of Invention
The invention aims to provide a method for laying a concrete cushion and a steel pipe in a jacking pipe, which has high construction efficiency of the concrete cushion, reduces the damage to an outer anticorrosive coating of the steel pipe, reduces the whole construction time and can be repeatedly used.
The technical scheme adopted by the invention is as follows:
a method for laying a concrete cushion and a steel pipe in a jacking pipe comprises the following steps: s1, dividing the concrete cushion into a plurality of units and manufacturing precast blocks, installing supporting rollers along the line in the jacking pipes, installing a conveyor belt along the supporting rollers and installing a power device of the conveyor belt in an originating well, conveying the precast blocks from the originating well to the interior of the jacking pipes along the line through the conveyor belt, assembling the precast blocks into the concrete cushion, then removing the supporting rollers and the conveyor belt and transferring the concrete cushion to the next jacking pipe for continuous concrete cushion construction; s2, pulleys are placed along the concrete cushion layer, every two pulleys are in a pair, the pulleys in the same pair are rigidly connected, the pulleys in the front and back pairs are sequentially connected in series through steel ropes, the steel pipe is constructed in a forward traction forward and backward welding and lengthening mode, the next steel pipe enters a jacking pipe after an originating well is welded with the previous steel pipe, the steel pipe is supported in a sliding mode through the pulleys in the forward process without jacking equipment, the jacking pipe and the steel pipe are constructed simultaneously, after all the steel pipes in the jacking pipe are in place, the two ends of the jacking pipe and the two ends of the steel pipe are clamped together and temporarily fixed through U-shaped steel clamps, then the pulleys are taken out, grouting is performed between the steel pipe and the jacking pipe, the U-shaped steel clamps are removed before the jacking pipe is filled, and then the steel pipe construction is continued in the next jacking pipe.
In step S1, the supporting rollers and the conveyor belts are installed along the lines on the two sides of the inner middle part of the top pipe, and the distance between the conveyor belts on the two sides can be used for workers to walk and operate.
In step S1, the concrete pad is divided into three types of equal-width cells, left, middle and right.
In step S1, the support roll is disposed on one right-angle side of the right-angle triangular roll frame, a baffle is disposed on the upper portion of one side of the right-angle side where the support roll is located, which is close to the center of the top pipe, and the other right-angle side of the right-angle triangular roll frame is mounted on the top pipe through the expansion bolts on the upper and lower portions.
In step S2, when the longitudinal distribution distance of the pulleys is too long, all the pulleys are divided into two sections, and the two sections of pulleys are taken out from the originating well and the destination well respectively after construction.
In step S2, the U-shaped steel clip is temporarily welded to the steel pipe to prevent the separation.
The invention has the beneficial effects that:
the concrete cushion is installed in an assembly mode, the precast blocks are conveyed in the long and narrow pipeline through the conveyor belt, conveying and installation are not affected mutually, and the construction efficiency of the concrete cushion is high; the pulley can ensure smooth advance of the steel pipe, reduce damage to an outer anticorrosive coating of the steel pipe, save jacking equipment, and reduce the overall construction time, wherein the jacking equipment can be used for next jacking pipe construction, and jacking pipe jacking, concrete cushion layer construction and steel pipe installation can be alternately carried out at the same time; the U-shaped steel clamps are arranged at the two ends of the steel pipe, so that the steel pipe is not dragged when the pulley is taken out, the pulley is prevented from being taken out, and most tools can be reused.
Drawings
FIG. 1 is a cross-sectional view of a top pipe and a cushion layer in an embodiment of the present invention.
Fig. 2 is a schematic view of a support roll, a right angle triangular roll frame and an expansion bolt in an embodiment of the present invention.
Fig. 3 is a sectional view showing the installation of the support roller and the right-angle triangular roller frame in the embodiment of the present invention.
FIG. 4 is a side view of the installation of the support rolls, right angle triangular roll stands, conveyor belt and power plant in an embodiment of the present invention.
FIG. 5 is a sectional view showing the state of conveying a steel pipe in the example of the present invention.
FIG. 6 is a side view of the steel pipe during transportation according to the embodiment of the present invention.
FIG. 7 is a sectional view showing the temporary fixing of the steel pipe and the ceiling coil in the embodiment of the present invention.
FIG. 8 is a schematic view of a U-shaped steel card in an embodiment of the present invention.
In the figure: 1-jacking a pipe; 2-prefabricating blocks; 3-a baffle plate; 4-supporting rolls; 5-expansion bolts; 6-a right-angled triangular roller frame; 7-a conveyor belt; 8-a steel pipe; 9-a pulley; 10-steel cord; 11-U-shaped steel clip.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1 to 8, a method for laying a concrete pad and a steel pipe in a jacking pipe includes the steps of:
s1, as shown in figure 1, dividing the concrete cushion into a plurality of units and manufacturing precast blocks 2, as shown in figures 3 and 4, installing supporting rollers 4 along the line in a jacking pipe 1, installing conveyor belts 7 along the supporting rollers 4 and installing power devices of the conveyor belts in an originating well, conveying the precast blocks 2 along the line from the originating well to the jacking pipe 1 through the conveyor belts 7, assembling the precast blocks 2 into the concrete cushion, removing the supporting rollers 4 and the conveyor belts 7, and transferring the precast blocks into the next jacking pipe 1 to continue concrete cushion construction;
s2, as shown in figures 5 and 6, pulleys 9 are placed along a concrete cushion layer, the pulleys 9 are paired in pairs, the pulleys 9 in the same pair are rigidly connected, the pulleys 9 in the front and back pairs are sequentially connected in series through steel ropes 10, the steel pipe 8 is constructed in a forward traction forward and backward welding lengthening mode, the next section of steel pipe 8 enters the jacking pipe 1 after an initial well is welded with the previous section of steel pipe 8, the steel pipe 8 does not need jacking equipment through sliding support of the pulleys 9 in the forward process, the jacking pipe 1 and the steel pipe 8 are constructed simultaneously, after all the steel pipes 8 in the jacking pipe 1 are in place, as shown in figures 7 and 8, the two ends of the jacking pipe 1 and the two ends of the steel pipe 8 are clamped together and temporarily fixed through U-shaped steel clamps 11, then the pulleys 9 are taken out, grouting is performed between the steel pipe 8 and the jacking pipe 1, the U-shaped steel clamps 11 are removed before full filling, and then the construction of the steel pipe 8 is continued in the next jacking pipe 1.
As shown in fig. 2 and 3, in this embodiment, in step S1, the support rollers 4 and the conveyor belts 7 are installed along two side lines in the middle of the top pipe 1, the distance between the conveyor belts 7 on two sides is suitable for workers to walk and operate, and two conveyor lines are arranged at the widest position, so that the conveying efficiency is improved and the operation space is ensured.
As shown in fig. 1, 3, 5 and 7, in the present embodiment, in step S1, the concrete pad is divided into three types of equal-width units, i.e., left, middle and right, and the left and right precast blocks 2 can be used in combination, thereby reducing the number of molds.
As shown in fig. 2 and 3, in the present embodiment, in step S1, the support rollers 4 are disposed on one right-angle side of the right-angle triangular roller frame 6, the baffle 3 is disposed on the upper portion of the side of the right-angle side where the support rollers 4 are disposed near the center of the top pipe 1, and the other right-angle side of the right-angle triangular roller frame 6 is mounted on the top pipe 1 by the expansion bolts 5 disposed on the upper and lower portions. The right-angle triangular roller frame 6 has simple structure and good supporting performance, and the baffle 3 can prevent the precast block 2 from sliding off.
In step S2, when the longitudinal distribution distance of the pulleys 9 is too long, all the pulleys 9 are divided into two sections, and the two sections of the pulleys 9 are taken out from the originating well and the destination well respectively after construction.
In step S2, the U-shaped steel clip 11 is temporarily welded to the steel pipe 8 to prevent the separation.
In the invention, the concrete cushion is installed in an assembly mode, the precast block 2 is conveyed in the long and narrow pipeline through the conveyor belt 7, the conveying and the installation are not influenced mutually, and the construction efficiency of the concrete cushion is high; the pulley 9 can ensure that the steel pipe 8 can smoothly advance, reduce the damage to the outer anticorrosive coating of the steel pipe 8, save jacking equipment, the jacking equipment can be used for the construction of the next jacking pipe 1, the jacking of the jacking pipe 1, the construction of a concrete cushion and the installation of the steel pipe 8 can be alternately carried out at the same time, and the whole construction time is reduced; u-shaped steel clamps 11 are installed at two ends of the steel pipe 8, so that the steel pipe 8 is not pulled when the pulley 9 is taken out, the pulley 9 is prevented from being taken out, and most tools can be reused.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (6)
1. A method for laying a concrete cushion and a steel pipe in a jacking pipe is characterized by comprising the following steps: the method comprises the steps of S1, dividing a concrete cushion into a plurality of units, manufacturing precast blocks, installing supporting rollers along the inner line of a jacking pipe, installing a conveyor belt along the supporting rollers and installing a power device of the conveyor belt in an originating well, conveying the precast blocks from the originating well to the inner line of the jacking pipe through the conveyor belt, assembling the precast blocks into the concrete cushion, removing the supporting rollers and the conveyor belt, and transferring the concrete cushion to the next jacking pipe for continuous concrete cushion construction; s2, pulleys are placed along the concrete cushion layer, every two pulleys are in a pair, the pulleys in the same pair are rigidly connected, the pulleys in the front and back pairs are sequentially connected in series through steel ropes, the steel pipe is constructed in a forward traction forward and backward welding and lengthening mode, the next steel pipe enters a jacking pipe after an originating well is welded with the previous steel pipe, the steel pipe is supported in a sliding mode through the pulleys in the forward process without jacking equipment, the jacking pipe and the steel pipe are constructed simultaneously, after all the steel pipes in the jacking pipe are in place, the two ends of the jacking pipe and the two ends of the steel pipe are clamped together and temporarily fixed through U-shaped steel clamps, then the pulleys are taken out, grouting is performed between the steel pipe and the jacking pipe, the U-shaped steel clamps are removed before the jacking pipe is filled, and then the steel pipe construction is continued in the next jacking pipe.
2. A method of laying a concrete pad and steel pipe in a jacking pipe as claimed in claim 1, wherein: in step S1, the supporting rollers and the conveyor belts are installed along the lines on the two sides of the inner middle part of the top pipe, and the distance between the conveyor belts on the two sides can be used for workers to walk and operate.
3. A method of laying a concrete pad and steel pipe in a jacking pipe as claimed in claim 1, wherein: in step S1, the concrete pad is divided into three types of equal-width cells, left, middle and right.
4. A method of laying a concrete pad and steel pipe in a jacking pipe as claimed in claim 1, wherein: in step S1, the support roll is disposed on one right-angle side of the right-angle triangular roll frame, a baffle is disposed on the upper portion of one side of the right-angle side where the support roll is located, which is close to the center of the top pipe, and the other right-angle side of the right-angle triangular roll frame is mounted on the top pipe through the expansion bolts on the upper and lower portions.
5. A method of laying a concrete pad and steel pipe in a jacking pipe as claimed in claim 1, wherein: in step S2, when the longitudinal distribution distance of the pulleys is too long, all the pulleys are divided into two sections, and the two sections of pulleys are taken out from the originating well and the destination well respectively after construction.
6. A method of laying a concrete pad and steel pipe in a jacking pipe as claimed in claim 1, wherein: in step S2, the U-shaped steel clip is temporarily welded to the steel pipe to prevent the separation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110424265.4A CN113236858B (en) | 2021-04-20 | 2021-04-20 | Method for laying concrete cushion layer and steel pipe in jacking pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110424265.4A CN113236858B (en) | 2021-04-20 | 2021-04-20 | Method for laying concrete cushion layer and steel pipe in jacking pipe |
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| CN113236858A true CN113236858A (en) | 2021-08-10 |
| CN113236858B CN113236858B (en) | 2023-09-15 |
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| CN202110424265.4A Active CN113236858B (en) | 2021-04-20 | 2021-04-20 | Method for laying concrete cushion layer and steel pipe in jacking pipe |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114562607A (en) * | 2022-03-11 | 2022-05-31 | 北京市市政四建设工程有限责任公司 | Method for municipal pipeline construction in jacking pipe |
| CN114857353A (en) * | 2022-04-21 | 2022-08-05 | 中铁一局集团有限公司 | Construction method of jacking pipe internally-penetrated steel sleeve steel steam pipeline |
| CN115370828A (en) * | 2022-09-09 | 2022-11-22 | 长江勘测规划设计研究有限责任公司 | Sewage drag pipe structure for passing through water source protection area and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114857353A (en) * | 2022-04-21 | 2022-08-05 | 中铁一局集团有限公司 | Construction method of jacking pipe internally-penetrated steel sleeve steel steam pipeline |
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| CN115370828A (en) * | 2022-09-09 | 2022-11-22 | 长江勘测规划设计研究有限责任公司 | Sewage drag pipe structure for passing through water source protection area and construction method |
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|---|---|
| CN113236858B (en) | 2023-09-15 |
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