CN113700935A - Grooving pipe burying structure for soft soil area and construction method - Google Patents
Grooving pipe burying structure for soft soil area and construction method Download PDFInfo
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- CN113700935A CN113700935A CN202111057471.2A CN202111057471A CN113700935A CN 113700935 A CN113700935 A CN 113700935A CN 202111057471 A CN202111057471 A CN 202111057471A CN 113700935 A CN113700935 A CN 113700935A
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- pipe
- pipeline
- supporting beam
- inner supporting
- grouting
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/02—Sheet piles or sheet pile bulkheads
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
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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
Abstract
The invention discloses a slotting and pipe-burying structure and a construction method for a soft soil area, wherein the construction method for the slotting and pipe-burying of the soft soil area comprises the following steps: arranging a containment sheet pile and a reinforcing anchor pile outside the pipeline arrangement groove, and arranging a weight airbag at the bottom of the pipeline arrangement groove; arranging a first arched inner supporting beam and a second arched inner supporting beam between the enclosure sheet piles, and arranging a supporting beam control body between the first inner supporting beam and the second inner supporting beam; the pipe moving hanger and the pipeline are moved longitudinally along the support hanging beam through the shifting inhaul cable, and the lifting height of the pipeline is controlled through the drop pipe position control body; firstly, limiting the position of a pipeline through an arc plate position adjusting bolt and a side pressure arc plate of a tube top positioning body, and then pressing and injecting slurry into a slurry filling bag through a bag slurry injection tube to fix the positioning body; the storage box can longitudinally move along the support hanging beam, and can synchronously carry out the construction of the tube periphery filling bodies on the two sides of the pipeline through the discharge port. The invention can effectively reduce the difficulty of site construction, improve the laying quality of pipelines and improve the construction efficiency.
Description
Technical Field
The invention belongs to the technical field of pipeline laying construction in a soft soil area, and particularly relates to a slotting and pipe burying structure and a construction method in the soft soil area.
Background
In recent years, the grooving pipe-burying technology is gradually applied to hydraulic engineering due to the advantages of simple construction process, short construction time and the like. When laying facilities in soft soil areas, the technical problems of stable channel excavation, pipeline hanging positioning, dense pipe periphery filling and the like are often solved.
In the prior art, for example, chinese patent with publication number CN212896460U discloses a municipal pipe network slotting and pipe burying structure, wherein a main body is provided with an accommodating groove, the bottom of the accommodating groove is a circular arc surface, and the accommodating groove is used for accommodating a pipeline; the limiting block group is detachably arranged at the bottom of the accommodating groove and is used for limiting the pipeline. Although the technology solves the problem of limiting the position of the pipeline, the technology has improvements in the aspects of improving the stability of the channel, accurately positioning the pipeline, densely filling the periphery of the pipeline and the like.
In view of this, in order to effectively reduce the construction quality of the slotted pipe-burying in the soft soil area, the invention of the slotted pipe-burying structure and the construction method in the soft soil area, which can improve the stability of the channel, improve the positioning precision of pipeline installation and improve the compaction effect of the filler around the pipe, is urgently needed.
Disclosure of Invention
The invention aims to provide a slotted pipe burying structure and a construction method, which can not only improve the stability of a channel, but also improve the installation and positioning precision of a pipeline and improve the slotted pipe burying structure in a soft soil area.
In a first aspect, an embodiment of the present application provides a method for constructing a slotted buried pipe in a soft soil area, including the following construction steps: step one, construction preparation: surveying and determining positions of the enclosure sheet piles and the pipeline, and preparing construction materials and devices; step two, connecting the enclosure sheet pile with a rear grouting pipe: the method comprises the following steps of (1) driving an enclosure sheet pile, arranging a pressing plate connecting plate on each of two sides of a rear grouting pipe, fixing the rear grouting pipe at the bottom end of the enclosure sheet pile through the pressing plate connecting plate, and forming a pipe wall grout overflow hole along the pipe wall of the rear grouting pipe; step three, driving the enclosure sheet pile and the reinforcing anchor pile: arranging a row of fender sheet piles and a row of reinforcing anchor piles on two sides of a pipeline arrangement axis determined by surveying, arranging inter-pile tie bars between the fender sheet piles and the reinforcing anchor piles on the same side, excavating a pipeline arrangement groove between the two rows of fender sheet piles, arranging a ballast air bag at the bottom of the pipeline arrangement groove, and filling an air bag filling body into the ballast air bag by an external pressure filling pump body; fourthly, arranging the first inner supporting beam and the second inner supporting beam: arranging two rows of connecting plate positioning grooves on the inner sides of two rows of fender sheet piles, arranging a second inner supporting beam and a first inner supporting beam between the two rows of connecting plate positioning grooves which are mirror images of each other left and right, arranging a supporting beam control body between the second inner supporting beam and the first inner supporting beam, and arranging a supporting hanging beam on the lower surface of the first inner supporting beam along the longitudinal direction of the pipeline arrangement groove; step five, sliding and hoisting the pipeline: installing a pipe moving hanger at the bottom of a first inner supporting beam, wherein the upper part of the pipe moving hanger is connected with a supporting hanging beam through a pipe moving roller, the side surface of the pipe moving hanger is connected with external rolling equipment through a pipe moving inhaul cable, the pipe moving hanger comprises a pipe falling control body, a sling side plate and a flexible sling which are sequentially connected from top to bottom, a plurality of slurry filling bags are arranged along the longitudinal direction of a pipeline arrangement groove, the pipeline is firstly hung on the flexible sling through external hoisting equipment, then the pipeline is moved to a set position along the supporting hanging beam through the pipe moving inhaul cable, and then the pipeline falls to the bottom of the pipeline arrangement groove through the pipe falling control body; step six, stably positioning the pipeline: discharging an air bag filling body in the ballast air bag, taking out the ballast air bag, arranging a pipe top positioning body between the enclosure sheet pile and the pipeline, and limiting the position of the pipeline by an arc plate position adjusting bolt and a side pressure arc plate of the pipe top positioning body; seventhly, construction of a filler around the pipe: the upper part of the box girder connecting rib is connected with the supporting hanging beam through a box moving roller, a shifting inhaul cable is arranged on the side surface of the box girder connecting rib, the position of the material storage box is controlled through the shifting inhaul cable, the lower part of the box girder connecting rib is connected with the material storage box, a loose accumulation body is filled in the material storage box, and the loose accumulation body in the material storage box is filled to the periphery of the pipeline to form a periphery filling body; step eight, constructing the gap filling grouting body and the light sealing layer: after the construction of the filling body around the pipe is finished, the constraint of the pipeline is removed, and the soil body around the pipe is pressed to be grouted through the grouting pipe to form the gap filling grouting body.
In a second aspect, an embodiment of the application provides a pipeline sliding hoisting structure, and the structure is constructed according to the construction method for grooving and pipe burying in the soft soil area in the first aspect.
Compared with the prior art, the embodiment of the application has the following characteristics and beneficial effects:
(1) the enclosure sheet pile and the rear grouting pipe are synchronously sunk, grouting can be carried out through the rear grouting pipe after the enclosure sheet pile is pulled out to form the filling grouting body, the gap of the enclosure sheet pile can be quickly sealed, and the compactness of the filler around the pipe is improved.
(2) According to the invention, the enclosure sheet piles and the reinforcing anchor piles are arranged on the outer sides of the pipeline arrangement grooves, the inter-pile tie bars are arranged between the enclosure sheet piles and the reinforcing anchor piles, the two rows of weight pressing air bags are arranged at the bottom of the pipeline arrangement grooves, and the enclosure sheet piles are pressed through the air bag filling bodies, so that the stability of the enclosure sheet piles can be effectively improved.
(3) According to the invention, the first inner supporting beam and the second inner supporting beam with arched longitudinal sections are arranged between the enclosure sheet piles, and the supporting beam control body is arranged between the first inner supporting beam and the second inner supporting beam which are opposite to each other, so that the self-balancing jacking of the first inner supporting beam and the second inner supporting beam is realized, and the stability of the enclosure sheet piles is improved.
(4) The pipe moving hanger and the pipeline move longitudinally along the support hanging beam through the shifting inhaul cable, so that the problem of hanging and positioning of the pipeline in a bad geological region is solved; meanwhile, the lifting height of the pipeline is controlled by the drop pipe position control body, so that the pipeline is quickly sunk.
(5) The invention firstly limits the position of the pipeline through the arc plate position adjusting bolt and the side pressure arc plate of the tube top positioning body, and then presses and injects the slurry into the slurry filling bag through the bag slurry injecting tube to fix the positioning body; in the grouting positioning body pressure injection process, the length of the arc plate positioning bolt is synchronously adjusted, and the accuracy of the control of the longitudinal gradient of the pipeline is improved.
(6) The storage box can move longitudinally along the support hanging beam, and can synchronously carry out the construction of the fillers around the pipe at two sides of the pipeline through the two discharge ports at the lower part of the storage box, thereby effectively reducing the influence of the construction of the fillers around the pipe on the pipeline and improving the construction quality of the fillers around the pipe.
Drawings
FIG. 1 is a flow chart of the construction process of the deep soft soil vacuum preloading and dynamic compaction combined reinforcement of the invention;
FIG. 2 is a schematic view of the connection structure of the fender sheet pile and the post-grouting pipe in FIG. 1;
FIG. 3 is a schematic view of the connection structure of the rear grouting pipe and the immersed tube pressing plate in FIG. 2;
FIG. 4 is a schematic view of the pipeline slipping and hoisting structure of FIG. 1;
FIG. 5 is a schematic view of a stable positioning structure of the pipe of FIG. 1;
FIG. 6 is a schematic structural diagram of the gap-filling grouting body and the light sealing layer in FIG. 1 after construction is completed.
In the figure: 1-enclosing sheet piles; 2-a pipeline; 3-post grouting pipe; 4-pressing plate connecting plates; 5-pipe wall grout overflow hole; 6-sinking the tube pressing plate; 7-sinking the pipe to protrude falcon; 8-convex tenon connecting grooves; 9-reinforcing anchor piles; 10-inter-pile lacing wire; 11-a pipeline layout groove; 12-weight air bag; 13-an airbag filling body; 14-connecting plate positioning grooves; 15-a second inner bracing beam; 16-a first inner support beam; 17-supporting beam control body; 18-supporting hanging beams; 19-a pipe transfer hanger; 20-pipe moving rollers; 21-a drop control; 22-sling side plates; 23-a flexible sling; 24-slurry-filled pouches; 25-moving the pipe inhaul cable; 26-a tube top positioning body; 27-arc plate positioning bolt; 28-side pressure arc plate; 29-bladder grouting pipe; 30-slurry-fixing the positioning body; 31-bladder vent tube; 32-box girder connecting ribs; 33-box moving rollers; 34-a material storage box; 35-a feed inlet; 36-loose bulk; 37-a discharge outlet; 38-peritubular packing; 39-shift cable; 40-soil body around the pipe; 41-gap filling grouting body; 42-brace beam connection plate; 43-positioning bolt rotary hinge; 44-reinforcing the compact mass; 45-light weight sealing layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Technical requirements of on-site hoisting construction, technical requirements of profile steel rolling and welding construction, technical requirements of mud jacking construction, technical requirements of bag sewing construction and the like are omitted in the embodiment, and the embodiment of the method related to the invention is mainly explained.
Example one
The embodiment of the application provides a construction method for slotting and pipe burying in a soft soil area, which comprises the following steps of 1:
step one, construction preparation:
surveying and determining the positions of the enclosure sheet pile 1 and the pipeline 2, and preparing construction materials and devices;
step two, connecting the enclosure sheet pile with a rear grouting pipe:
the method comprises the following steps of (1) driving an enclosure sheet pile 1, arranging a press plate connecting plate 4 on each of two sides of a rear grouting pipe 3, fixing the rear grouting pipe 3 at the bottom end of the enclosure sheet pile 1 through the press plate connecting plate 4, and forming a pipe wall grout overflow hole 5 along the pipe wall of the rear grouting pipe 3;
step three, driving the enclosure sheet pile and the reinforcing anchor pile:
arranging a row of fender sheet piles 1 and a row of reinforcing anchor piles 9 on two sides of a pipeline 2 arrangement axis determined by surveying, arranging inter-pile tie bars 10 between the fender sheet piles 1 and the reinforcing anchor piles 9 on the same side, excavating a pipeline arrangement groove 11 between the two rows of fender sheet piles 1, arranging a ballast air bag 12 at the bottom of the pipeline arrangement groove 11, and filling an air bag filling body 13 into the ballast air bag 12 through an external pressure filling pump body;
fourthly, arranging the first inner supporting beam and the second inner supporting beam:
arranging two rows of connecting plate positioning grooves 14 on the inner sides of two rows of fender sheet piles 1, arranging a second inner supporting beam 15 and a first inner supporting beam 16 between the two rows of connecting plate positioning grooves 14 which are mirror images of each other left and right, arranging a supporting beam control body 17 between the second inner supporting beam 15 and the first inner supporting beam 16, and arranging a supporting hanging beam 18 on the lower surface of the first inner supporting beam 16 along the longitudinal direction of the pipeline arrangement groove 11;
step five, sliding and hoisting the pipeline:
installing a pipe moving hanger 19 at the bottom of a first inner supporting beam 16, wherein the upper part of the pipe moving hanger 19 is connected with a supporting hanging beam 18 through a pipe moving roller 20, the side surface of the pipe moving hanger 19 is connected with external rolling and pulling equipment through a pipe moving inhaul cable 25, the pipe moving hanger 19 comprises a pipe falling control body 21, a sling side plate 22 and a flexible sling 23 which are sequentially connected from top to bottom, a plurality of slurry filling bag bags 24 are longitudinally arranged along a pipeline layout groove 11, firstly, the pipeline 2 is hung on the flexible sling 23 through external hoisting equipment, then, the pipeline 2 is moved to a set position along the supporting hanging beam 18 through the pipe moving inhaul cable 25, and then, the pipeline 2 falls to the bottom of the pipeline layout groove 11 through the pipe falling control body 21;
step six, stably positioning the pipeline:
discharging the air bag filling body 13 in the ballast air bag 12, taking out the ballast air bag 12, arranging a pipe top positioning body 26 between the enclosure sheet pile 1 and the pipeline 2, and limiting the position of the pipeline 2 by an arc plate positioning bolt 27 and a side pressure arc plate 28 of the pipe top positioning body 26;
seventhly, construction of a filler around the pipe:
the upper part of the box girder connecting rib 32 is connected with the supporting hanging beam 18 through a box moving roller 33, a shifting inhaul cable 39 is arranged on the side surface of the box girder connecting rib 32, the position of the material storage box 34 is controlled through the shifting inhaul cable 39, the lower part of the box girder connecting rib 32 is connected with the material storage box 34, a loose accumulation body 36 is filled in the material storage box 34, and the loose accumulation body 36 in the material storage box 34 is filled to the periphery of the pipeline 2 so as to form a periphery filling body 38;
step eight, constructing the gap filling grouting body and the light sealing layer:
after the construction of the filler 38 around the pipe is completed, the constraint of the pipe 2 is released, and the soil 40 around the pipe is grouted through the grouting pipe to form a gap-filling grouting body 41.
Fig. 2 is a schematic diagram of a connecting structure of a fender sheet pile and a post-grouting pipe, in the first step to the second step, fig. 2 is a cross-sectional diagram of a wire-drawing steel sheet pile, as shown in fig. 2, positions of a fender sheet pile 1 and a pipeline 2 need to be determined in advance, the fender sheet pile 1 as shown in fig. 1 is erected, the fender sheet pile 1 and the post-grouting pipe 3 are sunk synchronously, and the post-grouting pipe 3 is arranged to form a gap-filling grouting body 41 through grouting the post-grouting pipe 3.
Fig. 3 is a schematic view of a connection structure of the rear grouting pipe and the immersed tube pressing plate, and in the second step, as shown in fig. 3, the rear grouting pipe 3 is inserted and fixed with the immersed tube pressing plate 6. Specifically, a pipe sinking pressing plate 6 is arranged at the bottom end of the enclosure pile, and a pipe sinking tongue 7 on the lower surface of the pipe sinking pressing plate 6 is inserted into and fixed to a tongue connecting groove 8 on the upper surface of the pressing plate connecting plate 4.
Fig. 4 is a schematic diagram of a pipeline sliding hoisting structure, and it should be noted that fig. 4 is a side view, the enclosure sheet pile shows two side lines, and as shown in fig. 4, the pipe-moving cable 25 pulls the pipe-moving hanger 19 to move on the support hanging beam 18 below the first inner supporting beam 16, so as to implement sliding hoisting construction on the pipeline 2.
The cross section of the supporting hanging beams 18 is L-shaped, the distance between the two supporting hanging beams 18 which are mirror images of each other left and right is smaller than the width of the cross section of the pipe moving hanger 19, and the pipe moving hanger 19 is limited between the two rows of supporting hanging beams 18 and rolls on the supporting hanging beams 18 through the pipe moving roller 20.
The difference between the embodiment of the present application and the prior art lies in that, the structure for suspending the mobile hanging pipe is composed of components such as the first inner supporting beam 16, the second inner supporting beam 15, the supporting beam control body 17, and the first inner supporting beam 16 and the second inner supporting beam 15 are respectively limited between two rows of connecting plate positioning grooves 14 which are mirror images of each other in the left and right direction, so the first inner supporting beam 16 plays a role in pushing up the second inner supporting beam 15, and the second inner supporting beam 15 plays a role in pressing down the first inner supporting beam 16, and therefore, the overall structure for suspending the mobile hanging pipe is self-balanced in the first inner supporting beam 16 and the second inner supporting beam 15, so that the stability of the enclosure plate pile 1 is improved, and the two rows of enclosure plate piles 1 cannot be bent or shaken inwards due to the weight of the pipeline 2, and the flatness is not affected.
Referring again to fig. 3, in fig. 3 the sheet pile 1 is further reinforced by reinforcing anchor piles 9 and inter-pile tie bars 10. Specifically, the enclosure sheet pile 1 and the reinforcing anchor pile 9 are arranged on the outer side of the pipeline 2 from near to far, an inter-pile tie bar 10 is arranged between the enclosure sheet pile 1 and the reinforcing anchor pile 9 on the same side, and the bending resistance of the enclosure sheet pile 1 is improved through the tension of the reinforcing anchor pile 9 on the enclosure sheet pile 1, so that the enclosure sheet pile 1 is not easy to shake or bend.
In one embodiment, the method further comprises: and supporting beam connecting plates 42 are arranged at two ends of the first inner supporting beam 16 and the second inner supporting beam 15, and the supporting beam connecting plates 42 are connected with the connecting plate positioning grooves 14.
Referring to fig. 3 and 4, the supporting beam connecting plate 42 is disposed in the connecting plate positioning slot 14 and is fixedly connected to the first inner supporting beam 16 and the second inner supporting beam 15, so that the first inner supporting beam 16 and the second inner supporting beam 15 can be clamped in the connecting plate positioning slot 14. The supporting beam connecting plate 42 can be fixed in the connecting plate positioning groove 14 by clamping or welding.
Furthermore, the first inner supporting beam 16 is in an upward convex arch shape, the second connecting beam is in a downward convex arch shape, and the supporting beam position control body is connected to the middle parts of the first inner supporting beam 16 and the second connecting beam.
Referring to fig. 3 and 4 again, two ends of the supporting beam position control body are respectively welded to the second inner supporting beam 15 and the first inner supporting beam 16, and are fixed at the middle positions of the second inner supporting beam 15 and the first inner supporting beam 16 with smooth radians. The supporting beam control body 17 can adopt a hydraulic jack, and the integral structure formed by the enclosure sheet pile 1, the hydraulic jack, the first inner supporting beam 16 and the second inner supporting beam 15 can improve the stability of the enclosure sheet pile 1 through self-balancing jacking.
Referring again to fig. 4, the ballast air bags 12 are arranged in two rows and longitudinally along the pipe laying groove 11, and each row of ballast air bags 12 respectively abut against the inner sides of the fender sheet piles. The air bag filling body 13 filled in the ballast air bag 12 is used for ballast of the enclosure plate pile 1, and the stability of the enclosure plate pile 1 is effectively improved.
In the sixth step, after the pipeline 2 falls to the bottom of the pipeline layout groove 11, the airbag filling bodies 13 are firstly discharged, the ballast airbags 12 are taken out, then the pipe moving hanger 19 is removed, and then the storage box 34 is connected with the box moving roller 33 through the box beam connecting rib 32, so that the box moving roller 33 rolls on the support hanging beam 18 to adjust the position of the storage box 34. The storage tank 34 is used to fill the loose stack 36 around the pipe 2. In order to better fix the position of the pipeline 2, a pipe top positioning body 26 is arranged between the enclosure sheet pile 1 and the pipeline 2, and the position of the pipeline 2 is limited by an arc plate positioning bolt 27 and a side pressure arc plate 28 of the pipe top positioning body 26.
Specifically, the tube top positioning body 26 comprises an arc plate positioning bolt 27, a side pressure arc plate 28 and a positioning bolt rotating hinge 43, and the length of the tube top positioning body 26 can be increased/shortened by adjusting the arc plate positioning bolt 27, so that the pipelines 2 with different sizes are limited. When the arc plate positioning pin 27 is extended, the circumferential side of the pipe 2 can be pressed so that the pipe 2 is pressed against the bottom of the pipe laying groove 11. For example, the arc plate positioning bolt 27 may adopt a design that the nut is sleeved outside the screw rod, the fastening directions of the screw rods on the two sides of the nut are opposite, and the length adjustment may be realized by rotating the nut counterclockwise or clockwise.
In one embodiment, step six further includes: arranging a plurality of grouting bag bags 24 along the longitudinal direction of the pipeline arrangement groove 11, arranging a bag grouting pipe 29 and a bag exhaust pipe 31 on the grouting bag bags 24, and under the condition that the pipeline 2 falls to the bottom of the pipeline arrangement groove 11, pressing a grouting fixing positioning body 30 in the grouting bag bags 24 through the bag grouting pipe 29, and exhausting air in the grouting bag bags 24 through the bag exhaust pipe 31 to enable the grouting bag bags 24 to fill the gaps at the bottoms of the pipeline 2 and the pipeline arrangement groove 11; in the process of grouting the grout positioning body 30, the length of the arc plate positioning bolt 27 is adjusted, and the pressure of the grout positioning body 30 is controlled, so that the longitudinal gradient of the pipeline 2 meets the requirement.
Fig. 5 is a schematic view showing a pipe fixing and positioning structure, and as shown in fig. 5, after the ballast bladder 12 is removed, the grouting bladder 24 is arranged, and the pipe 2 is fixed by injecting the grouting fixing body 30 into the grouting bladder 24 through the bladder grouting pipe 29.
In step seven, the pipe 2 is fixed in position by filling the pipe filler 38 around the pipe through the storage tank 34.
Specifically, a feed inlet 35 is provided at the top of the storage tank 34, two discharge ports 37 are provided at the top of the storage tank 34, the discharge ports 37 are distributed on two sides of the pipeline 2 from left to right, the construction of the peripheral filling bodies 38 on two sides of the pipeline 2 is synchronously performed through the two discharge ports 37 of the storage tank 34, and the constructed peripheral filling bodies 38 cover the slurry fixation positioning body 30.
After the construction of the pipe periphery filler 38 is completed, the restraint of the pipe 2 is released. FIG. 6 is a schematic structural diagram of the completion of the construction of the gap-filling grouting body and the light sealing layer. Referring to fig. 5 to 6, before the tube periphery filling body 38 is not poured, the tube 2 is constrained by the tube top positioning body 26, and when a layer of tube periphery filling body 38 is poured to ensure that the tube 2 is stable, the constraint of the tube 2 is released. Specifically, under the condition that the peripheral filling body 38 is filled to the level of the pipe top positioning body 26, the pipeline 2 can be confirmed to be stable and immovable after the device is dismantled, so that the constraint of the pipe top positioning body 26 on the pipeline 2 is removed, and when the peripheral filling body 38 is filled to the level of the bottom of the storage tank 34, the second inner support beam 15 and the first inner support beam 16 are sequentially taken out; after the pouring of the pipe periphery filling body 38 is completed, the inter-pile tie bars 10 between the enclosure sheet pile and the reinforcing anchor pile 9 are firstly removed, and then the enclosure sheet pile and the reinforcing anchor pile 9 are pulled out, so that the whole construction step of slotting and pipe burying is completed.
Example two
The embodiment of the application provides a 2 hoisting structure that slide of pipeline, refer to fig. 2 to fig. 6, the structure has included according to the soft soil area fluting pipe laying's that embodiment one provided construction method play the pipeline 2 structure of hoist and mount effect that slides in the work progress, and the 2 hoisting structure that slides of pipeline that the embodiment provided is operated to this embodiment through the construction method that embodiment one provided can realize that pipeline 2 is steadily spacing in the channel and pipeline 2 location is accurate, the pipe week is filled effects such as closely knit.
To sum up, the embodiment of the application provides a construction method for slotting and pipe burying in a soft soil area and a sliding hoisting structure for a pipeline 2, so that the stability of a channel, the positioning performance of the pipeline 2 and the peripheral filling compactness of the pipeline are improved. The present invention will be further described with reference to specific models of each construction element, and it should be noted that the models and methods for manufacturing the elements are only exemplary, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention.
In particular, in the present example,
the enclosure sheet pile 1 and the enclosure sheet pile 1 can adopt steel sheet piles with the specification of 160 multiplied by 40 multiplied by 20 multiplied by 2.5.
The pipe 2 may be a reinforced concrete pipe having a diameter of 800 mm.
The post-grouting pipe 3 may be rolled from a steel pipe having a diameter of 60 mm.
Both the pressing plate connecting plate 4 and the immersed tube pressing plate 6 can be formed by rolling steel plates with the thickness of 10mm, and a convex tenon connecting groove 8 and an immersed tube convex tenon 7 are respectively arranged on the upper surface of the pressing plate connecting plate 4 and the lower surface of the immersed tube pressing plate 6; wherein the height of the immersed tube falcon 7 is 2cm, and the width thereof is 6 cm; protruding falcon even slot 8 and immersed tube protruding falcon 7 phase-match.
The enclosure sheet piles and the reinforcing anchor piles 9 are arranged on the outer side of the pipeline 2 from near to far, and the space between the enclosure sheet piles and the reinforcing anchor piles 9 is 5 m; the reinforcing anchor piles 9 are arranged in parallel with the enclosure plate piles every 20 m; the weight air bag 12 can be a closed cavity body sewed by a rubber sheet with the thickness of 1mm, and the section width is 30cm and the height is 20 cm.
The diameter of the pipe wall grout-overflowing hole 5 is 40 mm.
The reinforcing anchor pile 9 can adopt a steel plate pile with the specification of 160 multiplied by 40 multiplied by 20 multiplied by 2.5.
The inter-pile lacing wire 10 can be formed by combining a screw rod with the diameter of 60mm and a nut.
The cross section of the pipeline distribution groove 11 is trapezoidal, the bottom width is 1200mm, the top width is 2500mm, and the height is 2000 mm.
The air bag filling body 13 can be clay slurry.
The connecting plate positioning groove 14 can be formed by cutting a steel plate with the thickness of 10mm into a steel plate with the height of 5cm and the length of 30cm and is vertically welded and connected with the enclosure plate pile.
The second inner supporting beam 15 and the first inner supporting beam 16 are both formed by rolling H-shaped steel with the specification of 100 multiplied by 6 multiplied by 8, the longitudinal section of the H-shaped steel is arched, two ends of the H-shaped steel are both provided with supporting beam connecting plates 42 connected with the connecting plate positioning grooves 14, the arch of the first inner supporting beam 16 is protruded upwards, the arch of the second inner supporting beam 15 is protruded downwards, and the central angle of the arch is 30 degrees.
The supporting beam control body 17 can adopt a hydraulic jack of 100 tons, and two ends of the supporting beam control body are respectively connected with the second inner supporting beam 15 and the first inner supporting beam 16 in a welding way; the supporting hanging beam 18 can be formed by rolling a steel plate with the thickness of 10mm, is L-shaped in cross section and 30cm wide, and is connected with the first inner supporting beam 16 in a welding mode.
The pipe moving hanger 19 can be formed by rolling a steel plate, and one side surface of the pipe moving hanger is connected with external rolling equipment through a pipe moving inhaul cable 25.
The tube moving roller 20 can be a 3-inch directional caster.
The falling pipe control body 21 can adopt a 10-ton hydraulic jack, and two ends of the falling pipe control body are respectively connected with the sling side plate 22 and the pipe moving hanger 19 in a welding mode.
The sling side plates 22 may be rolled from a steel plate having a thickness of 10 mm.
The flexible sling 23 may be a 30mm diameter rope.
The slurry filling bag 24 can be a closed cavity sewn by a rubber sheet with the thickness of 1mm, the width of the cavity is 50cm, and bag grouting pipes 29 and bag exhaust pipes 31 are respectively arranged on the side walls of the slurry filling bag 24 on the two sides of the pipeline 2. The bladder grouting pipe 29 may be a steel pipe having a diameter of 60 mm. The bladder vent pipe 31 may be a steel pipe having a diameter of 30 mm.
The pipe shifting inhaul cable 25 and the shifting inhaul cable 39 can adopt a steel wire rope with the diameter of 20 mm.
The tube top positioning body 26 comprises an arc plate positioning bolt 27, a side pressure arc plate 28 and a positioning bolt rotating hinge 43; the arc plate positioning bolt 27 comprises a screw rod and a nut with the diameter of 30mm, the fastening directions of the screw rods on the two sides of the nut are opposite, one end of the arc plate positioning bolt 27 is connected with the enclosure sheet pile through a positioning bolt rotating hinge 43, and the other end of the arc plate positioning bolt is connected with the side pressure arc plate 28 in a welding mode; the side pressure arc plates 28 may be rolled from steel plate and have an inside diameter equal to the outside diameter of the pipe 2.
The set of grout 30 may be formed from a cement mortar designated M15.
The box-moving rollers 33 may be 3-inch directional casters.
The material storage box 34 can be formed by welding steel plates with the thickness of 1mm, is in a round table shape, has the diameter of 1000mm at the top surface, the diameter of 800mm at the bottom surface and the height of 500mm, is connected with the box girder connecting rib 32 in a welding way, and is provided with 1 feeding hole 35 at the upper part and 2 discharging holes 37 opposite to each other in a mirror image manner at the lower part; the feed inlet 35 has a diameter of 300 mm. The diameter of the discharge opening 37 is 200 mm.
The box girder connecting rib 32 can be formed by rolling a steel plate with the thickness of 10mm, and one side surface of the box girder connecting rib is firmly connected with the shift inhaul cable 39.
The loose packing 36 and the peri-tubular packing 38 may be medium grit with a uniform particle size, wherein the degree of compaction of the peri-tubular packing 38 is 95%.
The soil body 40 around the pipe is muddy soil in a plastic state.
The supporting beam connecting plate 42 can be rolled by a steel plate with the thickness of 10mm and is connected with the second inner supporting beam 15 and the first inner supporting beam 16 in a welding mode.
The positioning bolt pivot 43 can be a spherical hinge with a diameter of 30 mm.
The lightweight sealer 45 may be a foamed concrete having a weight of 0.9g/cm 3.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A construction method for slotting and pipe burying in a soft soil area is characterized by comprising the following construction steps:
step one, construction preparation:
surveying and determining the positions of the enclosure sheet pile (1) and the pipeline (2), and preparing construction materials and devices;
step two, connecting the enclosure sheet pile (1) with the rear grouting pipe (3):
the method comprises the following steps of (1) driving a fender sheet pile (1), arranging a pressing plate connecting plate (4) on each of two sides of a rear grouting pipe (3), fixing the rear grouting pipe (3) at the bottom end of the fender sheet pile (1) through the pressing plate connecting plate (4), and forming a pipe wall grout overflow hole (5) along the pipe wall of the rear grouting pipe (3);
step three, driving the enclosure sheet pile and the reinforcing anchor pile:
arranging a row of enclosure plate piles (1) and a row of reinforcing anchor piles (9) on two sides of a pipeline (2) arrangement axis determined by surveying, arranging inter-pile tie bars (10) between the enclosure plate piles (1) and the reinforcing anchor piles (9) on the same side, excavating a pipeline arrangement groove (11) between the two rows of enclosure plate piles (1), arranging a ballast air bag (12) at the bottom of the pipeline arrangement groove (11), and filling an air bag filling body (13) into the ballast air bag (12) through an external ballast pump body;
fourthly, arranging the first inner supporting beam and the second inner supporting beam:
arranging two rows of connecting plate positioning grooves (14) on the inner sides of two rows of fender sheet piles (1), arranging a second inner supporting beam (15) and a first inner supporting beam (16) between the two rows of connecting plate positioning grooves (14) which are mirror images of each other left and right, arranging a supporting beam control body (17) between the second inner supporting beam (15) and the first inner supporting beam (16), and arranging a supporting hanging beam (18) on the lower surface of the first inner supporting beam (16) along the longitudinal direction of the pipeline arrangement groove (11);
step five, sliding and hoisting the pipeline:
the method comprises the following steps that a pipe moving hanger (19) is installed at the bottom of a first inner supporting beam (16), wherein the upper portion of the pipe moving hanger (19) is connected with a supporting hanging beam (18) through a pipe moving roller (20), the side face of the pipe moving hanger (19) is connected with external rolling and pulling equipment through a pipe moving inhaul cable (25), the pipe moving hanger (19) comprises a pipe falling control body (21), a sling side plate (22) and a flexible sling (23) which are sequentially connected from top to bottom, a plurality of slurry filling bags (24) are arranged in the longitudinal direction of a pipeline arrangement groove (11), a pipeline (2) is firstly hung on the flexible sling (23) through the external hoisting equipment, then the pipeline (2) is moved to a set position along the supporting hanging beam (18) through the pipe moving inhaul cable (25), and then the pipeline (2) falls to the bottom of the pipeline arrangement groove (11) through the pipe falling control body (21);
step six, stably positioning the pipeline:
discharging an air bag filling body (13) in the ballast air bag (12), taking out the ballast air bag (12), arranging a pipe top positioning body (26) between the enclosure sheet pile (1) and the pipeline (2), and limiting the position of the pipeline (2) by an arc plate positioning bolt (27) and a side pressure arc plate (28) of the pipe top positioning body (26);
seventhly, construction of a filler around the pipe:
the upper part of a box girder connecting rib (32) is connected with a supporting hanging beam (18) through a box moving roller (33), a shifting inhaul cable (39) is arranged on the side surface of the box girder connecting rib (32), the position of a storage box (34) is controlled through the shifting inhaul cable (39), the lower part of the box girder connecting rib (32) is connected with the storage box (34), a loose accumulation body (36) is filled in the storage box (34), and the loose accumulation body (36) in the storage box (34) is filled to the periphery of a pipeline (2) so as to form a periphery filling body (38);
step eight, constructing the gap filling grouting body and the light sealing layer:
after the construction of the filling body (38) around the pipe is finished, the constraint of the pipeline (2) is removed, and grouting is carried out on the soil body (40) around the pipe through a grouting pipe to form a gap filling grouting body (41).
2. The construction method of the slotted pipe laying in the soft soil area according to the claim 1, characterized in that in the second step, the method further comprises: the bottom end of the enclosure sheet pile (1) is provided with a immersed tube pressing plate (6), and a immersed tube convex tenon (7) on the lower surface of the immersed tube pressing plate (6) is connected with a convex tenon connecting groove (8) on the upper surface of the pressing plate connecting plate (4).
3. The construction method of the slotted pipe laying in the soft soil area according to the claim 1, characterized in that in the third step, the method further comprises: and supporting beam connecting plates (42) are arranged at the two ends of the first inner supporting beam (16) and the second inner supporting beam (15), and the supporting beam connecting plates (42) are connected with the connecting plate positioning grooves (14).
4. A soft soil area slotting buried pipe construction method according to claim 1, characterized in that the first inner supporting beam (16) is in an upward convex arch shape, the second connecting beam is in a downward convex arch shape, and the supporting beam position control body is connected to the middle parts of the first inner supporting beam (16) and the second connecting beam.
5. A soft soil area slotting and pipe burying construction method according to claim 1, characterized in that two rows of ballast air bags (12) are provided, and each row of ballast air bags (12) is respectively abutted against the inner side of the fender sheet pile (1).
6. A soft soil area slotting and pipe burying construction method as claimed in claim 4, wherein a hydraulic jack is adopted as the supporting beam control body (17), and two ends of the hydraulic jack are fixedly connected with the second inner supporting beam (15) and the first inner supporting beam (16) respectively.
7. The construction method of the slotted pipe laying in the soft soil area according to the claim 1, characterized in that in the sixth step, the method further comprises: arranging a plurality of grouting bags (24) along the longitudinal direction of the pipeline layout groove (11), arranging a bag grouting pipe (29) and a bag exhaust pipe (31) on each grouting bag (24), grouting and fixing a positioning body (30) through the internal pressure of the bag grouting pipe (29) by the grouting bags (24) under the condition that the pipeline (2) falls to the bottom of the pipeline layout groove (11), and exhausting air in the grouting bags (24) through the bag exhaust pipe (31) to fill the gaps at the bottoms of the pipeline (2) and the pipeline layout groove (11) with the grouting bags (24); in the grouting process of the grout positioning body (30), the length of the arc plate positioning bolt (27) is adjusted, and the pressure of the grout positioning body (30) is controlled, so that the longitudinal gradient of the pipeline (2) meets the requirement.
8. The construction method of the slotted pipe laying in the soft soil area according to the claim 1, characterized in that in the seventh step, the method further comprises: the top of the storage box (34) is provided with a feeding hole (35), the top of the storage box (34) is provided with two discharge ports (37), the discharge ports (37) are distributed on two sides of the pipeline (2) from left to right, and the two discharge ports (37) of the storage box (34) are used for synchronously constructing the pipe periphery filling bodies (38) on two sides of the pipeline (2).
9. A soft soil area slotted pipe burying construction method according to claim 1, wherein in step eight, after the construction of the filler (38) around the pipe is completed, the releasing of the constraint of the pipeline (2) comprises: after the filling bodies (38) around the pipe are filled to the elevation of the pipe top positioning body (26), the constraint of the pipe top positioning body (26) on the pipeline (2) is removed, and when the filling bodies (38) around the pipe are filled to the bottom elevation of the storage tank (34), the second inner supporting beam (15) and the first inner supporting beam (16) are taken out in sequence; after the pouring of the pipe periphery filling body (38) is completed, pile-to-pile tie bars (10) between the enclosure sheet pile (1) and the reinforcing anchor pile (9) are removed, and then the enclosure sheet pile and the reinforcing anchor pile (9) are pulled out.
10. A pipeline sliding hoisting structure, characterized in that the structure is constructed according to the construction method of the slotted pipe laying in the soft soil area of any claim 1 to 9.
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2905146A1 (en) * | 1979-02-10 | 1980-08-21 | Rolf Stahn | Buried pipe and conduit laying - using concrete around pipe on trench bottom and fill of bentonite or stopper suspension |
| CN1326034A (en) * | 2000-05-31 | 2001-12-12 | 北京振冲工程股份有限公司 | Piling machine with multiple heads and deep stiring for one-pass wall construction and its operating method |
| WO2011088486A1 (en) * | 2010-01-21 | 2011-07-28 | Jan Michael Pichler | Method and device for introducing a pipe for optical cables into a solid laying foundation |
| CN106088086A (en) * | 2016-08-08 | 2016-11-09 | 中国电建集团贵阳勘测设计研究院有限公司 | The pile body post-mud-jacking bored pile of karst area deep foundation pit fender post supporting |
| CN206562621U (en) * | 2017-03-14 | 2017-10-17 | 安徽省公路桥梁工程有限公司 | City planting ductwork fluting pipe laying structure |
| CN107504262A (en) * | 2017-08-07 | 2017-12-22 | 上海公路桥梁（集团）有限公司 | River push pipe pipeline is got in a kind of soft soil layer and moves back pipe construction method |
| CN108797598A (en) * | 2018-07-09 | 2018-11-13 | 江苏地基工程有限公司 | The construction technology of pre-loaded support struts in a kind of deep basal pit |
| CN110185119A (en) * | 2019-06-03 | 2019-08-30 | 安徽省新路建设工程集团有限责任公司 | Rain sewage pipe Combined type interface and construction method |
| CN112177022A (en) * | 2020-10-13 | 2021-01-05 | 广州市水电建设工程有限公司 | Construction method of prefabricated socket joint type interface pipeline |
-
2021
- 2021-09-09 CN CN202111057471.2A patent/CN113700935B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2905146A1 (en) * | 1979-02-10 | 1980-08-21 | Rolf Stahn | Buried pipe and conduit laying - using concrete around pipe on trench bottom and fill of bentonite or stopper suspension |
| CN1326034A (en) * | 2000-05-31 | 2001-12-12 | 北京振冲工程股份有限公司 | Piling machine with multiple heads and deep stiring for one-pass wall construction and its operating method |
| WO2011088486A1 (en) * | 2010-01-21 | 2011-07-28 | Jan Michael Pichler | Method and device for introducing a pipe for optical cables into a solid laying foundation |
| CN106088086A (en) * | 2016-08-08 | 2016-11-09 | 中国电建集团贵阳勘测设计研究院有限公司 | The pile body post-mud-jacking bored pile of karst area deep foundation pit fender post supporting |
| CN206562621U (en) * | 2017-03-14 | 2017-10-17 | 安徽省公路桥梁工程有限公司 | City planting ductwork fluting pipe laying structure |
| CN107504262A (en) * | 2017-08-07 | 2017-12-22 | 上海公路桥梁（集团）有限公司 | River push pipe pipeline is got in a kind of soft soil layer and moves back pipe construction method |
| CN108797598A (en) * | 2018-07-09 | 2018-11-13 | 江苏地基工程有限公司 | The construction technology of pre-loaded support struts in a kind of deep basal pit |
| CN110185119A (en) * | 2019-06-03 | 2019-08-30 | 安徽省新路建设工程集团有限责任公司 | Rain sewage pipe Combined type interface and construction method |
| CN112177022A (en) * | 2020-10-13 | 2021-01-05 | 广州市水电建设工程有限公司 | Construction method of prefabricated socket joint type interface pipeline |
Non-Patent Citations (1)
| Title |
|---|
| 魏纲: "顶管法与开槽埋管法经济性比较分析", 《供水技术》 * |
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