CN115075287B - Disassembly-free prefabricated pipeline foundation and construction method thereof - Google Patents
Disassembly-free prefabricated pipeline foundation and construction method thereof Download PDFInfo
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- CN115075287B CN115075287B CN202210685772.8A CN202210685772A CN115075287B CN 115075287 B CN115075287 B CN 115075287B CN 202210685772 A CN202210685772 A CN 202210685772A CN 115075287 B CN115075287 B CN 115075287B
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- 238000010276 construction Methods 0.000 title claims abstract description 28
- 239000004567 concrete Substances 0.000 claims abstract description 56
- 238000009434 installation Methods 0.000 claims abstract description 12
- 230000001681 protective effect Effects 0.000 claims description 40
- 238000011065 in-situ storage Methods 0.000 claims description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 239000002023 wood Substances 0.000 claims description 9
- 238000010079 rubber tapping Methods 0.000 claims description 7
- 241000282376 Panthera tigris Species 0.000 claims description 6
- 238000013461 design Methods 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 241001669679 Eleotris Species 0.000 description 6
- 238000005096 rolling process Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/46—Foundations for supply conduits or other canals
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/06—Methods of, or installations for, laying sewer pipes
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- Civil Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Sewage (AREA)
Abstract
The invention discloses a disassembly-free prefabricated pipeline foundation and a construction method thereof, comprising the following steps: the cushion layer baffles are symmetrically placed in the pipeline foundation pit, and the distance between the cushion layer baffles is larger than the diameter of the pipeline; the cast-in-place concrete cushion layer is arranged between the cushion layer baffles which are symmetrically arranged and is poured into a whole with the cushion layer baffles, and the height of the cast-in-place concrete cushion layer is smaller than or equal to the total height of the cushion layer baffles; the pipe pillow is placed above the cushion baffle plate, and the outer side face of the pipe pillow and the outer side face of the cushion baffle plate are on the same plane; the cushion baffle and the pipe pillow are provided with an upper-lower mutual matching connection device. The invention can be directly assembled on site without supporting a template of a cushion layer, thereby solving the problems of back and forth assembly, disassembly and transportation of the template; and secondly, the pipeline foundation and the pipeline installation can be synchronously laid, and the construction period is greatly shortened.
Description
Technical Field
The invention relates to the technical field of pipeline construction, in particular to a disassembly-free prefabricated pipeline foundation and a construction method thereof.
Background
Along with the rapid development of social economy and the continuous perfection of urban construction in China, more and more municipal construction projects are built, wherein pipeline engineering is an indispensable part of urban construction, and plays a great role in improving the living standard of people. The pipe foundation is an essential important component in the pipe construction process, and in China, the pipe diameters of a drain pipe and a blow-down pipe are 0.2-2 m, wherein the maximum pipe diameter can reach 3 m, the minimum pipe diameter can reach 0.1m, and the materials are mainly reinforced concrete and PVC pipes. Before the pipeline is buried, a C15 plain concrete cushion layer or a broken stone cushion layer with the thickness of 200-300mm and the thickness of 100mm is paved at the bottom of a pipe ditch meeting the design requirement, after the cushion layer strength meets the installation requirement, reinforcing steel bars are bound on the cushion layer, a template is installed, a concrete foundation is poured, the template is removed after the maintenance is carried out until the strength meets the requirement, and finally the pipeline is installed. The construction mode prolongs the pipeline installation period, wastes manpower and material resources, and particularly in the aspect of assembling and disassembling the templates, workers need to assemble and then disassemble the templates and carry the templates back and forth, so that the manpower cost is greatly increased; in addition, due to different engineering geology conditions, soft soil foundations, groundwater or other reasons usually lead to the need of precipitation treatment of the pipe ditches, and the danger of flat foundation construction is high; importantly, the traditional construction method is easy to lead the stress of the pipeline to be uneven, and then the situation that the drainage pipeline is broken and the joint is broken after long-term use can occur.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a disassembly-free prefabricated pipeline foundation and a construction method thereof, and as the cushion baffle and the pipe pillow are prefabricated members, the prefabricated members can be directly assembled on site without supporting a template of the cushion, thereby solving the problems of back and forth disassembly and transportation of the template; secondly, laying a pipeline foundation and installing pipelines can be synchronously carried out, so that the construction period is greatly shortened; in addition, the cushion baffle and the pipe pillow can meet the design requirements of two pipelines with different types, the thickness of the cushion is not required to be calculated, and the cushion can be directly poured.
In order to achieve the above purpose, the present invention provides the following technical solutions:
A disassembly-free prefabricated pipe foundation comprising:
The cushion layer baffle is symmetrically placed in a pipeline foundation pit, the distance between the cushion layer baffle and the pipeline is larger than the diameter of the pipeline, the cushion layer baffle comprises a first cushion layer connecting plate, a second cushion layer connecting plate perpendicular to the first cushion layer connecting plate and a first bevel edge rib plate block arranged on the inner side of a right angle, and the first cushion layer connecting plate, the second cushion layer connecting plate and the first bevel edge rib plate block are integrally formed;
the cast-in-place concrete cushion layer is arranged between the cushion layer baffles which are symmetrically arranged and is poured into a whole with the cushion layer baffles, and the height of the cast-in-place concrete cushion layer is smaller than or equal to the total height of the cushion layer baffles;
The pipe pillow is placed above the cushion baffle, the outer side face of the pipe pillow and the outer side face of the cushion baffle are on the same plane, the placement direction of the pipe pillow is consistent with that of the cushion baffle, the pipe pillow comprises a first pipe pillow connecting plate, a second pipe pillow connecting plate perpendicular to the first pipe pillow connecting plate and a second hypotenuse rib plate arranged on the inner side of the right angle, and the first pipe pillow connecting plate, the second pipe pillow connecting plate and the second hypotenuse rib plate are integrally formed;
The cushion baffle and the pipe pillow are prefabricated members, and the cushion baffle and the pipe pillow are provided with connecting devices which are matched with each other up and down.
Further, the longitudinal sections of the cushion baffle and the pipe pillow are L-shaped, and the size of the pipe pillow is larger than that of the cushion baffle.
Further, the pipe pillow is provided with a mounting fixing piece and a pipeline positioning device;
The installation fixing piece comprises fixing through holes and pin cone plugs for plugging the fixing through holes, the fixing through holes are respectively formed in a first pipe pillow connecting plate and a second pipe pillow connecting plate of the pipe pillow, the number of the fixing through holes in the first pipe pillow connecting plate is the same as that of the fixing through holes in the second pipe pillow connecting plate, at least 2 fixing through holes are formed in the second pipe pillow connecting plate, the center points of the fixing through holes on the same horizontal plane are on the same straight line, reinforcing steel bar pull rings are pre-buried on the pin cone plugs, the pin cone plugs are convenient to assemble and disassemble, the number of the pin cone plugs is half of the total number of the fixing through holes, and the pin cone plugs are concrete structural members;
The pipeline positioning device comprises a rectangular slide rod, a slide piece and a U-shaped protective cover, wherein the slide piece is fixedly connected with the rectangular slide rod through a first bolt and a first nut, the slide piece is installed at a proper position according to site requirements, the U-shaped protective cover is fixedly connected with the rectangular slide rod through a second bolt and a second nut, the U-shaped protective cover is used for protecting the rectangular slide rod, at least 1 slide piece is arranged, 1U-shaped protective cover is arranged on the U-shaped protective cover, 2 rectangular slide rods are respectively embedded in U-shaped grooves of a first pipe pillow connecting plate and U-shaped grooves of a second pipe pillow connecting plate, protective cover installation through holes are respectively arranged at two ends of the rectangular slide rod, a plurality of slide piece fixing through holes are arranged on the rectangular slide rod and are located between the two protective cover installation through holes and are uniformly arranged along the length direction of the rectangular slide rod, the slide piece comprises a U-shaped slide block, a connecting rod and a limiting piece, two ends of the connecting rod are connected with each other through threads, the U-shaped slide block and the limiting piece are respectively embedded in U-shaped groove of the first pipe pillow connecting plate, the U-shaped protective cover is provided with the same diameter as the U-shaped protective cover, the diameter of the U-shaped protective cover is equal to the diameter of the U-shaped protective cover, and the diameter is equal to the diameter of the U-shaped protective cover and the U-shaped protective cover is equal to the diameter The slider and the U-shaped protective cover are both steel structural members.
Further, the connecting rod is adjustable length, the connecting rod includes interior pole and outer pole, interior pole is entity pole and both ends all are equipped with the external screw thread, the one end of outer pole is equipped with and is used for placing interior pole but not runs through the cavity that has the internal screw thread of outer pole, the other end of outer pole is equipped with the external screw thread.
Further, the limiting piece is a tiger mouth limiting clamp or a curved wedge, the opening width of the tiger mouth limiting clamp is larger than or equal to the width of a spigot-and-socket pipe joint of the pipeline, and the curved radian of the curved wedge is equal to the circular radian of the pipeline.
Further, the connecting device is an L-shaped groove or a U-shaped positioning piece, and the L-shaped groove is respectively arranged on the upper side of the first cushion connecting plate of the cushion baffle, the right side of the second cushion connecting plate of the cushion baffle and below the right angle of the pipe pillow, so that the cushion baffle and the pipe pillow can be quickly positioned and connected; the two ends of the U-shaped locating piece are conical, the U-shaped locating piece is a steel structural piece, and the two ends of the U-shaped locating piece are respectively inserted into the side face of the cushion layer baffle and the side face of the pipe pillow, so that the cushion layer baffle is conveniently fixedly connected with the pipe pillow up and down.
Further, the height of the first cushion connecting plate is greater than the height of the second cushion connecting plate, the height of the first pipe pillow connecting plate is greater than the height of the second pipe pillow connecting plate, the first pipe pillow connecting plate and the second pipe pillow connecting plate are respectively used for fixing pipelines of two different specifications, the height of the first pipe pillow connecting plate or the second pipe pillow connecting plate is greater than or equal to the radius of the pipeline, and the height of the first cushion connecting plate, the second cushion connecting plate, the first pipe pillow connecting plate and the second pipe pillow connecting plate are determined by the size of the pipeline.
Further, the connection between two adjacent cushion baffles and the connection between two adjacent pipe pillows are all connected through a rectangular connecting plate, a plurality of third through holes are formed in the rectangular connecting plate, the rectangular connecting plate is fixed on the cushion baffles or the pipe pillows through self-tapping screws, the length of the rectangular connecting plate changes along with the sizes of the cushion baffles or the pipe pillows, and the rectangular connecting plate is a steel structural member.
A construction method of a disassembly-free prefabricated pipeline foundation comprises the following steps:
S1: excavating a pipeline foundation pit, symmetrically placing a group of cushion layer baffles into the pipeline foundation pit, selecting a proper cushion layer connecting plate as a side baffle of a cast-in-place concrete cushion layer according to the design height of the cast-in-place concrete cushion layer, adjusting the distance between the cushion layer baffles which are symmetrically placed according to the diameter of the pipeline, and placing the cushion layer baffles in sections according to the total length of a paved pipeline;
S2: connecting adjacent cushion baffles by using rectangular connecting plates, fixedly connecting the adjacent cushion baffles by using tapping screws, blocking the front end and the rear end of the cushion baffles which are placed for the first time in a segmented manner by using wood plates, and pouring cast-in-place concrete cushions;
S3: after the cast-in-situ concrete cushion is completely solidified, removing the wood plate, then placing the next section of cushion baffle along the direction of the placed cushion baffle, fixedly connecting the next section of cushion baffle by using a rectangular connecting plate, blocking the tail part of the next section of cushion baffle which is just placed by using the wood plate, and pouring the next section of cast-in-situ concrete cushion;
s4: the step S3 is executed, meanwhile, the pipe pillow is placed and fixed above a previous section of cushion baffle, the adjacent pipe pillow is fixed by a rectangular connecting plate, the pipe pillow is fixed on the cured cast-in-place concrete cushion by foundation bolts, and the pipeline is placed and spliced;
S5: selecting a proper limiting part according to the shape and the diameter of a pipeline, assembling a sliding part, fixing the sliding part on a rectangular sliding rod which is pre-buried on a pipe pillow through a first bolt and a first nut, and adjusting the length of a connecting rod to enable the limiting part to be blocked below the side of the pipeline;
S6: repeating the steps S3-S5 until the whole pipeline foundation is paved and the poured cast-in-situ concrete cushion is completely solidified;
S7: and pouring concrete between the pipe pillow and the pipeline until the upper surface of the concrete and the upper surface of the first pipe pillow connecting plate or the second pipe pillow connecting plate of the pipe pillow are positioned on the same horizontal plane, and finishing the whole engineering construction.
Further, in the step S4, the placement method of the pipe pillow is selected according to the specifications of the pipe, the large-size pipe selects the first pipe pillow connecting plate of the pipe pillow as a baffle plate on the side surface of the pipe, the fixing through hole on the first pipe pillow connecting plate is used as a hoisting hole, and after hoisting is completed, the fixing through hole is plugged by a pin cone plug; otherwise, a second pipe pillow connecting plate of the pipe pillow is selected as a baffle plate on the side surface of the pipeline, a fixing through hole on the second pipe pillow connecting plate is used as a hoisting hole, and after hoisting is completed, a pin cone plug is used for plugging the fixing through hole; the U-shaped protective cover is installed and fixed on the first pipe pillow connecting plate or the second pipe pillow connecting plate serving as a pipeline side baffle.
Compared with the prior art, the invention has the following beneficial effects:
1. In the invention, the cushion baffle prefabricated in the factory in advance is adopted as the template for paving the foundation cushion of the pipeline, the cast-in-place concrete cushion and the cushion baffle are integrated, the cushion baffle is not required to be dismantled, and the construction flow of back and forth disassembly and transportation of the cushion template is omitted; in addition, the heights of the first cushion connecting plate and the second cushion connecting plate in the cushion baffle are different, which cushion connecting plate is used as a side baffle of the cast-in-place concrete cushion according to the design requirement of the cushion height and the specification of a pipeline to be laid, and meanwhile, the height of the cushion connecting plate used as the side baffle of the cast-in-place concrete cushion also determines the thickness and the bearing capacity of the cast-in-place concrete cushion;
2. The cushion baffle and the pipe pillow are provided with the connecting devices, so that the pipe pillow can be accurately placed, and the cushion baffle and the pipe pillow are prevented from being separated from each other and the concrete overflows when the concrete is poured; the heights of the first pipe pillow connecting plate and the second pipe pillow connecting plate in the pipe pillow are different, which pipe pillow connecting plate is used as a pipeline and a side baffle for pouring concrete outside the pipeline is selected according to the specification of the pipeline to be paved, the height of the pipe pillow connecting plate used as the side baffle is larger than or equal to the radius of the pipeline, and the upper surface of the poured concrete and the upper surface of the pipe pillow connecting plate used as the side baffle are on the same horizontal plane, so that the pipeline is well protected, and the service cycle of the pipeline is prolonged;
3. The mounting and fixing holes on the pipe sleeper can be used for fixing the pipe sleeper and the solidified cast-in-situ concrete cushion, and can also be used for hanging the hanging holes of the pipe sleeper; when the pipe sleeper is used as a hoisting hole, after the pipe sleeper is hoisted, the pipe sleeper is plugged by a pin cone plug, so that concrete loss caused by concrete pouring is avoided;
4. According to the invention, the length of the connecting rod in the pipeline positioning device can be adjusted according to the distance between the side surface of the first pipeline connecting plate or the second pipeline connecting plate which is placed and parallel to the cast-in-situ concrete cushion layer and the outer wall of the pipeline, so that the limiting piece on the connecting rod is propped against the side lower part of the pipeline, and the two side surfaces of the pipeline are limited by the limiting piece, thereby avoiding the pipeline from rolling on the solidified cast-in-situ concrete cushion layer and shifting when concrete is poured; secondly, the limiting piece in the pipeline positioning device can be selected according to the shape of the pipeline, if the pipeline is provided with a spigot-and-socket pipe joint, a tiger-mouth limiting clamp is selected, if the pipeline is not provided with the spigot-and-socket pipe joint, a curved wedge block is selected as the limiting piece, and the two limiting pieces are replaceable, so that the use requirements of pipelines with different shapes are met; in addition, the U-shaped protective cover is placed on the second pipeline connecting plate or the first pipeline connecting plate which is perpendicular to the cast-in-situ concrete cushion layer, and the protective cover also plays a role in filling U-shaped grooves on the second pipeline connecting plate or the first pipeline connecting plate while protecting the sliding rods.
Drawings
FIG. 1 is a schematic view of an embodiment of the present invention after construction;
FIG. 2 is a schematic illustration of two connection of a cushion baffle to a tube pillow and a structural split;
FIG. 3 is a schematic view of the overall installation structure of the tube pillow of the present invention and a structural exploded view;
FIG. 4 is a schematic view of a limiting member according to the present invention;
FIG. 5 is a schematic view of the structure of the connecting rod of the present invention;
FIG. 6 is a schematic view of a rectangular connecting plate according to the present invention;
FIG. 7 is a construction flow chart of a first embodiment of the invention;
FIG. 8 is a schematic diagram of the construction of the second embodiment of the present invention;
Fig. 9 is a construction flow chart of a second embodiment of the present invention.
In the figure: 1-a cushion baffle; 2-casting a concrete cushion layer; 3-tube pillow; 4-connecting means; 5-mounting a fixing piece; 6-a pipeline positioning device; 7-a steel bar pull ring; 8-a first bolt; 9-a first nut; 10-a second bolt; 11-a second nut; 12-rectangular connecting plates; 13-self-tapping screws; 14-anchor bolts; 15-small stones; 101-a first cushion connecting plate; 102-a second cushion connecting plate; 103-a first hypotenuse rib plate; 301-a first tube pillow connecting plate; 302-a second tube pillow connecting plate; 303-a second hypotenuse rib plate; 304-U-shaped groove; 401-L-shaped grooves; 402-U-shaped positioning piece; 501-fixing through holes; 502-a pin cone plug; 601-rectangular slide bar; 602-a slider; 603-U-shaped protective cover; 604-protective cover mounting through holes; 605-slide securing through hole; 6021-U-shaped slide block; 6022-connecting rod; 6023-limiting piece; 60211-first through holes; 6041-second via holes; 60221-inner rod; 60222-outer rod; 60231-tiger mouth limiting clamps; 60232-curved wedges; 121-third through holes.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the terms "inner", "outer", "side", "upper", "lower", "both ends", "lengthwise", "vertical", "height", "same horizontal plane" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "previous segment," "next segment," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Embodiment one:
As shown in fig. 1-6, a disassembly-free prefabricated pipe foundation comprising: the cushion baffle plate 1, wherein the cushion baffle plate 1 is symmetrically placed in a foundation pit of a pipeline, the distance between the cushion baffle plates 1 is larger than the diameter of the pipeline, the cushion baffle plate 1 comprises a first cushion connecting plate 101, a second cushion connecting plate 102 perpendicular to the first cushion connecting plate 101 and a first bevel rib plate block 103 arranged on the inner side of a right angle, and the first cushion connecting plate 101, the second cushion connecting plate 102 and the first bevel rib plate block 103 are integrally formed;
The cast-in-place concrete cushion layer 2 is arranged between the cushion baffle plates 1 which are symmetrically placed and is integrally poured with the cushion baffle plates 1, and the height of the cast-in-place concrete cushion layer 2 is smaller than or equal to the total height of the cushion baffle plates 1;
The pipe pillow 3 is placed above the cushion baffle 1, the outer side face of the pipe pillow 3 and the outer side face of the cushion baffle 1 are on the same plane, the placement direction of the pipe pillow 3 is consistent with the placement direction of the cushion baffle 1, the pipe pillow 3 comprises a first pipe pillow connecting plate 301, a second pipe pillow connecting plate 302 perpendicular to the first pipe pillow connecting plate 301 and a second bevel rib plate 303 arranged on the right-angle inner side, and the first pipe pillow connecting plate 301, the second pipe pillow connecting plate 302 and the second bevel rib plate 303 are integrally formed;
the cushion baffle 1 and the pipe pillow 3 are prefabricated members, and the cushion baffle 1 and the pipe pillow are provided with connecting devices 4 which are matched with each other up and down.
The longitudinal sections of the cushion baffle 1 and the pipe pillow 3 are L-shaped, and the size of the pipe pillow 3 is larger than that of the cushion baffle 1.
The pipe pillow 3 is provided with a mounting fixing piece 5 and a pipeline positioning device 6;
The installation fixing piece 5 comprises fixing through holes 501 and pin cone plugs 502 for plugging the fixing through holes 501, the fixing through holes 501 are respectively formed in a first pipe pillow connecting plate 301 and a second pipe pillow connecting plate 302 of the pipe pillow 3, the number of the fixing through holes 501 on the first pipe pillow connecting plate 301 is the same as that of the fixing through holes 501 on the second pipe pillow connecting plate 302, at least 2 fixing through holes 501 are formed in the same horizontal plane, the center points of the fixing through holes 501 on the same horizontal plane are on the same straight line, reinforcing steel bar pull rings 7 are pre-buried on the pin cone plugs 502, the installation fixing and the dismounting are convenient, the number of the pin cone plugs 502 is half of the total number of the fixing through holes 501, and the pin cone plugs 502 are concrete structural members;
The pipeline positioning device 6 comprises rectangular slide bars 601, slide pieces 602 and U-shaped protective covers 603, wherein the slide pieces 602 are fixedly connected with the rectangular slide bars 601 through first bolts 8 and first nuts 9, the slide pieces 602 are installed at proper positions according to site requirements, the U-shaped protective covers 603 are fixedly connected with the rectangular slide bars 601 through second bolts 10 and second nuts 11, the U-shaped protective covers 603 are used for protecting the rectangular slide bars 601, at least 1 slide piece 602 is arranged, 1U-shaped protective cover 603 is arranged, 2 rectangular slide bars 601 are respectively embedded in the U-shaped grooves 304 of the first pipe pillow connecting plate 301 and the U-shaped grooves 304 of the second pipe pillow connecting plate 302, protective cover mounting through holes 604 are respectively arranged at two ends of the rectangular slide bars 601, a plurality of slide piece fixing through holes 605 are arranged between the two protective cover mounting through holes 604 and are uniformly arranged along the length direction of the rectangular slide bars 601, the slide 602 comprises a U-shaped slide 6021, a connecting rod 6022 and a limiting piece 6023, wherein a first through hole 60211 is arranged on the U-shaped slide 6021, the two ends of the connecting rod 6022 are connected with the U-shaped slide 6021 and the limiting piece 6023 through threads, the two ends of the connecting rod 6022 are provided with external threads, the U-shaped slide 6021 and the limiting piece 6023 are provided with internal threads, the two ends of the U-shaped protective cover 603 are provided with a second through hole 6041, the length of the U-shaped protective cover 603 is equal to the length of the U-shaped groove 304, the diameters of the slide fixing through hole 605 and the first through hole 60211 are equal, the diameters of the protective cover mounting through hole 604 and the second through hole 6041 are equal, the diameter of the protective cover mounting through hole 604 is larger than the diameter of the slide fixing through hole 605, the center point of the slider fixing through hole 605 and the center point of the protection cover mounting through hole 604 are on the same straight line, and the rectangular slide bar 601, the slider 602 and the U-shaped protection cover 603 are all steel structural members.
The connecting rod 6022 is adjustable in length, the connecting rod 6022 comprises an inner rod 60221 and an outer rod 60222, the inner rod 60221 is a solid rod, both ends of the inner rod are provided with external threads, one end of the outer rod 60222 is provided with a cavity with internal threads for placing the inner rod 60221 but not penetrating through the outer rod 60222, and the other end of the outer rod 60222 is provided with external threads.
The limiting piece 6023 is a tiger mouth limiting clamp 60231 or a curved wedge 60232, the opening width of the tiger mouth limiting clamp 60231 is larger than or equal to the width of a spigot-and-socket pipe joint of the pipeline, and the curved radian of the curved wedge 60232 is equal to the circular radian of the pipeline.
The connecting device 4 is an L-shaped groove 401 or a U-shaped positioning piece 402, the L-shaped groove 401 is respectively arranged on the upper side of the first cushion connecting plate 101 of the cushion baffle 1 and the right side of the second cushion connecting plate 102 of the cushion baffle 1 and below the right angle of the pipe pillow 3, so that the cushion baffle 1 and the pipe pillow 3 can be quickly positioned and connected; the two ends of the U-shaped positioning piece 402 are conical, the U-shaped positioning piece 402 is a steel structural piece, and the two ends of the U-shaped positioning piece 402 are respectively inserted into the side face of the cushion baffle 1 and the side face of the pipe pillow 3, so that the cushion baffle 1 and the pipe pillow 3 are conveniently fixedly connected up and down.
The height of the first cushion connecting plate 101 is larger than that of the second cushion connecting plate 102, the height of the first pipe pillow connecting plate 301 is larger than that of the second pipe pillow connecting plate 302, the first pipe pillow connecting plate 301 and the second pipe pillow connecting plate 302 are respectively used for fixing two pipelines with different specifications, the height of the first pipe pillow connecting plate 301 or the second pipe pillow connecting plate 302 is larger than or equal to the radius of the pipeline, and the heights of the first cushion connecting plate 101, the second cushion connecting plate 102, the first pipe pillow connecting plate 301 and the second pipe pillow connecting plate 302 are determined by the sizes of the pipelines.
The connection between two adjacent cushion baffles 1 and the connection between two adjacent pipe pillows 3 are all connected through a rectangular connecting plate 12, a plurality of third through holes 121 are formed in the rectangular connecting plate 12, the rectangular connecting plate 12 is fixed on the cushion baffles 1 or the pipe pillows 3 through self-tapping screws 13, the length of the rectangular connecting plate 12 changes along with the size of the cushion baffles 1 or the pipe pillows 3, and the rectangular connecting plate 12 is a steel structural member.
As shown in fig. 7, the construction method according to the first embodiment includes the following steps:
S1: excavating a pipeline foundation pit, symmetrically placing a group of cushion layer baffles 1 into the pipeline foundation pit, selecting a proper cushion layer connecting plate as a side baffle of the cast-in-place concrete cushion layer 2 according to the design height of the cast-in-place concrete cushion layer 2, adjusting the distance between the cushion layer baffles 1 which are symmetrically placed according to the diameter of the pipeline, and placing the cushion layer baffles 1 in sections according to the total length of a paved pipeline;
S2: connecting adjacent cushion baffles 1 by using rectangular connecting plates 12, fixedly connecting the adjacent cushion baffles 1 by using tapping screws 13, plugging the front end and the rear end of the cushion baffle 1 which are placed for the first time in a segmented manner by using wood plates, and pouring a cast-in-place concrete cushion 2;
S3: after the cast-in-situ concrete cushion 2 is completely solidified, removing the wood plate, then placing the next section of cushion baffle 1 along the direction of the placed cushion baffle 1, fixedly connecting the next section of cushion baffle 1 by using a rectangular connecting plate 12, blocking the tail part of the next section of cushion baffle 1 which is just placed by using the wood plate, and pouring the next section of cast-in-situ concrete cushion 2;
S4: while executing the step S3, placing and fixing the pipe pillow 3 above the previous section of cushion baffle 1, fixing the adjacent pipe pillow by using a rectangular connecting plate 12, fixing the pipe pillow 3 on the cured cast-in-situ concrete cushion 2 by using foundation bolts 14, and placing and splicing pipelines;
S5: selecting a proper limiting piece 6023 according to the shape and the diameter of a pipeline, assembling the sliding piece 602, fixing the sliding piece 602 on a rectangular sliding rod 601 which is pre-buried on the pipe pillow 3 through a first bolt 8 and a first nut 9, and adjusting the length of a connecting rod 6022 so that the limiting piece 6023 is blocked below the side of the pipeline;
S6: repeating the steps S3-S5 until the whole pipeline foundation is paved and the poured cast-in-situ concrete cushion layer 2 is completely solidified;
s7: and pouring concrete between the pipe pillow 3 and the pipeline until the upper surface of the concrete and the upper surface of the first pipe pillow connecting plate 301 or the second pipe pillow connecting plate 302 of the pipe pillow are positioned at the same horizontal plane, and finishing the whole engineering construction.
In the step S4, the placement method of the pipe pillow 3 is selected according to the specifications of the pipe, the large-sized pipe selects the first pipe pillow connecting plate 301 of the pipe pillow 3 as a baffle plate on the side surface of the pipe, the fixing through hole 501 on the first pipe pillow connecting plate 301 is used as a hoisting hole, and after hoisting is completed, the fixing through hole 501 is plugged by the pin cone plug 502; on the contrary, a second pipe pillow connecting plate 302 of the pipe pillow 3 is selected as a baffle plate of the side surface of the pipeline, a fixing through hole 501 on the second pipe pillow connecting plate 302 is used as a hoisting hole, and after hoisting is completed, a pin cone plug 502 is used for plugging the fixing through hole 501; the U-shaped protective cover 603 is installed and fixed on the first pipe pillow connecting plate 301 or the second pipe pillow connecting plate 302 serving as a pipeline side baffle.
Embodiment two:
as shown in fig. 8, unlike the first embodiment, only the mounting fixture 5 is provided on the pipe pillow 3, the pipe positioning device 6 is not provided, and the sides of the first pipe pillow connecting plate 301 and the second pipe pillow connecting plate 302 of the pipe pillow 3 are solid planes.
As shown in fig. 9, the construction method of the second embodiment is different from the construction method of the first embodiment in that in step S4, after the pipes are placed and spliced, small stones 15 are respectively placed under both sides of the pipes for preventing the pipes from rolling, instead of adopting the method of step S5 to prevent the pipes from rolling.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A disassembly-free prefabricated pipe foundation, comprising:
The cushion layer baffle is symmetrically placed in a pipeline foundation pit, the distance between the cushion layer baffle and the pipeline is larger than the diameter of the pipeline, the cushion layer baffle comprises a first cushion layer connecting plate, a second cushion layer connecting plate perpendicular to the first cushion layer connecting plate and a first bevel edge rib plate block arranged on the inner side of a right angle, and the first cushion layer connecting plate, the second cushion layer connecting plate and the first bevel edge rib plate block are integrally formed;
the cast-in-place concrete cushion layer is arranged between the cushion layer baffles which are symmetrically arranged and is poured into a whole with the cushion layer baffles, and the height of the cast-in-place concrete cushion layer is smaller than or equal to the total height of the cushion layer baffles;
The pipe pillow is placed above the cushion baffle, the outer side face of the pipe pillow and the outer side face of the cushion baffle are on the same plane, the placement direction of the pipe pillow is consistent with that of the cushion baffle, the pipe pillow comprises a first pipe pillow connecting plate, a second pipe pillow connecting plate perpendicular to the first pipe pillow connecting plate and a second hypotenuse rib plate arranged on the inner side of the right angle, and the first pipe pillow connecting plate, the second pipe pillow connecting plate and the second hypotenuse rib plate are integrally formed;
The cushion baffle and the pipe pillow are prefabricated members, and connecting devices which are matched up and down are arranged on the cushion baffle and the pipe pillow;
The pipe pillow is provided with a mounting fixing piece and a pipeline positioning device, the mounting fixing piece comprises fixing through holes and pin cone plugs for plugging the fixing through holes, the fixing through holes are respectively formed in a first pipe pillow connecting plate and a second pipe pillow connecting plate of the pipe pillow, the number of the fixing through holes in the first pipe pillow connecting plate is the same as that of the fixing through holes in the second pipe pillow connecting plate, at least 2 fixing through holes are formed in the second pipe pillow connecting plate, the center points of the fixing through holes in the same horizontal plane are in the same straight line, reinforcing steel bar pull rings are pre-buried in the pin cone plugs, the number of the pin cone plugs is half of the total number of the fixing through holes, and the pin cone plugs are concrete structural members;
The pipeline positioning device comprises rectangular slide bars, slide pieces and U-shaped protective covers, wherein the slide pieces are fixedly connected with the rectangular slide bars through first bolts and first nuts, the U-shaped protective covers are fixedly connected with the rectangular slide bars through second bolts and second nuts, at least 1 slide piece is arranged on the U-shaped protective covers, 2 rectangular slide bars are respectively embedded in U-shaped grooves of the first pipe pillow connecting plates and in U-shaped grooves of the second pipe pillow connecting plates, protective cover installation through holes are respectively arranged at two ends of the rectangular slide bars, a plurality of slide piece fixing through holes are formed in the rectangular slide bars and are located between the two protective cover installation through holes and are uniformly arranged along the length direction of the rectangular slide bars, the slide pieces comprise U-shaped slide blocks, connecting rods and limiting pieces, the two ends of each connecting rod are respectively provided with external threads through threaded connection, the U-shaped slide blocks and the limiting pieces are respectively provided with internal threads, the U-shaped slide blocks and the limiting pieces are respectively provided with two U-shaped thread installation through holes, the diameter of the U-shaped slide blocks is equal to the diameter of the U-shaped protective covers, and the diameter of the U-shaped protective covers is equal to the diameter of the rectangular protective covers, and the diameter of the protective covers is equal to the diameter of the rectangular protective covers.
2. The disassembly-free prefabricated pipeline foundation of claim 1, wherein the longitudinal sections of the cushion baffle and the pipe pillow are L-shaped, and the size of the pipe pillow is larger than that of the cushion baffle.
3. The disassembly-free prefabricated pipeline foundation according to claim 1, wherein the connecting rod is adjustable in length, the connecting rod comprises an inner rod and an outer rod, the inner rod is a solid rod, both ends of the inner rod are provided with external threads, one end of the outer rod is provided with a cavity with internal threads for placing the inner rod but not penetrating the outer rod, and the other end of the outer rod is provided with external threads.
4. The disassembly-free prefabricated pipeline foundation according to claim 1, wherein the limiting piece is a tiger mouth limiting clamp or a curved wedge, the opening width of the tiger mouth limiting clamp is larger than or equal to the width of a spigot-and-socket pipe joint of the pipeline, and the curved radian of the curved wedge is equal to the circular radian of the pipeline.
5. The disassembly-free prefabricated pipeline foundation according to claim 1, wherein the connecting device is an L-shaped groove or a U-shaped positioning piece, and the L-shaped groove is respectively arranged on the upper side of the first cushion connecting plate of the cushion baffle plate and the right side of the second cushion connecting plate of the cushion baffle plate and below the right angle position of the pipe pillow; both ends of the U-shaped locating piece are conical, and the U-shaped locating piece is a steel structural piece.
6. The disassembly-free prefabricated pipeline foundation according to claim 1, wherein the first cushion connecting plate is higher than the second cushion connecting plate, the first pipe pillow connecting plate is higher than the second pipe pillow connecting plate, the first pipe pillow connecting plate and the second pipe pillow connecting plate are respectively used for fixing two pipelines with different specifications, the height of the first pipe pillow connecting plate or the second pipe pillow connecting plate is higher than or equal to the radius of the pipeline, and the heights of the first cushion connecting plate, the second cushion connecting plate, the first pipe pillow connecting plate and the second pipe pillow connecting plate are determined by the size of the pipeline.
7. The disassembly-free prefabricated pipeline foundation according to claim 1, wherein the connection between two adjacent cushion baffles and the connection between two adjacent pipe pillows are connected through rectangular connecting plates, a plurality of third through holes are formed in the rectangular connecting plates, the rectangular connecting plates are fixed on the cushion baffles or the pipe pillows through self-tapping screws, the lengths of the rectangular connecting plates change along with the sizes of the cushion baffles or the pipe pillows, and the rectangular connecting plates are steel structural members.
8. The disassembly-free prefabricated pipeline foundation according to claim 1, wherein the construction method comprises the following steps:
S1: excavating a pipeline foundation pit, symmetrically placing a group of cushion layer baffles into the pipeline foundation pit, selecting a proper cushion layer connecting plate as a side baffle of a cast-in-place concrete cushion layer according to the design height of the cast-in-place concrete cushion layer, adjusting the distance between the cushion layer baffles which are symmetrically placed according to the diameter of the pipeline, and placing the cushion layer baffles in sections according to the total length of a paved pipeline;
s2: connecting adjacent cushion baffles by using rectangular connecting plates, fixedly connecting the adjacent cushion baffles by using tapping screws, blocking the front end and the rear end of the cushion baffles which are placed for the first time in a segmented manner by using wood plates, and pouring cast-in-place concrete cushions;
S3: after the cast-in-situ concrete cushion is completely solidified, removing the wood plate, then placing the next section of cushion baffle along the direction of the placed cushion baffle, fixedly connecting the next section of cushion baffle by using a rectangular connecting plate, blocking the tail part of the next section of cushion baffle which is just placed by using the wood plate, and pouring the next section of cast-in-situ concrete cushion;
s4: the step S3 is executed, meanwhile, the pipe pillow is placed and fixed above a previous section of cushion baffle, the adjacent pipe pillow is fixed by a rectangular connecting plate, the pipe pillow is fixed on the cured cast-in-place concrete cushion by foundation bolts, and the pipeline is placed and spliced;
S5: selecting a proper limiting part according to the shape and the diameter of a pipeline, assembling a sliding part, fixing the sliding part on a rectangular sliding rod which is pre-buried on a pipe pillow through a first bolt and a first nut, and adjusting the length of a connecting rod to enable the limiting part to be blocked below the side of the pipeline;
S6: repeating the steps S3-S5 until the whole pipeline foundation is paved and the poured cast-in-situ concrete cushion is completely solidified;
S7: and pouring concrete between the pipe pillow and the pipeline until the upper surface of the concrete and the upper surface of the first pipe pillow connecting plate or the second pipe pillow connecting plate of the pipe pillow are positioned on the same horizontal plane, and finishing the whole engineering construction.
9. The disassembly-free prefabricated pipeline foundation according to claim 8, wherein in the step S4, the placement method of the pipe pillow is selected according to the specification of the pipeline, the large-size pipeline selects the first pipe pillow connecting plate of the pipe pillow as a baffle plate on the side surface of the pipeline, the fixing through hole on the first pipe pillow connecting plate is used as a lifting hole, and the fixing through hole is plugged by a pin cone plug after the lifting is completed; otherwise, a second pipe pillow connecting plate of the pipe pillow is selected as a baffle plate on the side surface of the pipeline, a fixing through hole on the second pipe pillow connecting plate is used as a hoisting hole, and after hoisting is completed, a pin cone plug is used for plugging the fixing through hole; the U-shaped protective cover is installed and fixed on the first pipe pillow connecting plate or the second pipe pillow connecting plate serving as a pipeline side baffle.
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| JPH09203053A (en) * | 1996-01-30 | 1997-08-05 | Ube Ind Ltd | Precast reinforced concrete foundation structure |
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| CN105089069A (en) * | 2015-08-28 | 2015-11-25 | 苏州同尚工程设计咨询有限公司 | Pipeline foundation and construction method thereof |
| CN109537705A (en) * | 2018-09-30 | 2019-03-29 | 中交上海航道局有限公司 | A kind of drainage pipeline positioning device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH09203053A (en) * | 1996-01-30 | 1997-08-05 | Ube Ind Ltd | Precast reinforced concrete foundation structure |
| KR20020017008A (en) * | 2000-08-28 | 2002-03-07 | (주)한빛하이테크엔지니어링 | The duct construction method with the duct supporting equipment and The duct supporting equipment |
| JP2013057382A (en) * | 2011-09-09 | 2013-03-28 | Kurimoto Ltd | Pipe pillow bearing plate |
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| CN115075287A (en) | 2022-09-20 |
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