CN113944185A - Large-scale municipal pipeline in-situ protection device and construction method thereof - Google Patents
Large-scale municipal pipeline in-situ protection device and construction method thereof Download PDFInfo
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- CN113944185A CN113944185A CN202111309592.1A CN202111309592A CN113944185A CN 113944185 A CN113944185 A CN 113944185A CN 202111309592 A CN202111309592 A CN 202111309592A CN 113944185 A CN113944185 A CN 113944185A
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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
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G9/00—Installations of electric cables or lines in or on the ground or water
- H02G9/06—Installations of electric cables or lines in or on the ground or water in underground tubes or conduits; Tubes or conduits therefor
Abstract
The application relates to a large-scale municipal pipeline in-situ protection device and a construction method thereof, wherein the pipeline protection device comprises a pipeline protection machine component and at least two groups of support frames, each group of support frames comprises at least one group of support columns which are circumferentially distributed, and each support column comprises a concrete fixing section, a connecting part and a support section which are arranged from bottom to top; the pipeline protection mechanism is arranged on the top walls of the support sections and used for protecting pipelines; coupling assembling includes linkage segment and electromagnet, and the concrete canned paragraph is through pouring the formation, and the coaxial pouring of linkage segment is fixed on the concrete canned paragraph, and electromagnet sets up on supporting the section, and the linkage segment is coaxial to be seted up and to be supplied the spread groove that the support section stretched into, supports the section vertical stretch into the spread groove and with linkage segment sliding connection, and electromagnet can adsorb at the linkage segment inner wall. The application has the effect of being convenient for dismantle, improve the rate of reusability and utilization ratio the protection equipment of pipeline.
Description
Technical Field
The application relates to the technical field of pipeline protection, in particular to a large-scale municipal pipeline in-situ protection device and a construction method thereof.
Background
With the large-scale development of urban underground space development and utilization projects, underground pipelines of various big cities are squat like spider nets and are comprehensively staggered; in the construction process of urban underground tunnel and subway engineering projects, the urban underground tunnel and subway engineering projects inevitably conflict with existing underground pipelines, and great influence is caused on the construction progress, the construction period, the cost and the like of the planned projects.
When the excavation of foundation ditch meets large-scale, high-risk underground pipeline span length, unsettled height when being responsible for etc. in natural gas, power cable, sewage in the work progress when higher, in order to protect the normal use of original pipeline, must carry out normal position protection to original pipeline, and then guarantee resident's normal life on every side, reduce the damage to the pipeline in the work progress simultaneously. When protecting the pipeline, generally in order to reduce the construction influence to around the foundation ditch, all choose to support in the pipeline below. When the support is carried out, the hole is drilled below the pipeline and the depth is deeper than the depth of the foundation pit, and then the support is formed by pouring concrete or embedding the support equipment into the ground below the pipeline, so that the support of the pipeline is realized.
In view of the above-mentioned related technologies, during the construction of municipal engineering projects, such as subways and tunnels, large, high-risk and complex pipelines often need to be suspended for protection, and therefore larger pipeline supporting equipment is needed, or concrete columns with larger volumes are poured.
Disclosure of Invention
In order to facilitate the disassembly of the pipeline protection equipment and improve the reuse rate, the application provides the large-scale municipal pipeline in-situ protection device and the construction method thereof.
In a first aspect, the in-situ protection device for the large municipal pipeline provided by the application adopts the following technical scheme:
a large-scale municipal pipeline in-situ protection device comprises a pipeline protection machine component and at least two groups of support frames, wherein each group of support frame comprises at least one group of support columns which are circumferentially distributed in a surrounding manner, and each support column comprises a concrete fixing section, a connecting part and a support section which are arranged from bottom to top; the pipeline protection mechanism is arranged on the top walls of the support sections and used for protecting pipelines; coupling assembling includes linkage segment and electromagnet, the concrete canned paragraph is through pouring the formation, the coaxial pouring of linkage segment is fixed on the concrete canned paragraph, electromagnet sets up support on the section, the coaxial confession of having seted up of linkage segment support the spread groove that the section stretched into, support the section vertically stretch into the spread groove and with linkage segment sliding connection, electromagnet can adsorb the linkage segment inner wall.
By adopting the technical scheme, when the pipeline is subjected to in-situ protection, the pipeline is protected by the pipeline protection mechanism, the pipeline is supported by the plurality of groups of support frame bodies, the original height of the pipeline is ensured, and after the pipeline is supported and protected by other than soil, excavation of a foundation pit is carried out, so that the normal use of the original pipeline is not influenced; the concrete fixing section, the connecting section and the supporting section are arranged to divide the support of the pipeline into three parts, so that the three parts can be conveniently and independently installed or removed; the concrete fixing section is used as a supporting foundation and is connected and positioned with the ground below the bottom of the foundation pit, the supporting section and the connecting section are connected through the electromagnetic chuck by pouring the fixing connecting section and the concrete fixing section and controlling the connecting strength between the supporting section and the connecting section, and then the connecting section is used as an intermediate connecting piece to position the whole supporting section, so that the supporting stability of the supporting section is ensured; through electromagnetic chuck's circular telegram and outage, realize supporting the section and being connected with the linkage segment, be convenient for install and dismantle, can not cause destruction to supporting the section simultaneously, be convenient for support the used repeatedly of section, save the resource.
Optionally, the bottom wall of the support section is lower than the bottom wall of the foundation pit along the vertical direction.
Through adopting above-mentioned technical scheme, the diapire of support section is less than the foundation ditch diapire, proves that the spread groove diapire on the linkage segment is under the foundation ditch diapire promptly, supports the section disect insertion in the foundation ditch, further improves the stability of supporting the section, and is more reliable to the support and the protection of pipeline.
Optionally, the supporting section is provided with a square column, the connecting groove is correspondingly provided with a square column groove, and the electromagnetic chuck is arranged on the bottom wall of the supporting section and the peripheral side wall extending into the connecting groove.
Through adopting above-mentioned technical scheme, support the section and set up to square post, with the spread groove cooperation, the restriction supports the section and passes through the electromagnet location along the rotation of circumference and the removal of horizontal direction in vertical direction, and then carries out diversified, multi-direction location to supporting the section, further improves the stability and the reliability of supporting the section.
Optionally, still support the support body and still include the reinforcement subassembly, the reinforcement subassembly includes a plurality of connection pieces, web member and reinforcing plate, every group support the support body and include four groups of support columns, and is a plurality of the reinforcing plate distributes on supporting the section along vertical direction, and arbitrary the reinforcing plate centers on along circumference support the section setting, the connection piece sets firmly at the web member both ends, and arbitrary the web member both ends are all passed through the connection piece is bolted connection two respectively on the reinforcing plate on the support section.
By adopting the technical scheme, the support frame body is provided with four support columns in one group, the support is separated, when any support column is damaged or fails to support, the rest support columns can continue to support, so that the support frame body is more stable and reliable, and consumable materials are reduced; the connection piece, web member and the reinforcing plate that set up, at the excavation soil body, and expose the in-process of support section gradually, strengthen the relation of connection between each support column through the web member, improve the wholeness with the support column of organizing, increase hookup location and connection area through connection piece and reinforcing plate, convenient to detach simultaneously reduces the damage and the destruction to the support section, the used repeatedly of each spare part of being convenient for.
Optionally, the pipeline protection mechanism includes link and a plurality of truss unit, and is a plurality of the truss unit can be dismantled with the axial and connect and form the steel truss, just the steel truss cross-section sets up to "U" type, the link sets up a plurality of support section roof, the steel truss is detained to establish and can be dismantled the connection and be in on the link.
Through adopting the above technical scheme, link and the truss unit of setting, the link is violently established in a plurality of support body tops and is connected each support body, the truss unit connects gradually and forms a hollow steel truss, detain and establish on the link and connect, the pipeline that will treat the protection is protected around in the opening, the intact cable original state trench environment that has simulated, the electric power personnel business turn over of being convenient for overhaul, can guarantee that the safety problem intensity of normal position protection in-process cable is high, and high stability, and non-deformable, the protection effect is better.
Optionally, the pipeline protection mechanism further comprises a steel truss base and an inclined strut, wherein the bottom wall of the steel truss base is provided with a mounting groove into which the same group of support sections extend, and the support sections are detachably connected to the inner wall of the mounting groove; the connecting frame is arranged on the top walls of the steel truss bases, the inclined strut is symmetrical about the truss units and is evenly arranged on two sides of the steel truss, two ends of the inclined strut are respectively fixed on the steel truss bases and the truss units through bolts, and one end, close to the steel truss, of the inclined strut is higher than the other end of the inclined strut.
Through adopting above-mentioned technical scheme, the steel truss base and the bracing frame that set up are convenient for be connected with the link and support the link, fix a position support section top through the mounting groove, avoid the support column roof to expand outward under pipeline action of gravity, have the effect of gathering together the location, strengthen the joint strength between each truss unit and the steel truss base through the bracing frame, and then improve steel truss's stability.
Optionally, the pipeline protection mechanism further comprises a layering frame arranged in the truss unit, the layering frame comprises a vertical rod and a plurality of layering rods horizontally arranged on the vertical rod, and the vertical rod is vertically arranged on the inner wall of the truss unit.
Through adopting above-mentioned technical scheme, the layering frame that sets up can carry out the classified erection to different pipelines in the steel truss, and the installation is erect to the layering between the different fluxes of pipeline of different categories and the same kind pipeline, and is more orderly, and the workman of being convenient for differentiates and overhauls, is convenient for when the steel truss is demolishd the reclassification protection and the burying of various different categories of pipelines.
In a second aspect, the application provides a construction method of a large municipal pipeline in-situ protection device, which adopts the following technical scheme:
a construction method of a large-scale municipal pipeline in-situ protection device comprises the following steps:
s1: pre-protecting the pipeline; detecting and digging out the existing pipeline, and performing classified layered protection;
s2: constructing a support frame body; drilling a hole in the foundation pit, pouring a concrete fixing section, extending a supporting section into a connecting groove to be in contact with the bottom of the groove, electrifying an electromagnetic chuck, fixing the supporting section on a connecting section, pouring and fixing the connecting section and the concrete fixing section coaxially to complete the positioning of the supporting columns, then, repeatedly operating to complete the installation of a plurality of supporting columns, and finishing the construction of a supporting frame body;
s3: the pipeline protection mechanism is arranged on the top wall of the supporting section, and the pipeline is protected in the pipeline protection mechanism through the pipeline protection mechanism, so that in-situ protection of the pipeline is realized;
s4: excavating a soil body, and reinforcing the support section in the excavation process;
s5: after the building construction in the foundation pit is finished, the protection device is dismantled;
s51: removing the pipeline protection mechanism from the top wall of the support section;
s52: removing the reinforcement between the support sections;
s53: the electromagnetic chuck is powered off, no attraction exists between the supporting section and the connecting section, the supporting section is lifted away from the connecting section, and the support section is dismounted;
s54: and repeating the step S53 until the removal of the plurality of support sections is completed, and the removal of the support frame body is completed.
Through adopting above-mentioned technical scheme, the various pipelines of main part that adopt the earlier definite protection carry out the pre-protection, are convenient for support the building and the location of support body below it, confirm the support height of pipeline protection mechanism, rethread pipeline protection mechanism is in support body top with the pipeline protection, excavate the foundation ditch again at last, have effectively prevented the harm of work progress to the pipeline when guaranteeing pipeline normal use. When demolising simultaneously, with each support column segmentation connection and processing, carry out the high-speed joint through electromagnetic gravitation, be convenient for install fast and demolish, the effectual integrality that has protected this support subject of support section, to the damage of support section when avoiding follow-up abolishing, can not produce construction waste in the whole work progress, but cyclic utilization repeatedly, the theory of green construction has been embodied, and support frame body and the pipeline protection mechanism that use in the work progress are prefabricated modular component, its construction is simple convenient, overall stability is good.
Optionally, S1 includes:
s11: laying a fireproof sandbag on the bottom wall of the channel at the bottom of the pipeline;
s12: sleeving a protection pipe on the outer wall of the pipeline, and plugging and protecting joints at two ends of the protection pipe by using fireproof mud;
s13: classifying and layering various pipelines and cables, and placing the fireproof sand bag cushion among various pipelines for separation;
s14: and (3) paving a layer of fireproof sandbag on the pipeline at the uppermost layer, and then placing the wood board on the fireproof sandbag.
By adopting the technical scheme, the pipelines are pre-protected during construction of the support frame body, and meanwhile, classification and layered protection are carried out according to the types and the flux of the pipelines, so that various pipelines are prevented from being influenced with each other, and the pipelines are convenient to overhaul in the period; meanwhile, fireproof sandbags are laid on the top layer and the bottom layer, so that the effects of shock resistance and fire resistance are achieved, and the cable is prevented from being injured by falling objects above the sandbags.
Optionally, S2 includes:
s21: drilling according to the number of the support columns, wherein the hole depth is larger than the depth of the foundation pit;
s22: the supporting section extends into the connecting groove, one end of the electromagnetic chuck coaxially extends into the connecting groove, the electromagnetic chuck is electrified, the electromagnetic chuck generates magnetism and is tightly adsorbed on the inner wall of the connecting groove, and the connecting section is connected with the supporting section;
s23: placing a reinforcement cage in the hole, coaxially fixing the connecting section on the reinforcement cage, placing the reinforcement cage and the connecting section in the hole together, forming a concrete fixing section through concrete pouring, and fixedly connecting the concrete fixing section and the connecting section;
s24: and repeating S23 to complete the installation of a plurality of support columns, and finishing the construction of the support frame body.
Through adopting above-mentioned technical scheme, when the installation supports the support body, form the concrete canned paragraph under inserting the foundation ditch diapire through drilling and concrete placement to realize with the fixed connection of linkage segment, joint strength is high and stable, through will supporting in the vertical other end spread groove that stretches into the linkage segment of section, and whereabouts and spread groove diapire contact, can accomplish the connection to the electromagnet circular telegram again, connect rapidly and reliable and stable.
In summary, the present application includes at least one of the following beneficial technical effects:
the concrete fixing section, the connecting section and the supporting section are arranged to divide the support of the pipeline into three parts, so that the three parts can be conveniently and independently installed or removed; the concrete fixing section is used as a supporting foundation and is connected and positioned with the ground below the bottom of the foundation pit, the supporting section and the connecting section are connected through the electromagnetic chuck by pouring the fixing connecting section and the concrete fixing section and controlling the connecting strength between the supporting section and the connecting section, and then the connecting section is used as an intermediate connecting piece to position the whole supporting section, so that the supporting stability of the supporting section is ensured; the connection between the supporting section and the connecting section is realized by electrifying and powering off the electromagnetic chuck, so that the mounting and dismounting are convenient, meanwhile, the supporting section is not damaged, the repeated use of the supporting section is convenient, and the resources are saved;
a construction method of a large-scale municipal pipeline in-situ protection device comprises the steps of firstly determining various pipelines of a protected main body to carry out pre-protection, facilitating the construction and positioning of a support frame body below the pipeline, determining the supporting height of a pipeline protection mechanism, protecting the pipelines above the support frame body through the pipeline protection mechanism, and finally excavating a foundation pit, so that the damage to the pipelines in the construction process is effectively prevented while the normal use of the pipelines is ensured;
when demolising, with each support column segmentation connection and processing, carry out the high-speed joint through the gravitation of electromagnetism, be convenient for install fast and demolish, the effectual integrality that has protected this support subject of support section, to the damage of support section when avoiding follow-up abolishing, can not produce construction waste in the whole work progress, but cyclic utilization repeatedly, the theory of green construction has been embodied, and support frame body and the pipeline protection mechanism that use in the work progress are prefabricated modular component, its construction is simple convenient, overall stability is good.
Drawings
FIG. 1 is a schematic overall structure diagram of a large municipal pipeline in-situ protection device according to an embodiment of the present application.
Fig. 2 is a schematic view of the overall structure of the support column.
Fig. 3 is a schematic structural view of the truss unit and the connection frame.
Fig. 4 is a schematic structural view of the shelf.
Fig. 5 is a schematic structural view of a steel truss base.
FIG. 6 is a construction flow chart of a construction method of the large-scale municipal pipeline in-situ protection device according to the embodiment of the application.
Reference numerals: 1. a line protection machine component; 11. a steel truss base; 111. a reinforcing bar; 112. mounting grooves; 12. an oblique bracket; 13. a connecting frame; 131. a cross bar; 132. a connecting rod; 14. a truss unit; 15. a layered rack; 151. a vertical rod; 152. a layering rod; 153. a limiting block; 2. a support frame body; 21. a reinforcement assembly; 211. a reinforcing plate; 212. a web member; 213. connecting sheets; 22. a support pillar; 221. a concrete fixing section; 222. a reinforcement cage; 223. a connecting section; 224. an electromagnetic chuck; 225. a support section; 226. and connecting the grooves.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses large-scale municipal pipeline normal position protection device. Referring to fig. 1, large-scale municipal pipeline normal position protection device includes pipeline protection machine component 1 and at least two sets of support body 2, and two sets of support body 2 are close to overhead pipeline both ends setting respectively, and all the other support body 2 evenly set up between support body 2 at both ends, and the quantity of supporting support body 2 is according to the length decision that pipeline built on stilts, every interval of group 15 m. The pipeline protection machine member 1 is disposed on the top of the plurality of support frames 2 and protects the overhead pipeline.
Referring to fig. 2, each group of support frame 2 includes a reinforcement assembly 21 and four groups of support columns 22 distributed in a square shape around the circumference, each support column 22 includes a concrete fixing section 221, a connecting member and a support section 225 arranged from bottom to top, and each connecting member includes a connecting section 223 and an electromagnetic chuck 224. The concrete fixing section 221 is formed by pouring concrete, the bottom wall of the concrete fixing section 221 is inserted into the bottom wall of the foundation pit, and the top wall of the concrete fixing section 221 exceeds the top wall of the foundation pit; one end of the connecting section 223 coaxially extends into the steel reinforcement cage 222 for pouring, is welded and fixed with the steel reinforcement cage 222, is fixed with the concrete fixing section 221 through concrete pouring, and the other end of the connecting section 223 extends out of the top wall of the concrete fixing section 221; the connecting section 223 is made of steel, the top wall of the connecting section 223 is coaxially provided with a square column connecting groove 226 for the supporting section 225 to extend into, and the bottom wall of the connecting groove 226 is lower than the bottom wall of the foundation pit.
Referring to fig. 2, the supporting section 225 vertically extends into the connecting groove 226 and is slidably connected with the connecting section 223, the supporting section 225 is a square-column-shaped lattice column, supporting strength is high, materials are saved, and transportation is facilitated; the electromagnetic chuck 224 is arranged in a square column shape and is welded on the bottom wall of the support section 225 and the peripheral side wall extending into the connecting groove 226; the electromagnetic chuck 224 is electrified to generate magnetic force and is adsorbed on the inner wall of the connecting section 223.
Referring to fig. 1 and 2, the reinforcing assembly 21 includes a plurality of reinforcing plates 211, web members 212, and connecting pieces 213, the reinforcing plates 211 are square steel sheets, the plurality of reinforcing plates 211 are distributed along the length direction of the supporting section 225, and the reinforcing plates 211 are coaxially sleeved and welded on the supporting section 225; the connecting pieces 213 are welded at two ends of the web member 212, and when the web member 212 is in a horizontal state, the connecting pieces 213 at two ends of the web member 212 are respectively fixed on the reinforcing plates 211 on any two supporting sections 225 through a plurality of groups of bolts; when the web member 212 inclines, the connecting pieces 213 at the two ends of the web member 212 are respectively fixed on the reinforcing plate 211 on the adjacent supporting section 225 through a plurality of groups of bolts, and form a stable triangular structure with the supporting section 225 and the horizontal web plate, so that the supporting section 225 is reinforced.
Referring to fig. 3 and 4, the pipeline protection mechanism includes a steel truss base 11, an angle bracket 12, a connecting frame 13, a plurality of truss units 14, and a plurality of layered frames 15 disposed in the truss units 14; the truss unit 14 is made of I-shaped steel, three sides of the truss unit are closed, the bottom wall of the truss unit is open, namely the cross section of the truss unit 14 is arranged to be in an inverted U shape; the number of truss units 14 is determined according to the length of the overhead pipe, and a plurality of truss units 14 are coaxially bolted to form a steel truss. The layering frame 15 comprises a vertical rod 151 and a plurality of layering rods 152 which are horizontally and uniformly welded on the vertical rod 151, and the top wall of one end, far away from the vertical rod 151, of each layering rod 152 is integrally provided with a limiting block 153; the vertical rods 151 are vertically fixed to two opposite inner wall frames of the truss unit 14 by bolts, and the layering rods 152 are disposed toward the inside of the truss unit 14, so as to erect the pipelines and classify and layer the pipelines.
Referring to fig. 5, the steel truss base 11 is a square frame formed by welding steel materials, and reinforcing rods 111 are welded to opposite corners of the steel truss base 11. The bottom wall of the steel truss base 11 is provided with mounting grooves 112 near four corners for the top walls of the same group of supporting sections 225 to extend into, and the supporting sections 225 are fixed on the inner walls of the mounting grooves 112 through a plurality of groups of bolts; the connecting frame 13 includes two parallel cross bars 131 and a plurality of connecting rods 132 uniformly disposed between the two cross bars 131, the connecting rods 132 are perpendicular to the cross bars 131, and two sections of the connecting rods 132 are respectively fixed on the two cross bars 131 through bolts. The connecting frames 13 are fixed on the top walls of the steel truss bases 11 through bolts, and the length direction of the connecting frames is distributed along the direction of the overhead pipeline. Referring to fig. 1, four inclined brackets 12 are arranged corresponding to any one steel truss base 11, are symmetrical about a truss unit 14 and are uniformly arranged on two sides of the steel truss; one end of the inclined strut 12 is fixed at the corner of the top wall of the steel truss through a bolt, the other end of the inclined strut is fixed on the truss unit 14 through a bolt, and one end of the inclined strut 12 close to the steel truss is higher than the other end of the inclined strut.
The implementation principle of the large-scale municipal pipeline in-situ protection device in the embodiment of the application is as follows: various pipelines of a main body to be protected are determined firstly, and the pipelines are pre-protected, so that the support frame body 2 below the pipelines can be conveniently constructed and positioned, and the support height of the pipeline protection mechanism is determined; then, the pipeline is surrounded and protected above the support frame body 2 through a steel truss formed by a plurality of truss units 14, and the regularity of the pipeline is still kept during foundation pit construction through the layered frame 15, so that workers can conveniently overhaul the pipeline; finally, the foundation pit is excavated again, and the support frame body 2 is reinforced again in the excavation process, so that the pipeline is effectively prevented from being damaged in the construction process while the normal use of the pipeline is ensured. Through connecting support column 22 segmentation and handling, carry out the high-speed joint through the gravitation of electromagnetism, be convenient for support the holistic installation of support body 2 and demolish to protecting the support subject, but recycle has embodied the theory of green construction.
The embodiment of the application also discloses a construction method of the large-scale municipal pipeline in-situ protection device, and with reference to fig. 6, the large-scale municipal pipeline in-situ protection device comprises the following steps:
s1: pre-protecting pipelines, detecting and digging out the existing pipelines, and performing classified layered protection;
s11: the special fireproof sand bag of 40cm multiplied by 70cm is used, sand is filled to 70 percent of the full capacity of the sand bag and is flatly paved on the bottom wall of the channel at the bottom of the pipeline, and the shockproof protection effect is achieved;
s12: MPP protection pipes with different diameters and 1cm in thickness are selected to be wrapped on the outer wall of the pipeline according to the diameter of the pipeline, the pipeline is wrapped and protected, special fireproof mud is used for plugging and protecting interfaces at two ends of the protection pipes of the pipeline, and the phenomenon that impurity dust enters the pipeline to cause abrasion is reduced;
s13: the cable is protected in a layered mode by using special fireproof sandbags, namely, each layer of protection pipe is integrally placed on the special fireproof sandbag below the protection pipe, a second layer of special fireproof sandbag is placed on the placed protection pipe, and the rest is done in the same way, so that the purpose of placing different pipelines of different types and similar pipelines in a layered and isolated mode with different fluxes is achieved;
s14: a layer of special fireproof sandbag is paved on the uppermost protection tube, and then a wood board is placed on the special fireproof sandbag to prevent falling objects above from smashing and damaging the cable.
S2: constructing a support frame body 2;
s21: adopting a rotary drilling rig to form a hole, wherein the aperture and the hole height are determined according to the number of pipelines and the depth calculation of a foundation pit;
s22: the supporting section 225 is inserted into the connecting groove 226, one end of the electromagnetic chuck 224 is coaxially inserted into the connecting groove 226, the electromagnetic chuck 224 is electrified, the electromagnetic chuck 224 generates magnetism and is tightly adsorbed on the inner wall of the connecting groove 226, and the connecting section 223 is connected with the supporting section 225;
s23: constructing a support column 22;
s231: after the hole is formed, the steel reinforcement cage 222 is hoisted by a crane, the steel reinforcement cage 222 is vertically lowered to the hole opening and then is temporarily fixed by a steel wire rope, and the other end of the steel wire rope is fixed on the ground by a cement nail;
s232: hoisting the connected connecting section 223 and the supporting section 225, coaxially and vertically extending one end of the connecting section 223, which is far away from the supporting section 225, into the reinforcement cage 222, wherein the length of the connecting groove 226, which extends into the reinforcement cage 222, is 3m, then welding the connecting section 223 on the reinforcement cage 222, loosening the steel wire rope, and continuously lowering the whole supporting column 22 to the designed elevation;
s233: pouring concrete into the hole from bottom to top, pouring the concrete to a position 0.5m above the reinforcement cage 222, backfilling coarse sand in a gap between the hole wall and the support section 225 by a water drop method, and filling the lattice column pile hole of the support section 225;
s24: repeating S21-S23 to complete the installation of the plurality of supporting columns 22, and finishing the construction of the supporting frame body 2;
s3: installing a pipeline protection mechanism, and protecting the pipeline in the pipeline protection mechanism through the pipeline protection mechanism to realize in-situ protection of the pipeline;
s31: manually removing the pipe ditch of the pipeline, temporarily retaining the bottom plate, and paying attention to protecting the pipeline in the removing process until the pipe ditch is completely removed and cleaned;
s32: the base is placed on a pipeline trench bottom plate, the connecting frame 13 is fixed on the bottom plate through bolts, the pipeline is placed on the connecting frame 13, the truss unit 14 is buckled on the connecting frame 13, the position is adjusted, the pipeline is surrounded, and the truss unit 14 is fixed on the connecting frame 13 through bolts;
s33: installing the layered frame 15 on the truss unit 14, and moving the pipelines sleeved with the protection pipes to the layered rods 152 in a classified manner;
s34: locally breaking a pipe ditch bottom plate, installing a truss base, enabling the top end of the latticed column of the supporting section 225 to extend into the installation groove 112, and firmly connecting the steel truss base 11 with the latticed column through bolts;
s35: welding an inclined strut 12, wherein one end of the inclined strut 12 is fixed on the steel truss base 11 through a bolt, and the other end of the inclined strut 12 is fixed on the cross frame unit through a bolt;
s36: repeating S34-S35, and sequentially carrying out segmentation until all the truss units 14 are installed;
s37: after the steel truss is installed and the pipeline is put on the frame, a steel wire mesh is laid on a base inside the steel truss and is reinforced, so that personnel can conveniently enter maintenance, the steel wire mesh and a baffle plate are laid on the top of the truss, objects above the steel wire mesh are prevented from falling down to damage the cable, and the cable is prevented from being damaged by sun and rain;
s4: excavating a soil body, excavating the earthwork layer by layer and section according to the depth of the foundation pit, and reinforcing the support section 225 in the excavation process; when the excavation is carried out for 2.5m, the exposed supporting section 225 lattice columns are reinforced and connected, the web members 212 are connected to the reinforcing plates 211 on the two lattice columns through the connecting sheets 213, and the lower soil body excavation is carried out after the connection is stable until the excavation reaches the designed elevation;
s5: after the foundation pit is excavated, performing concrete pouring reinforcement treatment on the insertion position of the concrete support section 225 and the bottom wall of the foundation pit until the construction in the foundation pit is finished, and then dismantling the protection device from top to bottom; before dismantling, a warning area is set, a special person is set at a warning line, a warning mark is set, and entry of irrelevant persons is prohibited;
s51: removing the line protection mechanism from the top wall of the support section 225;
s511: removing the steel wire mesh, the baffle plates and the like on the steel truss, and then unloading the pipelines of each layer from the layered frame 15;
s512: binding and fixing any cross frame unit by using a crane, then removing bolts connected with the truss unit 14, separating, hoisting the truss unit 14 by using the crane, classifying and neatly stacking various removed components, and placing sleepers below the components to facilitate taking down a steel wire rope of the crane;
s513: repeating S512, and dismantling the truss units 14 in sequence;
s514: then sequentially detaching the connecting frame 13 and the steel truss base 11, and hoisting off by using a crane for classified storage;
s52: removing the reinforcement between the support sections 225; the connection between the connecting sheet 213 and the reinforcing sheet 211 is removed from the top down, and the web members 212 are removed for centralized storage;
s53: powering off any electromagnetic chuck 224, wherein no magnetic attraction exists between the supporting section 225 and the connecting section 223, and lifting the supporting section 225 by using a crane until the supporting section 225 is completely lifted away from the connecting section 223 to finish the removal of the supporting section 225;
s54: and repeating the step S53, and sequentially removing and hoisting the other support sections 225 until the removal of the plurality of support sections 225 is completed, and then breaking the exposed concrete fixing section 221 to finish the removal of the support frame body 2.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a large-scale municipal pipeline normal position protection device which characterized in that: the pipeline protection machine comprises a pipeline protection machine component (1) and at least two groups of support frame bodies (2), wherein each group of support frame body (2) comprises at least one group of support columns (22) which are circumferentially distributed in a surrounding manner, and each support column (22) comprises a concrete fixing section (221), a connecting part and a support section (225) which are arranged from bottom to top; the pipeline protection mechanism is arranged on the top walls of the support sections (225) and protects pipelines; coupling assembling includes linkage segment (223) and electromagnet (224), concrete canned paragraph (221) is through pouring the formation, linkage segment (223) coaxial pouring is fixed on concrete canned paragraph (221), electromagnet (224) set up support on the section (225), the confession has been seted up to linkage segment (223) is coaxial support connection groove (226) that section (225) stretched into, support section (225) vertical stretch into connection groove (226) and with linkage segment (223) sliding connection, electromagnet (224) can adsorb in linkage segment (223) inner wall.
2. The in-situ protection device for large municipal pipelines according to claim 1, wherein: the bottom wall of the support section (225) is lower than the bottom wall of the foundation pit along the vertical direction.
3. The in-situ protection device for large municipal pipelines according to claim 1, wherein: the support section (225) is set to be a square column, the connecting groove (226) is correspondingly set to be a square column groove, and the electromagnetic chuck (224) is arranged on the bottom wall of the support section (225) and the peripheral side wall extending into the connecting groove (226).
4. The in-situ protection device for large municipal pipelines according to claim 1, wherein: still support body (2) and still include reinforcement assembly (21), reinforcement assembly (21) includes a plurality of connection pieces (213), web member (212) and reinforcing plate (211), every group support body (2) including four groups of support columns (22), and is a plurality of vertical direction distribution is followed on support section (225) reinforcing plate (211), and arbitrary reinforcing plate (211) centers on along circumference support section (225) sets up, connection piece (213) set firmly at web member (212) both ends, and arbitrary web member (212) both ends all pass through connection piece (213) difference bolted connection is two on the reinforcing plate (211) on support section (225).
5. The in-situ protection device for large municipal pipelines according to claim 1, wherein: pipeline protection mechanism includes link (13) and a plurality of truss unit (14), and is a plurality of truss unit (14) can be dismantled with the axial and connect and form the steel truss, just the steel truss cross-section sets up to "U" type, link (13) set up a plurality of support section (225) roof, the steel truss is detained to establish and can be dismantled the connection and be in on link (13).
6. The in-situ protection device for large municipal pipelines according to claim 5, wherein: the pipeline protection mechanism further comprises a steel truss base (11) and an inclined strut (12), wherein the bottom wall of the steel truss base (11) is provided with a mounting groove (112) into which the same group of support sections (225) extend, and the support sections (225) are detachably connected to the inner wall of the mounting groove (112); the connecting frame (13) is arranged on the top wall of the steel truss base (11), the inclined strut (12) is symmetrical about the truss unit (14) and is uniformly arranged on two sides of the steel truss, two ends of the inclined strut (12) are respectively fixed on the steel truss base (11) and the truss unit (14) through bolts, and one end, close to the steel truss, of the inclined strut (12) is higher than the other end of the inclined strut.
7. The in-situ protection device for large municipal pipelines according to claim 5, wherein: the pipeline protection mechanism further comprises a layered frame (15) arranged in the truss unit (14), the layered frame (15) comprises a vertical rod (151) and a plurality of layered rods (152) horizontally arranged on the vertical rod (151), and the vertical rod (151) is vertically arranged on the inner wall of the truss unit (14).
8. A construction method of a large-scale municipal pipeline in-situ protection device is characterized by comprising the following steps: use of a large municipal pipeline in-situ protection device according to any one of claims 1 to 7, comprising the steps of:
s1: pre-protecting the pipeline; detecting and digging out the existing pipeline, and performing classified layered protection;
s2: constructing a support frame body (2); drilling a hole in a foundation pit, pouring a concrete fixing section (221), extending a supporting section (225) into a connecting groove (226) to be in contact with the bottom of the groove, electrifying an electromagnetic chuck (224), fixing the supporting section (225) on a connecting section (223), coaxially pouring and fixing the connecting section (223) and the concrete fixing section (221), completing the positioning of the supporting columns (22), then repeating the operation to complete the installation of a plurality of supporting columns (22), and completing the construction of a supporting frame body (2);
s3: the pipeline protection mechanism is arranged on the top wall of the support section (225), and the pipeline is protected in the pipeline protection mechanism through the pipeline protection mechanism, so that the in-situ protection of the pipeline is realized;
s4: excavating a soil body, and reinforcing the supporting section (225) in the excavation process;
s5: after the building construction in the foundation pit is finished, the protection device is dismantled;
s51: removing the line protection mechanism from the top wall of the support section (225);
s52: removing the reinforcement between the support sections (225);
s53: the electromagnetic chuck (224) is powered off, no attraction exists between the supporting section (225) and the connecting section (223), the supporting section (225) is lifted away from the connecting section (223), and the support section (225) is dismounted;
s54: and repeating S53 until the removal of the plurality of support sections (225) is completed, and the removal of the support frame body (2) is completed.
9. The construction method of the large-scale municipal pipeline in-situ protection device according to claim 8, characterized in that: s1 includes:
s11: laying a fireproof sandbag on the bottom wall of the channel at the bottom of the pipeline;
s12: sleeving a protection pipe on the outer wall of the pipeline, and plugging and protecting joints at two ends of the protection pipe by using fireproof mud;
s13: classifying and layering various pipelines and cables, and placing the fireproof sand bag cushion among various pipelines for separation;
s14: and (3) paving a layer of fireproof sandbag on the pipeline at the uppermost layer, and then placing the wood board on the fireproof sandbag.
10. The construction method of the large-scale municipal pipeline in-situ protection device according to claim 8, characterized in that: s2 includes:
s21: drilling according to the number of the support columns (22), wherein the depth of the holes is larger than that of the foundation pit;
s22: the supporting section (225) extends into the connecting groove (226), one end of the electromagnetic chuck (224) coaxially extends into the connecting groove (226), the electromagnetic chuck (224) is electrified, the electromagnetic chuck (224) generates magnetism and is tightly adsorbed on the inner wall of the connecting groove (226), and the connecting section (223) is connected with the supporting section (225);
s23: placing a reinforcement cage (222) in the hole, coaxially fixing the connecting section (223) on the reinforcement cage (222), placing the reinforcement cage and the reinforcement cage (222) in the hole together, forming a concrete fixing section (221) by pouring concrete, and fixedly connecting the concrete fixing section and the connecting section (223);
s24: and repeating S23 to finish the installation of a plurality of supporting columns (22), and finishing the construction of the supporting frame body (2).
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| CN202111309592.1A CN113944185A (en) | 2021-11-06 | 2021-11-06 | Large-scale municipal pipeline in-situ protection device and construction method thereof |
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| CN202111309592.1A CN113944185A (en) | 2021-11-06 | 2021-11-06 | Large-scale municipal pipeline in-situ protection device and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115217122A (en) * | 2022-08-25 | 2022-10-21 | 广东城华工程咨询有限公司 | Municipal pipeline protection structure and construction method thereof |
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Application publication date: 20220118 |