CN111981200A - Integrated construction method for designing and constructing complex pipeline comprehensive support system - Google Patents
Integrated construction method for designing and constructing complex pipeline comprehensive support system Download PDFInfo
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- CN111981200A CN111981200A CN202010853549.0A CN202010853549A CN111981200A CN 111981200 A CN111981200 A CN 111981200A CN 202010853549 A CN202010853549 A CN 202010853549A CN 111981200 A CN111981200 A CN 111981200A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/02—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets partly surrounding the pipes, cables or protective tubing
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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
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
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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
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
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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
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/06—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle
- H02G1/08—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for laying cables, e.g. laying apparatus on vehicle through tubing or conduit, e.g. rod or draw wire for pushing or pulling
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Abstract
The invention discloses a design and construction integrated construction method of a complex pipeline comprehensive support system, which belongs to the technical field of building pipeline construction, and is characterized in that all pipelines of an electromechanical full specialty are optimally arranged by a BIM technology, the installation position and elevation of the pipelines are determined, and the installation position and the support form of a support are determined; and (3) calculating the support materials by constructors according to the BIM drawing, processing the support materials in a factory according to a material plan to manufacture an assembled finished product, and performing assembled installation by field constructors according to BIM typesetting and design. The invention realizes factory prefabrication, reduces field manufacturing processes, greatly reduces construction period, is simple to construct, can effectively improve construction efficiency, reduces energy consumption and reduces construction cost.
Description
Technical Field
The invention relates to the technical field of building pipeline construction, in particular to a design and construction integrated construction method of a complex pipeline comprehensive support system.
Background
The traditional pipeline supporting and hanging bracket adopts sectional materials such as angle steel, channel steel and the like, and water and electricity pipelines, bridges, air pipes and the like are fixed on a structural surface by a method of welding process group connection and bolt fixation. In recent years, public buildings are more and more complex, the installation space of electromechanical pipelines is more and more compact, people put forward higher requirements on the quality and the construction period of the buildings, and meanwhile, green buildings are more and more widely valued by society.
Disclosure of Invention
The technical task of the invention is to provide a design and construction integrated construction method of a complex pipeline comprehensive support system aiming at the defects, the construction is simple, the construction efficiency can be effectively improved, the energy consumption is reduced, and the construction cost is reduced.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the design and construction integrated construction method of the complex pipeline comprehensive support system comprises the steps of optimally arranging all electromechanical full-professional pipelines by a BIM technology, determining the installation position and elevation of the pipelines, and determining the installation position and form of a support;
and (3) calculating the support materials by constructors according to the BIM drawing, processing the support materials in a factory according to a material plan to manufacture an assembled finished product, and performing assembled installation by field constructors according to BIM typesetting and design.
Through the application of the BIM technology, all electromechanical full-professional pipelines are optimally distributed, the pipeline installation position and elevation are determined, the support installation position and form are also determined, a constructor can conveniently calculate support materials including sectional materials, connecting pieces and the like according to a BIM drawing, a professional manufacturer can process and manufacture the support materials in a factory according to a material plan, and the support materials are delivered to a field constructor to be assembled and installed according to BIM typesetting and design.
Specifically, the construction process of the method is as follows:
1) the method comprises the following steps of optimizing drawings, comprehensively arranging pipelines, solving the design problem through the review of the drawings, and optimizing the drawings by combining various specialties and engineering characteristics;
2) selecting a support and hanger form through BIM typesetting;
3) measuring the actual net size, and adjusting the comprehensive arrangement of BIM pipelines;
4) calculating the type of the materials, and selecting proper section bars and connecting pieces through the calculation of the distance between the brackets and the borne load;
5) determining a bracket, determining the form and specification of the bracket, and forming a material plan to deliver to a manufacturer for production;
6) the manufacturer produces and prepares the construction machinery;
7) on-site measurement and positioning, measurement and paying-off are carried out according to BIM comprehensive pipeline arrangement and support form selection,
8) blanking and assembling, and accurately cutting the sectional material for the bracket according to the size determined by the BIM typesetting;
9) mounting a bracket;
10) checking, accepting and adjusting, wherein the finished support of one surface or one system is subjected to self-checking and centralized checking, and unqualified supports are modified;
11) and installing and fixing the pipeline.
Further, the drawing optimization and the pipeline comprehensive arrangement comprise the steps of carrying out pipeline comprehensive typesetting on main parts by using BIM software, solving the problem of professional collision, and determining the installation position and elevation of each professional pipeline, wherein the main parts comprise pipeline complex areas such as a corridor, a pipe gallery, a machine room, a roofing equipment layer, a pipe shaft, a guest room entrance hall, a toilet and the like;
the form of a supporting and hanging frame is determined by BIM software, a joint support is used at certain positions, a supporting and hanging frame is made at certain positions in each specialty, a fixed support or a movable support is used, and an anti-seismic support is arranged at certain positions and can be displayed in the BIM software; and supplementary unloading is carried out through BIM row board, including the cross arm size, jib length all can be measured out 1:1, very big convenience field construction personnel.
Specifically, the calculation process for calculating the material model is as follows:
determining the shape selection of the channel steel cross arm according to the bending-resistant section coefficient W, wherein the bending-resistant section coefficient is only related to the shape and the size of the section, is a physical quantity for describing the influence of the section shape of the part on the stress, the bending moment, the torque and the like of the part, is a section geometric parameter of a mechanical part and a component, and is used for calculating the bending strength and the torsional strength of the part and the component or calculating the maximum stress on the section under the given bending moment or torque condition;
M＝FL
wherein F is the force acting on the member cross section;
l is the distance from the action point to the bending moment calculation point;
Mmaxthe bending moment is the resultant moment of an internal force system vertical to the cross section, and the magnitude of the resultant moment is the algebraic sum of all external forces on the component part intercepted by the cross section and the centroid moment of the cross section;
σ max is the bending strength, and refers to the maximum stress that a material can withstand when it breaks under a bending load or reaches a specified bending moment, which is the maximum positive stress during bending. It reflects the ability of a material to resist bending, which is a measure of the bending properties of the material.
Preferably, Q235 is used as the steel, the yield strength value is 235MP, and the bending design strength value is 215 MP; calculating sigma Mmax by the formula, wherein the bending moment is 2.5 times of safety coefficient, namely
W＝2.5∑Mmax/215
And obtaining the bending-resistant section coefficient, and selecting a proper channel steel type according to the bending-resistant section coefficient.
Preferably, the site measurement and positioning are carried out by firstly measuring a first support position by using a steel tape, then arranging and setting the rest fixed points in a line by using a laser pay-off instrument, drawing a small cross on the structural beam or the shear wall by using a marking pen, and matching a horizontal ruler and a line cone for ensuring the level and the verticality of the support installation.
Preferably, for on-site blanking and assembly, bolt holes are punched in C-shaped steel generally used for light brackets before leaving factories, channel steel used for heavy brackets needs to be punched on site according to pipeline positioning, one line in the center of a pipeline needs to be considered, and the bolt holes are positioned at different positions according to actual outer diameters;
the small bracket is assembled on the ground and then is installed in place at one time; heavy support dispersion piece installs one by one, installs fixedly in proper order from stand to cross arm, from last down.
Further, the support base is installed according to the design interval and is installed on the side beam as far as possible, and the distance between the bottom layer expansion bolt and the beam bottom is not smaller than 15 cm; the base fixed on the floor slab should avoid the position of the embedded electric wire pipe when being installed.
Preferably, all the supports are connected through bolts, all the supports are mounted and can be detached, maintenance operation is facilitated, and detached parts can be reused.
Preferably, the acceptance contents comprise the form and the model of the bracket, the spacing and the height of the bracket, the screwing degree, the verticality and the levelness.
The construction method is suitable for the support installation of water supply and drainage pipelines, electric bridges, fire fighting water pipelines, spraying pipelines, air conditioning water pipelines and ventilating pipelines in electromechanical installation construction of public buildings and civil buildings, and comprises the application of independent support hangers, double-pipe support hangers, three-pipe support hangers, combined support hangers, movable supports, fixed supports and earthquake-resistant support hangers.
Compared with the prior art, the design and construction integrated construction method of the complex pipeline comprehensive support system has the following beneficial effects:
by the design and construction integrated construction method, factory prefabrication is realized, the field manufacturing process is reduced, and the construction period is greatly shortened; the operator can install the electric drill by combining at least two persons and four wrenches; the support and hanger frame is connected through the bolt, all the installed components can be disassembled to facilitate maintenance operation, and the disassembled components can be reused.
The whole construction process is free of welding, so that air pollution and harm to the body of workers are greatly reduced;
in the blanking process, only the hanger rod, the hanging rib and the section bar are cut according to the design, and one group of two persons can finish the work, so that the installation is simple and quick, and a large amount of labor is reduced by using the hanging bracket; compared with the traditional welding process of the support and hanger, only the cutting of the section bar and the expansion bolt punching need to use electricity, so that a large amount of electricity charge used by an electric welding machine is saved;
the finished product support hanger finishes galvanizing when leaving a factory, has uniform galvanizing layer thickness, can be used for more than 30 years in an indoor environment, and is particularly suitable for coastal humid areas.
Drawings
FIG. 1 is a process flow diagram of a design and construction integrated construction method of a complex pipeline comprehensive support system provided by an embodiment of the invention;
FIG. 2 is a diagram illustrating an example of BIM synthesis pipeline typesetting provided in an embodiment of the present invention;
fig. 3 is a single-bar mobile hanger provided in an embodiment of the invention, in which: 1. anchor bolts, 2, flange nuts, 3, C-shaped connecting pieces, 4, screw rods, 5 and tube bundles;
fig. 4 is a single bar fixed hanger provided in an embodiment of the present invention, in which: 1. anchor bolts, 2, gaskets, 3, hexagonal nuts, 4, C-shaped steel bases, 5, outer hexagonal bolts, 6, C-shaped steel, 7, C-shaped steel lock catches, 8, tube bundles, 9 and end covers;
fig. 5 is a movable support provided in an embodiment of the present invention, in which: 1. anchor bolts, 2, C-shaped connecting pieces, 3, lead screws, 4, flange nuts, 5, C-shaped steel buckle plates, 6 and C-shaped steel;
fig. 6 is a fixing bracket provided in an embodiment of the present invention, in which: 1. anchor bolts, 2, gaskets, 3, nuts, 4, outer hexagon bolts, 5, C-shaped steel lock catches, 6, C-shaped steel bases, 7, C-shaped steel, 8, angle connecting pieces, 9 and end covers;
fig. 7 is a combination support provided in an embodiment of the invention, in which: 1. the device comprises a channel steel base, 2, a connecting piece, 3, a bottom end connecting piece, 4 and channel steel;
fig. 8 is a single-tube carrier provided in an embodiment of the invention, in which: 1. anchor bolt, 2, gasket, 3, nut, 4, tube bank, 5, outer hexagon bolt, 6, C shaped steel hasp, 7, trailing arm, 8, end cover.
Detailed Description
The invention is further described with reference to the following figures and specific examples.
The method is explained in detail by using a sunshine city Quishan passenger station and a matched engineering project thereof accepted by our company, BIM software is applied to the combination of an assembled support and hanger technology, and a set of novel and complete design and construction integrated process and method are formed by continuously innovating, improving and summarizing on the basis of the existing finished product support. The process method has the advantages that the process method is from inexistence to existence in the project, and good economic benefits and social benefits are obtained from template construction to large-area use, so that the process method is worthy of being popularized in electromechanical installation construction.
The embodiment of the invention provides a design and construction integrated construction method for a complex pipeline comprehensive support system, which is characterized in that all electromechanical full-professional pipelines are optimally arranged by a BIM technology, the installation position and elevation of the pipelines are determined, and the installation position and the support form of a support are determined;
and (3) calculating the support materials by constructors according to the BIM drawing, processing the support materials in a factory according to a material plan to manufacture an assembled finished product, and performing assembled installation by field constructors according to BIM typesetting and design.
Through the application of the BIM technology, all electromechanical full-professional pipelines are optimally distributed, the pipeline installation position and elevation are determined, the support installation position and form are also determined, a constructor can conveniently calculate support materials including sectional materials, connecting pieces and the like according to a BIM drawing, a professional manufacturer can process and manufacture the support materials in a factory according to a material plan, and the support materials are delivered to a field constructor to be assembled and installed according to BIM typesetting and design.
Referring to fig. 1, the method is constructed as follows:
1) optimizing a drawing and comprehensively arranging pipelines;
2) selecting a support and hanger form through BIM typesetting;
3) measuring the actual net size, and adjusting the comprehensive arrangement of BIM pipelines;
4) calculating the type of the materials, and selecting proper section bars and connecting pieces through the calculation of the distance between the brackets and the borne load;
5) determining a bracket, determining the form and specification of the bracket, and forming a material plan to deliver to a manufacturer for production;
6) the manufacturer produces and prepares the construction machinery;
7) on-site measurement and positioning, measurement and paying-off are carried out according to BIM comprehensive pipeline arrangement and support form selection,
8) blanking and assembling, and accurately cutting the sectional material for the bracket according to the size determined by the BIM typesetting;
9) mounting a bracket;
10) checking, accepting and adjusting, wherein the finished support of one surface or one system is subjected to self-checking and centralized checking, and unqualified supports are modified;
11) and installing and fixing the pipeline.
Optimizing drawings and comprehensively arranging pipelines:
the design problem is solved through the review of drawings, and then the drawings are optimized by combining various specialties and engineering characteristics. The method comprises the following steps of performing pipeline comprehensive typesetting on main parts by using BIM software, solving the problem of professional collision, and determining the installation positions and elevations of various professional pipelines, wherein the main parts comprise pipeline complex areas such as a corridor, a pipe gallery, a machine room, a roofing equipment layer, a pipeline well, a guest room entrance hall, a toilet and the like; the following problems can be identified:
(1) determining the form of a support and hanger, using a joint support at which parts, independently making a support and hanger at which parts, using a fixed support or a movable support, and installing an anti-seismic support at which parts, all of which can be displayed in BIM software;
(2) and auxiliary blanking: accurate blanking of auxiliary supporting and hanging frames is carried out through the BIM row plates, the length of each hanging rod can be measured in a ratio of 1:1 including the size of the cross arm, and great convenience is brought to field construction personnel.
Considering the production cycle of the fabricated support, the drawing optimization and the pipeline comprehensive arrangement are generally completed one month before the completion of the main body, and the requirements of the project total progress plan are specifically met, so that the advance of the electromechanical professional construction is ensured. Fig. 2 shows a comprehensive pipeline layout diagram of a corridor of a sunshine quaishan passenger station project through BIM software.
Selection of support and hanger forms:
through BIM typesetting, a support and hanger form is selected reasonably, and the support and hanger form can be selected by referring to a design fabricated support and hanger sample drawing.
On-site measurement and rechecking:
the method mainly carries out rechecking on the structural beam and the wall body, measures the actual net size, adjusts the comprehensive arrangement of the BIM pipelines, improves the arrangement precision and facilitates accurate blanking.
Calculating the type of the material:
and selecting proper section bars and connecting pieces by calculating the distance between the brackets and the borne load. The calculation process is as follows:
the shape selection of the channel cross arm is determined according to the bending section coefficient W, the bending section coefficient is only related to the shape and the size of the section, the section coefficient is used for describing the physical quantity of the section shape of the part, which is influenced by the stress, the bending moment, the torque and the like of the part, and is a section geometric parameter of mechanical parts and components, and the section geometric parameter is used for calculating the bending strength and the torsional strength of the part and the component or calculating the maximum stress on the section under the given bending moment or torque condition, namely the unit cm3；
M＝FL
Wherein F is the force acting on the cross section of the member and has the unit of N;
l is the distance from the action point to the bending moment calculation point, and the unit is m;
mmax is bending moment, which is one of the internal moments on the section of the stressed member, namely the resultant moment of the internal force system perpendicular to the cross section, the magnitude of the resultant moment is the algebraic sum of all external forces on the member part cut from the section to the centroid moment of the section, and the unit is N M;
σ max is the bending strength, and refers to the maximum stress that a material can withstand when it breaks under a bending load or reaches a predetermined bending moment, and this stress is the maximum positive stress at the time of bending, and is expressed in MPa (megapascals). It reflects the ability of a material to resist bending, which is a measure of the bending properties of the material. The engineering steel uses Q235, the yield strength value is 235MP, the bending resistance design strength value is 215 MP;
the bending normal stress is greatest at points in the cross-section furthest from the neutral axis. As can be seen from the formula, the maximum bending normal stress is in direct proportion to the bending moment and in inverse proportion to the bending section coefficient.
The weight calculation of the steel pipe, the bridge frame and the air pipe can be referred to the following table.
TABLE 1-1 Steel pipe Meter weight List
Table 1-2 bridge meter weight summary table
Tables 1-3 list of weights per square meter of rectangular galvanized steel sheet air pipes
And calculating by using the above formula to obtain sigma Mmax. The design bending stress sigma of the steel is 215MPa, in order to ensure the safety, the safety factor of 2.5 times is adopted for the bending moment, namely W is 2.5 sigma Mmax/215, the bending-resistant section coefficient is obtained, and the suitable type of the channel steel is found out according to a mechanical design manual.
In the field measurement and positioning, a first support position is measured by a steel tape, then the laser pay-off instrument is used for arranging and forming lines to determine the residual fixed points, a small cross is drawn on a structural beam or a shear wall by a marking pen, and a horizontal ruler and a line cone are used in a matching way to ensure the level and the verticality of support installation.
Determining a bracket:
through the steps, the form and the specification are determined, and the technical personnel can put forward the material dosage of the section bar, the connecting piece and the like for the bracket to form a material plan to be delivered to a manufacturer for production.
Factory production and construction machinery preparation:
the product is produced by a qualified and strong professional manufacturer, the quality and the supply capacity can be ensured, and necessary technical support is required to be provided. The factory production needs to master the production cycle in time and arrange constructors reasonably. The quality including the specification of section materials, the anticorrosion quality and the appearance of the materials are required to meet the requirements of relevant specifications and standards. The construction machinery is generally prepared by construction teams, the type of the cutter is required to be suitable for all specifications of section bars used on site, the hole digger, the pistol drill and the impact drill require various types of drill bits to be fully equipped, and the construction machinery needs to be prepared in place before materials enter a field so as to avoid delaying the construction progress.
On-site measurement and positioning:
measuring and paying off according to BIM comprehensive pipeline arrangement and support form selection: firstly, a steel tape measure is used for measuring the position of a first support, then a laser pay-off instrument is used for arranging in lines to determine the remaining fixed points, a small cross is drawn on a structural beam or a shear wall by a marking pen, and a horizontal ruler and a line cone are used in a matching mode to ensure the level and the verticality of the support installation.
Blanking and assembling:
the on-site blanking is mainly to cut the section bar, before blanking, the installation part must be checked again, and the section bar for the bracket is accurately cut according to the dimension determined by the BIM typesetting. Bolt holes are punched in the C-shaped steel commonly used for the light support before leaving a factory, the channel steel used for the heavy support needs to be punched on site according to pipeline positioning, a line in the center of a pipeline needs to be considered, and the bolt holes are positioned at different positions according to actual outer diameters. After the blanking is finished, accessories such as connecting pieces, bolts and the like with corresponding models are selected according to the design form of the bracket, and the accessories are conveyed to the installation part in batches and are orderly arranged.
Mounting a bracket:
the small-sized support can be installed in place at one time after ground assembly, and the heavy-duty support needs to be installed one by a dispersion piece like a combined support, and is sequentially installed and fixed from the stand column to the cross arm and from top to bottom. The installation process needs to pay attention to the following points:
(1) and mounting a bracket base: mounting the bottom expansion bolts on the side beams as far as possible according to the designed distance, and ensuring that the distance between the bottom expansion bolts and the beam bottom is not less than 15 cm; the base fixed on the floor slab is arranged to avoid the position of the embedded electric wire pipe.
(2) The installation process is mostly carried out on a scaffold or a lifting platform, high-altitude safety measures need to be made, workers fasten safety belts with themselves, and the workers are strictly prohibited to move the scaffold when standing on the scaffold.
Checking and accepting and adjusting:
the self-checking is carried out on the installed surface or the support of the system by a construction team, concentrated acceptance is carried out by project organization after the self-checking is qualified, acceptance records are filled after the acceptance is qualified, and the acceptance contents mainly comprise: support form, model, support interval and height, screw tightness, verticality and levelness. And (5) the unqualified part is modified to a qualified part, and the next procedure can be carried out.
Installing and fixing a pipeline:
the protection to the support should be paid attention to in the pipeline installation process, avoid the pipeline directly to pull on the support and destroy the support.
The materials and the main construction equipment are as follows:
TABLE 2-1 general list of main tools for construction of assembled support and hanger
| Serial number | Device name | Specification and model | Unit of | Number of |
| 1 | Cutting machine | 355 | Table (Ref. Table) | 4 |
| 2 | Pistol drill | J1Z-TCT10 | Table (Ref. Table) | 8 |
| 3 | Impact drill | Z516 | Table (Ref. Table) | 6 |
| 4 | Hole digger | CH100 | Table (Ref. Table) | 5 |
| 5 | Laser pay-off instrument | LS626 | Table (Ref. Table) | 2 |
| 6 | Steel coilRuler | 3m/5m | Handle | 10 |
| 7 | Horizon rule | 02434 | Handle | 10 |
| 8 | Vernier caliper | MNT-150 | |
2 |
| 9 | Spanner | Handle | 30 |
TABLE 2-2 Main materials List
The support and hanger form and its corresponding material application description are shown in fig. 3-8:
firstly, a single-rod movable hanger: it is suitable for the installation of water supply and drainage, fire control and spraying pipelines. As shown in fig. 3, comprises an anchor bolt 1, a flange nut 2, a C-shaped connecting piece 3, a screw rod 4 and a tube bundle 5.
II, fixing the hanger by a single rod: it is suitable for the installation of water supply and drainage, fire control and spraying pipelines. As shown in fig. 4, the anchor bolt comprises an anchor bolt 1, a gasket 2, a hexagon nut 3, a C-shaped steel base 4, an outer hexagon bolt 5, C-shaped steel 6, a C-shaped steel lock catch 7, a tube bundle 8 and an end cover 9.
Thirdly, moving the bracket: it is suitable for installing wind pipe, bridge frame and water pipe. As shown in figure 5, the anchor bolt comprises an anchor bolt 1, a C-shaped connecting piece 2, a screw rod 3, a flange nut 4, a C-shaped steel buckle plate 5 and C-shaped steel 6.
Fourthly, fixing a support: it is suitable for installing wind pipe, bridge frame and water pipe. As shown in fig. 6, the anchor bolt comprises an anchor bolt 1, a gasket 2, a nut 3, an outer hexagon bolt 4, a C-shaped steel lock catch 5, a C-shaped steel base 6, a C-shaped steel 7, an angle connecting piece 8 and an end cover 9.
And fifthly, the combined support (adjusted according to actual pipeline arrangement) comprises a channel steel base 1, a connecting piece 2, a bottom end connecting piece 3 and channel steel 4 as shown in fig. 7.
Sixthly, the single pipe bracket is suitable for water pipes which are within 300mm of the wall surface and below DN150, and the distance or the increase of the steel pipes needs to be reinforced by an inclined strut. As shown in fig. 8, the anchor bolt comprises an anchor bolt 1, a gasket 2, a nut 3, a tube bundle 4, an outer hexagon bolt 5, a C-shaped steel lock catch 6, a bracket 7 and an end cover 8.
In the construction of the project, the sunshine quaishan passenger station project uses the following main materials: the galvanized iron sheet is 39570m2, the total number of water supply and drainage, fire fighting, spraying and air conditioning water pipelines is 88640m, and the bridge is 16880 m.
And (3) comparing and calculating the number of the actually used labor force of the project: 10 persons are manufactured and installed on the air pipe support hanger, 34 persons are manufactured and installed on the water pipe support hanger (6 persons for air conditioning water, 7 persons for water supply and drainage, 21 persons for fire fighting and spraying), and 7 persons are manufactured and installed on the bridge support hanger; and calculating the daily processing speed on the premise that the construction machine meets the use requirement. Through measurement and comparison, the construction period of a finished product support and hanger manufactured by the method is saved by 46 days compared with that of a traditional support and hanger manufactured and installed under the same conditions (people, materials and machines), and the cost of the finished product support and hanger is saved by 34 ten thousand yuan compared with that of the traditional support and hanger.
The sunshine city Qushan comprehensive passenger station and the matched engineering are located at the office of the Qushan street in sunshine city in Shandong province. South Chang Lu (204 national road) is west, high-speed railway is east, Shanghai Lu is north, and Liuzhou Lu is south. Project construction scale: the total building area is 11 square meters, wherein the long-distance passenger station building area is 15612.42 square meters; building area of a house for passengers to stay overnight and drivers and passengers is 19740.47 square meters; the building area of outdoor general space and underground space is 76309.87 square meters. The system consists of three monomers, a viaduct and a comprehensive pipe gallery, wherein the three monomers comprise a long-distance passenger station, a passenger and driver and passenger room and an underground space. The engineering water supply and drainage, fire fighting, electric and ventilation air conditioning system is comprehensive, pipelines are more, finished product combined supports are adopted in places where the pipelines such as corridors and pipe galleries are concentrated, the trend is reasonably arranged, materials are saved, the space is also saved, a single finished product support is adopted in other areas, the construction progress is accelerated, the construction period is shortened, good social reverberation is achieved, and the approval and the goodness of owners are obtained.
The culture center engineering of the langevin district in the sunshine city is located at the intersection of the langevin district in the langevin city and the sea state road, is the largest cultural facility building in the langevin district, is also a local landmark engineering, and has a total building area of 4.8 square meters. The culture center consists of five venues including a culture hall, a science and technology center, a library, a museum and an urban and convention center, the engineering is started in 2013 and 15 days in 3 and 2016 and completed in 9 and 30 days in 2016, and the assembled finished product support crane is fully applied to water supply and drainage, fire protection, spraying and ventilation air-conditioning systems, and becomes a local sample engineering after completion.
The present invention can be easily implemented by those skilled in the art from the above detailed description. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the basis of the disclosed embodiments, a person skilled in the art can combine different technical features at will, thereby implementing different technical solutions.
In addition to the technical features described in the specification, the technology is known to those skilled in the art.
Claims (10)
1. The design and construction integrated construction method of the complex pipeline comprehensive support system is characterized in that all electromechanical full-professional pipelines are optimally arranged by a BIM technology, the installation position and elevation of the pipelines are determined, and the installation position and the support form of a support are determined;
and (3) calculating the support materials by constructors according to the BIM drawing, processing the support materials in a factory according to a material plan to manufacture an assembled finished product, and performing assembled installation by field constructors according to BIM typesetting and design.
2. The integrated construction method for designing and constructing the complex pipeline comprehensive supporting system according to claim 1, characterized in that the construction process of the method is as follows:
1) optimizing a drawing and comprehensively arranging pipelines;
2) selecting a support and hanger form through BIM typesetting;
3) measuring the actual net size, and adjusting the comprehensive arrangement of BIM pipelines;
4) calculating the type of the materials, and selecting proper section bars and connecting pieces through the calculation of the distance between the brackets and the borne load;
5) determining a bracket, determining the form and specification of the bracket, and forming a material plan to deliver to a manufacturer for production;
6) the manufacturer produces and prepares the construction machinery;
7) on-site measurement and positioning, measurement and paying-off are carried out according to BIM comprehensive pipeline arrangement and support form selection,
8) blanking and assembling, and accurately cutting the sectional material for the bracket according to the size determined by the BIM typesetting;
9) mounting a bracket;
10) checking, accepting and adjusting, wherein the finished support of one surface or one system is subjected to self-checking and centralized checking, and unqualified supports are modified;
11) and installing and fixing the pipeline.
3. The integrated construction method for design and construction of the complex pipeline comprehensive support system according to claim 2, wherein the drawing optimization and the comprehensive pipeline arrangement comprise the steps of performing comprehensive pipeline typesetting on main parts by using BIM software, and determining the installation positions and elevations of various professional pipelines, wherein the main parts comprise a corridor, a pipe gallery, a machine room, a roofing equipment layer, a pipe shaft, a guest room entrance hall and a toilet;
and determining the form of the support and hanger by using BIM software, and performing auxiliary blanking through the BIM row plate.
4. The integrated construction method for design and construction of the complex pipeline comprehensive support system according to claim 1, 2 or 3, characterized in that the calculation process for calculating the type of the materials is as follows:
determining the type selection of the channel steel cross arm according to the bending-resistant section coefficient W,
M＝FL
wherein F is the force acting on the member cross section;
l is the distance from the action point to the bending moment calculation point;
Mmaxthe bending moment is the resultant moment of an internal force system vertical to the cross section, and the magnitude of the resultant moment is the algebraic sum of all external forces on the component part intercepted by the cross section and the centroid moment of the cross section;
σmaxthe term "bending strength" refers to the maximum stress that a material can withstand when it breaks under a bending load or reaches a predetermined bending moment, and this stress is the maximum normal stress during bending.
5. The integrated construction method for the design and construction of the complex pipeline comprehensive support system according to claim 4, wherein Q235 is used as steel, the yield strength value is 235MP, and the bending strength value is 215 MP;
calculating sigma Mmax by the formula, wherein the bending moment is 2.5 times of safety coefficient, namely
W＝2.5∑Mmax/215
And obtaining the bending-resistant section coefficient, and selecting a proper channel steel type according to the bending-resistant section coefficient.
6. The integrated construction method for design and construction of the complex pipeline integrated support system according to claim 2, wherein the on-site measurement and positioning comprises the steps of firstly measuring a first support position by using a steel tape, then arranging and forming lines by using a laser pay-off instrument to obtain the remaining fixed points, drawing a small cross on the structural beam or the shear wall by using a marking pen, and matching and using a horizontal ruler and a line cone to ensure the horizontal and vertical installation of the support.
7. The integrated construction method for design and construction of the complex pipeline comprehensive supporting system according to claim 1 or 2, characterized in that the small-sized support is installed in place at one time after ground assembly; heavy support dispersion piece installs one by one, installs fixedly in proper order from stand to cross arm, from last down.
8. The integrated construction method for design and construction of the complex pipeline comprehensive support system according to claim 7, wherein the installation of the bracket bases is as close as possible to the side beams according to the designed spacing, and the distance between the bottom layer expansion bolts and the beam bottoms is not less than 15 cm; the base fixed on the floor slab should avoid the position of the embedded electric wire pipe when being installed.
9. The integrated construction method for the design and construction of the complex pipeline comprehensive support system according to claim 1 or 2, characterized in that all the supports are connected by bolts.
10. The integrated construction method for design and construction of the complex pipeline comprehensive support system according to claim 9, wherein the acceptance content comprises the form and the model of the support, the distance and the height between the supports, the screwing degree of screws, the verticality and the levelness.
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