CN112627405A - Curtain wall installation and construction method for variable cross-section track system - Google Patents
Curtain wall installation and construction method for variable cross-section track system Download PDFInfo
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- CN112627405A CN112627405A CN202011476350.7A CN202011476350A CN112627405A CN 112627405 A CN112627405 A CN 112627405A CN 202011476350 A CN202011476350 A CN 202011476350A CN 112627405 A CN112627405 A CN 112627405A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/88—Curtain walls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/04—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
- B66C13/08—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions
- B66C13/085—Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions electrical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F13/00—Common constructional features or accessories
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/14—Conveying or assembling building elements
- E04G21/16—Tools or apparatus
- E04G21/162—Handles to carry construction blocks
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- Civil Engineering (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- Conveying And Assembling Of Building Elements In Situ (AREA)
Abstract
The invention discloses a curtain wall installation and construction method of a variable cross-section track system, which comprises construction preparation, material entering, guide rail installation, trial operation, curtain wall hoisting, inspection acceptance and track dismantling, after the construction method is adopted, operators do not need to excessively approach to the adjacent edge for operation, the falling risk is reduced, the advantage of high hoisting speed of a winch is utilized to hoist a unit type curtain wall plate to an installation position and convert the curtain wall plate to a track of the track system, an electric hoist erected on the track is utilized to carry out in-place installation, the electric hoist on the track can freely move on the track, the problem that one plate needs to move once when being installed by a traditional hoisting process tool is solved, the construction efficiency is improved, the curtain wall is convenient and fast, the curtain wall is stacked on a ground hoisting point of the track system after entering, and then sequentially installed and circularly hoisted, and the curtain wall plate does not need to be transported, the workload of workers is small.
Description
Technical Field
The invention relates to the technical field of curtain wall construction, in particular to a curtain wall installation construction method of a variable cross-section track system.
Background
The glass curtain wall is a building outer protective structure or decorative structure which has a certain displacement capacity relative to the main structure by a supporting structure system and does not bear the action of the main structure. The wall body has two types of single-layer glass and double-layer glass. The glass curtain wall is a beautiful and novel building wall decoration method and is a remarkable characteristic of modern high-rise building times;
under the more and more mature environment of the building industry, people also put forward higher requirements on the building art while meeting the stability of the building function and structural design, and the art and the building are integrated as a whole and are taken as the key development direction for beautifying the city. In order to highlight the building shape, the variable cross section of the building often occurs, but due to the change of the cross section, the traditional curtain wall installation needs to arrange and move a lifting machine and a hanging basket for many times, so that the operation is complicated, and the efficiency is low;
in addition, the traditional curtain wall is complex and dangerous in manual operation, the materials enter the field in a mess mode, and the manual workload is large;
therefore, a curtain wall installation construction method of the variable cross-section track system is provided.
Disclosure of Invention
The invention aims to provide a curtain wall installation and construction method of a variable cross-section track system, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a curtain wall installation construction method of a variable cross-section track system comprises the following steps:
1) installing a guide rail:
1.1, carrying out embedded parts and placing, positioning and paying off according to the main structure construction and track design requirements;
1.2, placing embedded parts according to the construction progress of the main body structure, and placing the embedded parts according to paying-off when the main body structure is bound with steel bars and a template is installed;
1.3, processing related I-steel and steel through materials according to the figure according to the track requirement;
1.4, completing the installation of a track skeleton, the welding work and the steel rope drawing work according to the requirements of a drawing, wherein the track position and the bearing capacity meet the requirements of the hoisting and transportation of a curtain wall unit body, and performing the paying-off positioning of a track cantilever support arm and an upper hanger by using a total station according to the drawing; the rail needs to be bent at the corner, the radius of the bent arc in the 18# I-steel shaft is 700mm, and the arc length is as follows: 1100 mm; the cantilever steel bracket is installed, the front support is reliably connected and fixed with the main structure beam or plate, the rear support is reliably anchored in a tensile manner with the main structure beam or plate, and a tensile bolt is not less than 2M16 and penetrates and is fixed with the plate; the cantilever steel bracket has independent stability so that the cantilever steel bracket does not generate front-back left-right displacement shaking; the straightness of the track is not more than +/-10 mm; the rails are butted, and one end of a connecting plate is not less than 2M16 fastening bolts; the rail is connected with the steel bracket in an overhanging way, and the end head and the middle section of the rail are not less than 2M16 tension bolts; an electric hoist is firmly installed on the running track through suspension, and the contact area of the bearing walking wheel and the lower flange of the hanger rail is not less than 95% of the effective stress area;
1.5, after the installation of the track skeleton is finished, measuring the level and the straightness of the track by using a measuring instrument and adjusting and checking the size deviation measured and found by the measuring instrument;
1.6, after the full welding is finished, performing full welding work on the track skeleton, performing process control, and performing self-checking and supervision related acceptance on the tested track equipment;
2) test run:
3) hoisting a curtain wall: the construction floor of the curtain wall unit plate is arranged in a mounting sequence, the mounting sequence is from left to right, from bottom to top, layer by layer, in sequence and in insertion mounting, in the mounting process, the unit plate is connected with a hook of a hoisting winch, a steel wire rope is hung, and the hoisting winch is slowly started after the wind-proof buckle is mounted, so that the unit plate is hoisted along a cableway, the hoisting speed and weight are controlled, and the connecting metal corner connectors of the curtain wall framework upright column are connected with other connecting pieces by bolts;
4) and (4) dismantling the track.
Preferably, in the step 2), in the test operation, after the walking hoist required to be used is installed, the installed walking hoist is debugged; after the track is installed, performing trial operation, wherein the trial operation load is 1.5 times larger than the actual hoisting load; whether the whole operation process is normal is checked in the test hoisting detection, and all parts of the annular track are checked in a static state after being lifted 100mm away from the ground.
Preferably, after the I-steel and the steel tube material mounted on the guide rail are processed, the anti-rust paint is finished before welding.
Preferably, the connecting metal corner connectors of the curtain wall framework columns are connected with other connecting pieces by bolts, and anti-loosening measures are provided, and the variety, specification and color of the metal materials and accessories for the curtain wall meet the specification requirements; the verticality of the curtain wall meets the following requirement that when the height of the curtain wall is less than or equal to 30m, the allowable deviation is 10 mm; when the height of the curtain wall is more than 30m and less than or equal to 60m, the allowable deviation is 15 mm; when the height of the curtain wall is more than 90m, the allowable deviation is 25 mm; the allowable deviation of the flatness of the curtain wall is 1.5mm, the allowable deviation of the straightness of a vertical seam is 2mm, the allowable deviation of the straightness of a transverse seam is 2mm, the allowable deviation of the straightness of a spliced seam and a design value is 2mm, and the allowable deviation of the height difference of a seam between adjacent glass is 1 mm.
Preferably, in the installation of the guide rail in the step 1, the position and the bearing capacity of the rail meet the requirements of hoisting and transporting the curtain wall unit body, and a total station is used for positioning the cantilever support arm of the rail and the upper hanger in a paying-off manner according to a drawing; the rail needs to be bent at the corner, the radius of the bent arc in the 18# I-steel shaft is 700mm, and the arc length is as follows: 1100 mm; the cantilever steel bracket is installed, the front support is reliably connected and fixed with the main structure beam or plate, the rear support is reliably anchored in a tensile manner with the main structure beam or plate, and a tensile bolt is not less than 2M16 and penetrates and is fixed with the plate; the cantilever steel bracket has independent stability so that the cantilever steel bracket does not generate front-back left-right displacement shaking; the straightness of the track is not more than +/-10 mm; the rails are butted, and one end of a connecting plate is not less than 2M16 fastening bolts; the rail is connected with the steel bracket in an overhanging way, and the end head and the middle section of the rail are not less than 2M16 tension bolts; an electric hoist is firmly installed on the running track through suspension, and the contact area of the bearing walking wheel and the lower flange of the hanger rail is not less than 95% of the effective stress area.
Preferably, when the local cleaning is carried out on the plate by using the alcohol or the toluene on site, the using process is strictly controlled, so that the cotton cloth which is not trickled, does not drip and is stuck with the alcohol or the toluene liquid is intensively recycled.
Preferably, when the annular rail in the step 4) is dismantled, the rail is dismantled by using a tower crane or a winch which is matched with the tower crane or the winch, the steel wire rope is tied on a reserved hoisting lug plate welded with the transverse I-steel, the other end of the steel wire rope is hung on a tower crane lifting hook or an anti-falling hook of the winch, then the connecting bolt of the transverse I-steel and the longitudinal I-steel is loosened, the I-steel is transferred to a specified position by the tower crane after the completion, and other transverse I-steels are dismantled in sequence; dismantling longitudinal I-steel, firmly hanging a tower crane lifting hook or a winch lifting hook and an I-steel reserved lifting lug plate, and loosening bolts fixed with the embedded parts and the structures in floors after stable connection is determined; dismantling a longitudinal steel wire rope; and dismantling the annular track I-shaped steel in sequence.
Compared with the prior art, the invention has the beneficial effects that:
1. when the curtain wall plate is installed, a circle of safety rope is arranged around the structure, an installer wears a safety belt to carry out field operation, and a winch lifts or sends the curtain wall plate to a specified floor position; the electric hoist on the movable track can move in a building and reach a designated position, a constructor only needs to rightly install and fix the electric hoist by virtue of force, and an operator does not need to excessively approach the adjacent side for operation, so that the falling risk is reduced;
2. the advantage that hoist engine lifting speed is fast is utilized, and unit curtain plate promotes the mounted position, converts to the rail system track, utilizes the electric hoist of erectting in the track to take one's place the installation. The electric hoist on the track can move freely on the track, so that the problem that the electric hoist needs to move once when one plate is installed on the traditional lifting process tool is solved, convenience and rapidness are realized, and the construction efficiency is improved;
3. after the curtain wall enters the field, the curtain wall is stacked on a ground hoisting point of a rail system, and is sequentially and orderly installed and circularly lifted, so that the curtain wall plates do not need to be transported and transferred for many times, and the workload of workers is small.
Drawings
FIG. 1 is an overall flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a curtain wall installation and construction method of a variable cross-section rail system is shown, and the construction method includes the following steps:
1) construction preparation: the construction preparation work is planned, stepped, staged and staged, and comprises technical preparation, field preparation, material preparation, personnel preparation and season preparation throughout the whole construction process;
2) entering a material field: after the materials enter the yard, the stored unit plates are stacked again according to a lifting plan, so that the number of stacked layers is not more than three, a forklift or a tower crane is used for transportation, the stacked unit plates are stacked according to the installation sequence at a lifting point under the command of a traffic worker, the traffic safety of a construction site is noticed during driving, and a discharge forklift or a tower crane discharges the materials according to the requirement of the command worker;
3) installing a guide rail:
3.1, placing, positioning and paying off the embedded part according to the main structure construction and track design requirements;
3.2, placing embedded parts according to the construction progress of the main body structure, and placing the embedded parts according to paying-off when the main body structure is subjected to reinforcement and formwork installation;
3.3, processing related I-steel and steel through materials according to the drawing according to the track requirement;
3.4, completing the installation and welding work of the track skeleton and the steel rope drawknot work according to the requirements of a drawing;
3.5, after the track skeleton is installed in the step D, measuring the level and the straightness of the track by using a relevant measuring instrument to ensure that the track can be normally transported and used, and adjusting and checking relevant size deviation found by measurement;
3.6, after the full welding is finished, performing full welding of the track skeleton, performing process control in the process, and performing self-checking and supervision related acceptance on the tested track equipment;
the track system mainly comprises three parts of an operation track, a winch and an electric hoist. The method comprises the steps that track installation embedded parts are preset when main structure beam plates are poured, the position of the embedded parts is consistent with the position required by a drawing, before curtain wall installation, guide rails are installed and organized and accepted around a roof layer plate surface or a floor plate surface with a changed cross section according to engineering conditions, when the curtain wall is installed, a winch is used for lifting curtain wall unit plates to an installation floor from a ground fixed lifting point, then the curtain wall unit plates are conveyed to the installation position through a traveling electric hoist, the electric hoist returns to the curtain wall lifting position after workers finish installation and fixation, and the steps are repeated until the installation is finished;
4) test run:
4.1, after the walking hoist required to be used is installed, debugging the installed walking hoist to ensure that the walking hoist can safely and stably operate;
4.2, after the track is installed, trial operation is required, and the trial operation load is larger than 1.5 times of the actual hoisting load;
4.3, checking whether the whole operation process is normal in the test hoisting detection, and checking each part of the annular track in a static state at 100mm away from the ground after hoisting;
4.4, during hoisting, people are prohibited to enter the lower part of the operation area, and a protection mark is required to be made, and a special person is arranged for nursing; carrying out formal lifting after no condition exists, carrying the machine by hand to idle for one circle before starting, checking each part and a brake to start after confirming no error;
5) hoisting a curtain wall: the construction floors of the curtain wall unit plates are arranged in an installation sequence, the installation sequence is from left to right, from bottom to top, and is inserted and installed layer by layer and in sequence, in the installation process, the unit plates are connected with a hook of a hoisting winch, a steel wire rope is hung, and the hoisting winch is slowly started after the wind-proof buckles are installed, so that the unit plates are slowly lifted along a cableway, and the lifting speed and the weight are strictly controlled; when the unit plates are vertically transported to an installation layer, the electric hoist hooks on the annular track transfer and lift the plates to stress, then the lifting hooks and the cable wind ropes of the original winch are removed, the unit plates are horizontally transferred to an installation position by the track device, and then an installation technician carries out indoor stacking adjustment, positioning and installation of the unit bodies; the construction quality standard of the glass curtain wall is controlled;
6) dismantling a track:
6.1, when the annular rail is dismantled, a tower crane or a winch is used, after the preparation work is ready, the tower crane or the winch is matched with the dismantling rail, a steel wire rope is tied on a reserved hoisting lug plate welded with the transverse I-shaped steel, the other end of the steel wire rope is hung on a tower crane hook or an anti-falling hook of the winch, then a connecting bolt of the transverse I-shaped steel and the longitudinal I-shaped steel is loosened, the I-shaped steel is dispatched to a specified position by the tower crane after the completion, and other transverse I-shaped steels are dismantled in sequence;
6.2, dismantling the longitudinal I-steel, firmly hanging a tower crane lifting hook or a winch lifting hook and an I-steel reserved lifting lug plate, and loosening a bolt fixed with the embedded part and the structure in a floor after the stable connection is determined;
6.3, finally, dismantling the longitudinal steel wire rope;
6.4, dismantling the annular track I-steel in sequence according to the steps.
And (3) finishing the anti-rust paint before welding after finishing the machining of the I-shaped steel and the steel tube material in the step 3.3 of installing the guide rail.
The curtain wall construction quality standard comprises the following steps: the variety, specification and color of the metal material and the accessories for the curtain wall are in accordance with the standard requirements; the verticality of the curtain wall meets the following requirement that when the height of the curtain wall is less than or equal to 30m, the allowable deviation is 10 mm; when the height of the curtain wall is more than 30m and less than or equal to 60m, the allowable deviation is 15 mm; when the height of the curtain wall is more than 90m, the allowable deviation is 25 m; the curtain wall flatness tolerance is 1.5 mm. The allowable deviation of the straightness of the vertical seams is 2mm, the allowable deviation of the straightness of the transverse seams is 2m, the allowable deviation of the straightness of the abutted seams and a design value is 2mm, and the allowable deviation of the height difference of the seams between adjacent glass is 1 mm.
And 3, in the installation of the guide rail in the step 3, the position and the bearing capacity of the rail meet the requirements of hoisting and transporting the unit body of the curtain wall. Using a total station to carry out paying-off positioning on the track cantilever support arm and the upper hanger according to a drawing, and carrying out track installation work after checking no error; the rail needs to be bent at the corner, the radius of the bent arc in the 18# I-steel shaft is 700mm, and the arc length is as follows: 1100 mm; the cantilever steel bracket is installed, and the front support seat must be reliably connected and fixed with the main structure beam or plate. The rear support seat must have reliable tensile anchorage with the main body beam or plate, and the tensile bolts must not be smaller than 2M 16. And is fixed with the plate in a penetrating way; the cantilever steel bracket must have independent stability and must not generate displacement shaking all around; the straightness of the track is not more than +/-10 mm; the rails are butted, and one end of a connecting plate is not less than 2M16 fastening bolts; the rail is connected with the steel bracket in an overhanging way, and the end head and the middle section of the rail are not less than 2M16 tension bolts; the electric hoist on the running track is installed and must be firmly suspended, and the contact area of the bearing walking wheel and the lower flange of the hanger rail is not less than 95% of the effective stress area. The walking device runs flexibly and turns smoothly and naturally.
In the construction, construction is strictly carried out according to safety measures, and the safety measures comprise:
A. the construction responsible person must carry out the education of safe production to the worker, strengthen legal system concept and improve the worker's safe production ideological consciousness and self-protection ability, and the conscious obeys the safety discipline, safety production system, obeys the safety production management.
B. All construction and management personnel must strictly adhere to the safety production discipline and wear and use the labor protection supplies correctly.
C. The construction scheme and the technology are carried out seriously to meet the requirements. The construction responsible personnel must check the implementation situation of specific constructors, and regularly supervise and instruct to ensure the construction safety.
D. The 'three post-on-duty' and 'one-speaking' activities are made according to the regulations, namely, the activities of post-on-duty bottom making, post-on-duty checking, post-on-duty recording and week safety evaluation activities are made, the safety activities, the safety fire prevention and the life sanitation of a construction site are checked regularly, and the relevant records of the checking activities are made.
E. Before working, mechanical equipment, tools, ropes and seat plates must be checked carefully, and the safety belt is free from damage, so that the working operation can be carried out under the conditions of good mechanical performance and no abnormal phenomenon of various tools.
F. The operation rope and the safety rope need to be separately rooted and tightly tied, a soft object needs to be additionally arranged at the position close to the edge to prevent the rope from being broken due to abrasion, the lower end of the rope must be in contact with the ground, and a person who puts the rope needs to tie a temporary safety rope at the same time.
G. Before going on duty, a constructor wears a work clothes and a safety helmet, fastens a safety belt, a safety lock and a shackle, and fastens the seat plate buckle.
H. When the auxiliary tool is operated by a worker, the auxiliary tool needs to be firmly tied to prevent people from being injured by falling, and meanwhile, the auxiliary tool is prevented from being used for playing and carrying other irrelevant objects; upstairs and ground guardians need to be firmly on a construction site to practically perform duties, observe the tightness of the operating rope and the safety rope and the phenomena of rope twisting and rope stringing at any time, find out a problem report and eliminate the problem report.
I. When a constructor is about to land, the constructor needs to firstly observe the ground and wall facilities, the positioning of the operation rope and the safety rope and the pedestrian flow, and slowly descends until the constructor is on the ground after agreeing after the ground guardian finishes processing and adjusting.
J. The high-altitude operators forbid the operation with diseases, the construction site forbids the operation after drinking, and the heatstroke prevention and cooling work is done in high-temperature weather.
K. An anemoscope is erected during hoisting, hoisting is forbidden when wind power exceeds 6 grades or thunderstorm occurs, enough illumination must be ensured during hoisting at night, and components cannot be suspended overnight. Before hoisting, hoisting commands need to carefully check whether the hoisting tool meets the specification requirements and whether the hoisting tool is damaged, and all hoisting commands and operators need to be certified to work on duty.
When the local cleaning is carried out on the plate by using the alcohol or the toluene on site, the use process needs to be strictly controlled, so that the plate does not flow or drip, and the cotton cloth stuck with the alcohol and the toluene liquid is subjected to centralized recovery treatment; the waste generated by curtain wall construction needs to be properly treated to prevent environmental pollution; the packaging paper, the packaging rope, the packaging bag and the on-site leftover bits and pieces which are disassembled in the construction process need to be recovered uniformly and stored in a closed designated place, and a specially-assigned person is responsible for recovering the leftover bits and pieces regularly and processing the recyclable leftover bits and pieces separately.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A curtain wall installation and construction method of a variable cross-section track system is characterized by comprising the following steps: the construction method comprises the following steps:
1) installing a guide rail:
1.1, carrying out embedded parts and placing, positioning and paying off according to the main structure construction and track design requirements;
1.2, placing embedded parts according to the construction progress of the main body structure, and placing the embedded parts according to paying-off when the main body structure is bound with steel bars and a template is installed;
1.3, processing related I-steel and steel through materials according to the figure according to the track requirement;
1.4, completing the installation of a track skeleton, the welding work and the steel rope drawing work according to the requirements of a drawing, wherein the track position and the bearing capacity meet the requirements of the hoisting and transportation of a curtain wall unit body, and performing the paying-off positioning of a track cantilever support arm and an upper hanger by using a total station according to the drawing; the rail needs to be bent at the corner, the radius of the bent arc in the 18# I-steel shaft is 700mm, and the arc length is as follows: 1100 mm; the cantilever steel bracket is installed, the front support is reliably connected and fixed with the main structure beam or plate, the rear support is reliably anchored in a tensile manner with the main structure beam or plate, and a tensile bolt is not less than 2M16 and penetrates and is fixed with the plate; the cantilever steel bracket has independent stability so that the cantilever steel bracket does not generate front-back left-right displacement shaking; the straightness of the track is not more than +/-10 mm; the rails are butted, and one end of a connecting plate is not less than 2M16 fastening bolts; the rail is connected with the steel bracket in an overhanging way, and the end head and the middle section of the rail are not less than 2M16 tension bolts; an electric hoist is firmly installed on the running track through suspension, and the contact area of the bearing walking wheel and the lower flange of the hanger rail is not less than 95% of the effective stress area;
1.5, after the installation of the track skeleton is finished, measuring the level and the straightness of the track by using a measuring instrument and adjusting and checking the size deviation measured and found by the measuring instrument;
1.6, after the full welding is finished, performing full welding work on the track skeleton, performing process control, and performing self-checking and supervision related acceptance on the tested track equipment;
2) test run:
3) hoisting a curtain wall: the construction floor of the curtain wall unit plate is arranged in a mounting sequence, the mounting sequence is from left to right, from bottom to top, layer by layer, in sequence and in insertion mounting, in the mounting process, the unit plate is connected with a hook of a hoisting winch, a steel wire rope is hung, and the hoisting winch is slowly started after the wind-proof buckle is mounted, so that the unit plate is hoisted along a cableway, the hoisting speed and weight are controlled, and the connecting metal corner connectors of the curtain wall framework upright column are connected with other connecting pieces by bolts;
4) and (4) dismantling the track.
2. The installation and construction method of the curtain wall of the variable cross-section track system according to claim 1, characterized in that: in the step 2), debugging the mounted walking hoist after the walking hoist required to be used is mounted in the test operation; after the track is installed, performing trial operation, wherein the trial operation load is 1.5 times larger than the actual hoisting load; whether the whole operation process is normal is checked in the test hoisting detection, and all parts of the annular track are checked in a static state after being lifted 100mm away from the ground.
3. The installation and construction method of the curtain wall of the variable cross-section track system according to claim 1, characterized in that: and finishing the work of the antirust paint before welding after the I-shaped steel and the steel tube material arranged on the guide rail are processed.
4. The installation and construction method of the curtain wall of the variable cross-section rail system according to claim 3, characterized in that: the connecting metal corner connectors of the curtain wall framework columns are connected with other connecting pieces by bolts, and anti-loosening measures are provided, and the variety, specification and color of metal materials and accessories for the curtain wall meet the standard requirements; the verticality of the curtain wall meets the following requirement that when the height of the curtain wall is less than or equal to 30m, the allowable deviation is 10 mm; when the height of the curtain wall is more than 30m and less than or equal to 60m, the allowable deviation is 15 mm; when the height of the curtain wall is more than 90m, the allowable deviation is 25 mm; the allowable deviation of the flatness of the curtain wall is 1.5mm, the allowable deviation of the straightness of a vertical seam is 2mm, the allowable deviation of the straightness of a transverse seam is 2mm, the allowable deviation of the straightness of a spliced seam and a design value is 2mm, and the allowable deviation of the height difference of a seam between adjacent glass is 1 mm.
5. The installation and construction method of the curtain wall of the variable cross-section rail system according to claim 3, characterized in that: in the installation of the guide rail in the step 1, the position and the bearing capacity of the rail meet the requirements of hoisting and transporting the unit body of the curtain wall, and a total station is used for positioning the cantilever support arm of the rail and the upper hanger in a paying-off manner according to a drawing; the rail needs to be bent at the corner, the radius of the bent arc in the 18# I-steel shaft is 700mm, and the arc length is as follows: 1100 mm; the cantilever steel bracket is installed, the front support is reliably connected and fixed with the main structure beam or plate, the rear support is reliably anchored in a tensile manner with the main structure beam or plate, and a tensile bolt is not less than 2M16 and penetrates and is fixed with the plate; the cantilever steel bracket has independent stability so that the cantilever steel bracket does not generate front-back left-right displacement shaking; the straightness of the track is not more than +/-10 mm; the rails are butted, and one end of a connecting plate is not less than 2M16 fastening bolts; the rail is connected with the steel bracket in an overhanging way, and the end head and the middle section of the rail are not less than 2M16 tension bolts; an electric hoist is firmly installed on the running track through suspension, and the contact area of the bearing walking wheel and the lower flange of the hanger rail is not less than 95% of the effective stress area.
6. The installation and construction method of the curtain wall of the variable cross-section rail system as claimed in claim 4, wherein: when the local cleaning is carried out on the plate by using the alcohol or the toluene on site, the using process is strictly controlled, so that the plate does not flow or drip, and the cotton cloth stuck with the alcohol and the toluene liquid is intensively recycled.
7. The installation and construction method of the curtain wall of the variable cross-section track system according to claim 1, characterized in that: when the annular rail is dismantled in the step 4), a tower crane or a winch is utilized, the rail is dismantled by the aid of the cooperation of the tower crane or the winch, a steel wire rope is tied on a reserved hoisting lug plate welded with the transverse I-steel, the other end of the steel wire rope is hung on a tower crane lifting hook or an anti-falling hook of the winch, then the transverse I-steel and the longitudinal I-steel connecting bolt are loosened, the I-steel is dispatched to a specified position by the tower crane after the transverse I-steel and the longitudinal I-steel are completed, and other transverse I-steels; dismantling longitudinal I-steel, firmly hanging a tower crane lifting hook or a winch lifting hook and an I-steel reserved lifting lug plate, and loosening bolts fixed with the embedded parts and the structures in floors after stable connection is determined; dismantling a longitudinal steel wire rope; and dismantling the annular track I-shaped steel in sequence.
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| CN202011476350.7A CN112627405A (en) | 2020-12-15 | 2020-12-15 | Curtain wall installation and construction method for variable cross-section track system |
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Cited By (1)
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