CN217652289U - Cantilever truss pushing platform for upper construction of super high-rise building - Google Patents

Abstract

The utility model discloses a super high-rise building upper portion construction is with truss top pushing platform of encorbelmenting, include: the system comprises a plurality of groups of main cantilever support space trusses, secondary cantilever support space trusses, corner cantilever support space trusses and support structures; the supporting space truss that encorbelments of multiunit owner is assembled the setting respectively at interval and is being encorbelmented the truss and push away the south side of platform place floor, north side, east side and west side, and push away through thrustor's a lot of and reach outside distance of encorbelmenting, adjacent two sets of supporting space trusses that encorbelment are through encorbelmenting supporting space truss connection once, and the truss that encorbelments of the position connection bight of four angles that the truss pushed away the platform, make the supporting space truss that encorbelments mainly, the supporting space truss that encorbelments once, the supporting space truss structure that encorbelments of bight is whole supporting space truss structure that encorbelments. The utility model discloses a truss top that encorbelments pushes away platform dead weight is light, torsional strength is big, bearing capacity is high to realized more span, the more encorbelment of bearing.

Description

Cantilever truss pushing platform for upper construction of super high-rise building

Technical Field

The utility model relates to a super high-rise building enclosure system construction technical field that encorbelments, concretely relates to super high-rise building upper portion construction is with truss top pushing platform and assembly method of encorbelmenting.

Background

In order to meet the requirements of modeling design and propaganda, the upper parts of a plurality of high-rise or super high-rise buildings are provided with overhanging structures, and the curtain wall is provided with a large LED screen, but the LED screen has the problem of aging after being used for a long time. Particularly, when the super high-rise building located in the core zone of a city is only transformed or dismantled, and the lower floor still normally operates, the construction of an outer facade enclosure system needs to be carried out on the upper part of the super high-rise building due to high requirements on appearance or confidentiality and high construction risk coefficient, more construction operations on the edge and high safety protection difficulty.

When the exterior elevation enclosure system is constructed, because the appearance of the building is provided with an overhanging structure which protrudes outwards, firstly, an overhanging construction platform needs to be built on a floor with the elevation of more than 100 meters, and the overhanging construction platform is used as an aerial bearing platform of the exterior elevation enclosure system. The construction of the cantilever construction platform requires a cantilever space truss structure which can simultaneously meet the requirements of super-length and overweight, so that the self-weight is light, the torsional strength is high, and the bearing capacity is high.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information constitutes prior art already known to a person skilled in the art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a super high-rise building upper portion construction is with truss top pushing platform of encorbelmenting to solve the problem that proposes in the above-mentioned background art.

In order to achieve the purpose, the utility model provides an overhanging truss pushing platform for the upper part construction of a super high-rise building, which is arranged on a certain floor on the upper part of the super high-rise building, the outer vertical surface of the super high-rise building is used for carrying out construction enclosure on a plurality of floors above the floor where the overhanging truss pushing platform on the upper part of the super high-rise building is arranged, and at least one side of the top of the super high-rise building is provided with an outward overhanging structure; truss top of encorbelmenting pushes away platform includes: the system comprises a plurality of groups of main cantilever support space trusses, secondary cantilever support space trusses, corner cantilever support space trusses and support structures; wherein, a plurality of groups of main overhanging support space trusses are respectively assembled and arranged at intervals at the south side, the north side, the east side and the west side of the floor where the overhanging truss pushing platform is positioned, and reach outward overhanging distance through multiple pushing of the pushing device, two adjacent groups of main overhanging support space trusses are connected through the secondary overhanging support space truss, the positions of four corners of the overhanging truss pushing platform are connected with a corner overhanging support space truss, so that the main overhanging support space truss, the secondary overhanging support space truss and the corner overhanging support space truss are constructed into an integral overhanging support space truss structure; the supporting structure is arranged at the bottom of the overall cantilever supporting space truss structure and comprises a plurality of groups of split heads, a first structural column bracket and a second structural column bracket; the truss unit transportation system comprises a vertical transportation channel and an in-floor transportation system.

In a preferred embodiment, the super high-rise building top south and north sides have outward overhanging structures, and the overhanging distance of north side is greater than the south side overhanging distance, and the main overhanging support space truss who is located south side includes: the cantilever support space truss, the pushing lengthening space truss and the connection truss are arranged on the outermost side of the cantilever truss pushing platform, the outer end face of the cantilever support space truss is cantilevered to extend out of the outer frame column of the original structure, the outer end face of the pushing lengthening space truss is connected with the inner end face of the cantilever support space truss in a splicing mode, and the outer end face of the connection truss space truss is connected with the inner end face of the pushing lengthening space truss in a splicing mode.

In a preferred embodiment, the cantilever supporting space truss comprises two upper truss chords arranged in parallel and two lower truss chords arranged in parallel, a plurality of truss connecting rods are arranged between the two upper truss chords and the two lower truss chords in parallel and are respectively perpendicular to the upper truss chords and the lower truss chords, and a plurality of first truss connecting rods arranged in a triangular structure and a plurality of second truss connecting rods arranged vertically are arranged between the upper truss chord and the lower truss chord on one side.

In a preferred embodiment, the number of each group of first structural column brackets is two, the two first structural column brackets are symmetrically fixed on two sides of an outer frame column of an original structure along the horizontal direction and are located at the bottom of a main overhanging support space truss, an overhanging support space truss is slidably supported on the first structural column brackets and a horse stool, the number of each group of second structural column brackets is two, the two second structural column brackets are symmetrically arranged on one side of a core cylinder column of the original structure along the vertical direction, a single truss between columns is arranged between the two second structural column brackets, and after the overhanging support space truss and the jacking extension space truss are sequentially pushed to the right position, the space truss connecting truss is fixedly connected with the single truss between columns.

In a preferred embodiment, the first structural column corbel and the second structural column corbel are identical in structure, comprising: the glide plane steel sheet that the level set up, its front contacts with main cantilever bracing space truss bottom, its back parallel arrangement has two vertical steel sheets, two vertical steel sheets respectively with original structure outline column or original structure core section of thick bamboo post welded connection, and vertical steel sheet is mutually perpendicular with the glide plane steel sheet, the glide plane steel sheet is provided with the anti rib that slides of curb plate along length direction one side both ends symmetry, two anti ribs that slide of curb plate are mutually perpendicular with the glide plane steel sheet, and the card locates the both sides border of original structure outline column or original structure core section of thick bamboo post, be provided with first anti sidesway rib between two vertical steel sheets, the outside of vertical steel sheet is provided with the anti rib that sidesways of second.

In a preferred embodiment, the length of the pushing lengthened space truss is smaller than that of the cantilever support space truss, the length of the pushing lengthened space truss is smaller than the maximum pushing length of the pushing device, and the length of the connecting truss is smaller than that of the pushing lengthened space truss.

In a preferred embodiment, perpendicular transportation entrance to a cave is seted up to truss top of encorbelmenting push platform place floor one side, and it is linked together with perpendicular transport corridor, and the transportation system hangs the track including setting up the single track of twice annular that the top in this floor hangs the track with the single track of straight line to transport the component that the perpendicular transportation entrance to a cave got off to assembling the position.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses mainly to the problem that the conventional measure of encorbelmenting can't satisfy the requirement, dig and abandon the I-steel roof beam that the tradition scaffold frame of encorbelmenting used, utilize the space truss dead weight light, torsional strength is big, characteristics that bearing capacity is high, undertake the load that scaffold frame or other materials were piled up, and in the super high-rise building of frame-core section of thick bamboo structure system, can also be through the mode of being connected space truss and core section of thick bamboo, and push away many times through the design space truss and push away and slide and splice, finally realize the bigger span of space truss, what bear more encorbelments greatly.

Drawings

Fig. 1 is an overall schematic view of a super high-rise building according to a preferred embodiment of the present invention.

Fig. 2 is a schematic structural view of the overhanging truss pushing platform according to the preferred embodiment of the present invention.

Fig. 3-4 are schematic diagrams of the cantilever truss pushing platform side main cantilever supporting space truss pushing process according to the preferred embodiment of the present invention.

Fig. 5 is the schematic diagram of the installation completion of the overhanging truss pushing platform side main overhanging support space truss pushing of the preferred embodiment of the present invention.

Fig. 6 is a plan view of a first (second) structural column corbel of a preferred embodiment of the present invention.

Fig. 7 is a first (second) structural column corbel elevation view of a preferred embodiment of the present invention.

Fig. 8 is a schematic view of the arrangement of the overturn preventing device according to the preferred embodiment of the present invention.

Fig. 9 is a schematic elevation view of the overturn preventing device according to the preferred embodiment of the present invention.

Fig. 10 is a schematic view of a partial arrangement of the pushing node according to the preferred embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below. The embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative work, all belong to the protection scope of the present invention.

Example 1

Following is to specific right of the whole construction project that reforms transform of certain super high-rise building upper portion super high-rise scope the utility model discloses carry out detailed introduction, as shown in fig. 1, this super high-rise building above ground part is nearly 200m high, for steel frame + core tube structure system, the utility model discloses preferred embodiment's super high-rise building upper portion construction is with truss top pushing platform 201 that encorbelments sets up at a certain floor on super high-rise building upper portion (the elevation reaches more than 120 m), and super high-rise building outer facade is enclosed 200 and is used for encorbelmenting truss top pushing platform a plurality of floors more than the floor and is under construction the enclosure, and this super high-rise building top both sides all have outside cantilever structure 100, and wherein south side outside cantilever distance is 4.8m, and north side outside cantilever distance is 6.2m. The purpose of arranging the overhanging truss pushing platform 201 is to provide a rooting point for an outer facade protection system, improve the appearance effect of the outer facade in the construction process of a building, provide protection for the construction of the building above a floor by adopting the assembled outer facade enclosure 200, and ensure that the following floor can normally work and operate in the construction process. Truss top pushing platform 201 encorbelments is apart from this floor 304 about 800mm, and the outside relies on welded first structure post bracket 302 to fix on original structure frame post 221, and the distance of first structure post bracket top elevation apart from this floor 304 is 800mm, and intermediate position uses split heads 301 to support, and on the rear portion was fixed in core section of thick bamboo steel column 222, the outside was encorbelmented all around. Wherein, the east-west overhang size is 2320mm, the south overhang size is 6825mm, the north overhang size is 8525mm.

Specifically, as shown in fig. 1-8, the cantilever truss pushing platform 201 of the present invention comprises: a plurality of sets of primary cantilevered support space truss 211, secondary cantilevered support space truss 212, corner cantilevered support space truss 213, and support structures. Wherein, the support space truss 211 of encorbelmenting of multiunit owner is assembled the setting at the south side of encorbelmenting truss top pushing platform place floor respectively at the interval, north side, east side and west side to pushing away through thrustor 305's a lot of and reaching outside distance of encorbelmenting, adjacent two sets of support space trusses 211 of encorbelmenting are connected through support space truss 212 of encorbelmenting once, and the truss of encorbelmenting pushes away the position connection bight of four angles of platform 201 and encorbelments support space truss 213, make support space truss 211 of encorbelmenting once, support space truss 213 constructs for the support space truss structure of encorbelmenting once. The support structure is arranged at the bottom of the main cantilever support space truss 211 and is used for supporting the cantilever support space truss.

Further, the super high-rise building top south and north both sides have structure 100 of encorbelmenting outward, and the distance of encorbelmenting of north side is greater than the distance of encorbelmenting of south side, and the main support space truss 211 of encorbelmenting that is located south side includes: the cantilever supporting space truss 211a, the pushing lengthening space truss 211b and the connecting truss 211c are arranged on the outermost side of the cantilever truss pushing platform, the outer end face of the cantilever supporting space truss 211a is cantilevered to extend out of the outer frame column 221 of the original structure, the outer end face of the pushing lengthening space truss 221b is connected with the inner end face of the cantilever supporting space truss 221a in a splicing mode, and the outer end face of the connecting truss space truss 221c is connected with the inner end face of the pushing lengthening space truss 221b in a splicing mode.

Further, the cantilever support space truss 211a includes two parallel arrangement truss upper chords 231 and two parallel arrangement truss lower chords 232, a plurality of truss connecting rods are arranged between the two truss upper chords 231 and the two truss lower chords 232 in parallel, the truss connecting rods are respectively perpendicular to the truss upper chords 231 and the truss lower chords 232, and a plurality of first truss connecting tie rods 233 arranged in a triangular structure and a plurality of second truss connecting tie rods 234 arranged vertically are arranged between the truss upper chord 231 and the truss lower chord 232 on one side.

Further, the supporting structure includes multiunit split heads 301, first structure post bracket 302 and second structure post bracket 303, and the quantity of every first structure post bracket 302 of group is two, and two first structure post brackets 301 are fixed in the both sides of original structure outer frame post 221 along the horizontal direction symmetry to be located the main bottom of encorbelmenting support space truss 211, during the top pushes up the installation, and the main support space truss 211 of encorbelmenting is propped to locate on first structure post bracket 302 and split heads 301 slidable. The first structural column corbel 302 serves to transfer the overall load of the main cantilevered support space truss down onto the original structural outer frame column 221. The number of each group of second structural column brackets 303 is two, the two second structural column brackets 303 are symmetrically arranged on one side of the original structural core cylindrical column 222 along the vertical direction, a single truss 211d between columns is arranged between the two second structural column brackets 303, and after the overhanging supporting space truss 211a and the pushing extension space truss 211b are sequentially pushed in place, the connecting truss space truss 211c is fixedly connected with the single truss 211d between columns. At this time, the second structural column bracket 303 functions as a single truss between fixed columns 211d, and transmits the support reaction force of the entire cantilever support space truss to the original structural core column 222. The single truss between columns 211d is welded in the factory, and is composed of an upper chord, a lower chord, and a connecting rod.

Further, the first structural column bracket 302 and the second structural column bracket 303 are identical in structure and comprise: the level setting glide plane steel sheet 401, its front and the main supporting space truss bottom that encorbelments contact, its back parallel arrangement have two vertical steel sheet 402, two vertical steel sheet 402 respectively with original structure outer frame post 221 or original structure core shank 222 welded connection, and vertical steel sheet 402 is mutually perpendicular with glide plane steel sheet 401, and vertical steel sheet 102 is used for assuming vertical power. The steel plate 401 of the slip surface is symmetrically provided with lateral plate anti-slip ribs 403 along two ends of one side of the length direction, the two lateral plate anti-slip ribs 403 are perpendicular to the steel plate 401 of the slip surface, the two lateral plate anti-slip ribs are clamped on two side edges of the original structure outer frame column 221 or the original structure core cylinder column 222, a first anti-lateral-movement rib 404 is arranged between the two vertical steel plates, the outer side of the vertical steel plate 402 is provided with a second anti-lateral-movement rib 405, and the horizontal force in the pushing process of the truss can be offset by the arrangement of the lateral plate anti-slip ribs 403, the first anti-lateral-movement rib 404 and the second anti-lateral-movement rib 405.

Further, the lengths of the cantilever supporting space truss 211a, the pushing extension space truss 211b and the connecting truss 211c need to be determined according to the field processing and transporting conditions and the pushing capability of the pushing device, and within the above requirements, the length of the pushing extension space truss 211b should be as long as possible to reduce the pushing times. Preferably, the length of pushing elongated space truss 211b is less than the length of cantilevered support space truss 211a, the length of pushing elongated space truss 211b is less than the maximum pushing length of pushing device 305, and the length of connecting truss 211c is less than the length of pushing elongated space truss 211 b.

Further, still include truss unit transportation system, truss unit transportation system includes transport system in perpendicular transport corridor and the floor, encorbelments truss top and pushes away that 201 place floor one side has seted up perpendicular transportation entrance to a cave, and it is linked together with perpendicular transport corridor to transport the component that gets off perpendicular transportation entrance to assembling the position. The main maximum weight 4.1 tons after the space truss steel member that encorbelments segments, for guaranteeing that the member transports smoothly in this layer of horizontal transportation process, adopt the inner panel top of floor to set up the horizontal transportation track, use the single track to hang and transport, avoid the ground transportation. Preferably, the in-floor transportation system comprises two annular monorail crane tracks and a linear monorail crane track which are arranged at the top, and the problem that the south side adopts a 5-ton monorail crane to transport the components falling from the vertical transportation hole to the working position along the tracks is solved. The trolley is used for transporting from the center to the edge for transporting. The truss component is a single-piece segmented truss, after the truss component is horizontally conveyed to a position, the truss component is turned over by a manual monorail crane on the annular monorail crane track, the supporting position of the bottom of the truss is kept still in the turning-over process, the monorail crane moves along with the increase of the turning-over angle, and the suspension rigging is kept vertical until the truss component is vertical.

Example 2

The utility model discloses super high-rise building upper portion construction of still is with truss top pushing platform's assembly method of encorbelmenting, including following step:

s1, determining the setting position, the outward overhanging distance and the overhanging truss pushing platform structure of an overhanging truss pushing platform for the upper construction of a super high-rise building;

s2, dismantling a structure in the height range of the floor cantilever truss pushing platform provided with the cantilever truss pushing platform;

s3, setting a vertical transportation channel and a transportation system in a floor;

s4, arranging a supporting structure and a pushing device at the assembling position;

and S5, sequentially carrying out transportation, assembly, pushing and fixed connection on the trusses from the south side, the east side, the west side and the north side of the overhanging truss pushing platform respectively until the overhanging truss pushing platform is installed in place and reaches a preset overhanging distance, and enabling the main overhanging supporting space truss, the secondary overhanging supporting space truss and the corner overhanging supporting space truss to be constructed into an integral structure.

Further, in step S5, transport, assembly, top pushing and fixed connection of truss are carried out in proper order respectively from the south side, east side, west side, the north side of encorbelmenting truss top pushing platform, push up the installation of platform and take one' S place until encorbelmenting truss top pushing platform to reach and predetermine the distance of encorbelmenting, and make main support space truss, the support space truss of encorbelmenting once, the support space truss structure of encorbelmenting in bight include as an integral structure following step:

and S51, hoisting and conveying the truss unit to an installation floor of the overhanging truss pushing platform through a vertical conveying channel by using a hoisting device, and conveying the truss unit to a south-side assembling position by using an in-floor conveying system, wherein the truss unit is a single-piece segmented truss, after the truss member is horizontally conveyed to a position in place, the truss member is turned over by using a manual monorail crane on an annular monorail crane track, the supporting position of the bottom of the truss is kept still in the turning-over process, the monorail crane moves along with the increase of the turning-over angle, and the suspension cable is kept vertical until the truss member is vertical. First structure post bracket 302 and second structure post bracket 303 are welded on original steel construction frame post 221, original structure core section of thick bamboo post 222, and first structure post bracket 302 and second structure post bracket 303 are accomplished at the mill welding preparation, transport to the scene after install on original structure frame post 221 and original structure core section of thick bamboo post 222. Then, the prefabricated inter-column single trusses 221d are placed on the second structural column brackets 303, the respective inter-column single trusses 221d are integrated by welding the upper and lower chords, the inter-column single trusses 221d are welded in a factory and are composed of the upper chords, the lower chords, and the tie rods, and the inter-column single trusses function to transmit the support reaction force of the space truss to the original structural core column.

And S52, after the truss units are horizontally transported to the assembling position, sequentially assembling and connecting the cantilever support space truss 211a in an assembling mode from the middle to two sides, wherein the length of the cantilever support space truss is 11.2m. After the multiple groups of overhanging support space trusses 211a are assembled, one end of each overhanging support space truss is placed on the first structure column bracket structure 302 fixed on the outer frame column 221 of the original structure, and the other end of each overhanging support space truss is placed on the split heads 301 and serves as a jig frame for pushing and sliding the overhanging support space trusses 211a to the outside.

Step S53, one end of each pushing device 305 is fixed on a core column 222 of the original structure to serve as an acting point, the other end of each pushing device is connected with the inner end face of the overhanging support space truss 221a through a standard joint dowel bar 306, each pushing device on the south side is synchronously controlled through a control center to simultaneously push out a length of one pushing lengthened space truss 221b outwards, and pushing is carried out for 3.7m;

and S54, when the space truss to be overhung is pushed out of the outer frame column area and does not exceed the floor area, installing the first cantilever space truss at the corner of the southeast corner, the first cantilever space truss at the outer side of the southwest corner, the second cantilever space truss at the corner of the second corner and the first secondary cantilever space truss between two adjacent cantilever space trusses 221a at the outer side of the outer frame column of the original structure, and connecting the cantilever space trusses into a whole.

And S55, splicing, connecting and pushing the lengthened space truss 221b, wherein the splicing length is 5.2m. The outer end face of the pushing and lengthening space truss 221b is connected with the inner end face of the overhanging support space truss 221a, the pushing and lengthening space truss 221b is placed on the split heads 301, one end of a pushing device 305 is fixed on the original structural core column 222 to serve as an acting point, the other end of the pushing device is connected with the inner end face of the pushing and lengthening space truss 221b through a standard joint force transmission rod 306, the pushing devices on the south side are synchronously controlled to push one connecting truss 221c outwards through a control center, and pushing is carried out for 3.1 m.

And S56, mounting the second-pass overhanging support space truss and a third corner overhanging support space truss outside the southeast corner and the southwest corner.

And S57, assembling the connecting truss 221c, wherein the assembling length is 3.5m, and fixedly connecting the two ends of the connecting truss with the pushing long-space truss 221b and the single truss between columns 221d respectively to form an integral stress system.

And S58, mounting the corner overhanging support space truss at the two extreme sides of the south side.

And S59, respectively installing truss structures on the east and west sides according to the direction from the south side to the north side, wherein the overhanging distance of the east and west sides is small, and the main overhanging space trusses on the east and west sides are formed by one-time assembling and are pushed once. It should be noted that the specific pushing times and the overhanging distance can be adjusted according to the actual construction requirements.

Step S60, completing installation of the north truss structure, specifically: the north main cantilever support space truss can be divided into four sections, the first section of the main cantilever support space truss is assembled to be 12.9 meters long, and after the assembly is completed, a pushing device 305 is used for pushing to push for 3.8 meters. And in the pushing process, when the main overhanging support space truss pushes out of the outer frame column region and does not exceed the floor slab region, assembling the secondary overhanging support space truss and the corner truss at the column position, and then continuing to perform pushing construction. And (3) assembling the next section of main cantilever support space truss, wherein the assembling length is 4.5m, and after the assembling is finished, pushing is carried out by adopting a pushing device for pushing by 3m. And in the pushing process, when the truss is pushed out of the column area and does not exceed the floor area, assembling the secondary cantilever support space truss at the column position, and then continuing to perform pushing construction. And (5) assembling the next section of main cantilever support space truss, wherein the assembling length is 2.9m. And after the assembly is finished, pushing again by using a pushing device for 1.8m. And in the pushing process, when the main overhanging support space truss pushes out of the outer frame column region and does not exceed the floor region, assembling the secondary overhanging support space truss at the column position, and then continuing to perform pushing construction. And the fourth assembling length of the main overhanging supporting space truss on the north side is 1.8 meters, and the in-situ assembling is carried out, so that the installation of the overhanging truss pushing platform is finally completed. And finally, arranging a plurality of groups of diagonal draw bars outside the truss structures on the north and south sides respectively, fixedly connecting the hoops with the structural columns, and connecting the ends of the diagonal draw bars with the hoops by pin shafts.

Example 3

In a preferred embodiment, as shown in fig. 8-9, during the pushing process, a situation that the overhanging moment is larger than the indoor moment may occur, so the anti-overturning device 801 needs to be arranged inside, considering that the truss always slides during pushing, the top of the anti-overturning device 801 is provided with a connecting cross beam 805, the connecting cross beam 805 is fixedly connected with the original beam 802 through an L-shaped connecting gusset plate 806, the bottom of the connecting cross beam 805 is provided with a connecting square pipe short column 807, the bottom of the connecting square pipe short column 807 is provided with a steel wheel support 808, a steel wheel 803 is arranged in the steel wheel support 808, and the steel wheel 803 rolls on the truss upper flange 804 and reserves a gap of 20mm as an adjustment amount.

Further, regarding the pushing process and the node design, it should be noted that: the cantilever truss pushing platform is pushed by a numerical control hydraulic pushing device. As shown in fig. 10, the force application point of the north-south hydraulic thruster is arranged on the steel column of the core barrel (the first thrusting force application point 1001 shown in fig. 10), and the platform is pushed out by the standard joint dowel bar 306 without increasing length in the thrusting process. The acting points of the thrusters on the east and west sides are arranged on the outer frame column of the original structure (the second thrusting acting point 1002 shown in fig. 10), and the thrusting acting points at the corner positions of the north and south sides adopt a mode of arranging a buried plate structure steel upright column on the floor slab of the original structure and installing a steel corbel on the steel upright column as the acting point of the thrusters (the third thrusting acting point 1003 shown in fig. 10). The first pushing force application point 1001 is a connecting lug plate arranged on the front face of the core steel column, the connecting lug plate is fixedly connected with the pushing device, the second pushing force application point 1002 is a connecting lug plate arranged on the side portion of the outer frame column of the original structure, the connecting lug plate is fixedly connected with the pushing device, and the third pushing force application point 1003 is a steel corbel structure arranged on the steel column of the structure.

Furthermore, the thrusters are numerical control hydraulic thrusters, the acting points of the numerical control hydraulic thrusters on the south side and the north side are respectively arranged on the core cylinder of the original structure, and the east and west sides adopt a mode of arranging the embedded plates and the steel corbels on the floor slab of the original structure as the acting points of the numerical control hydraulic thrusters.

Further, it is right below that the utility model discloses hydraulic system synchro control explains in detail:

1. slip synchronous control strategy

The hydraulic slip synchronous control should meet the following requirements:

(1) Ensuring that each oil cylinder is uniformly loaded as much as possible;

(2) And each sliding pushing point is ensured to be synchronous as much as possible.

2. Preparation and inspection before push-off and slide

Before the structure pushes away to slide, reply system and the auxiliary assembly that slides and carry out comprehensive inspection and debugging work:

1) Checking whether the joints of all valves or hard pipes on the pump station are loosened or not, and checking whether the pressure regulating spring of the overflow valve is in a completely loosened state or not.

2) And checking whether the connection of the cable between the pump station starting cabinet and the oil cylinder is correct or not.

3) And checking whether the oil pipe connection between the pump station and the oil cylinder main oil cylinder is correct or not.

4) And (5) the system is powered on, and whether the rotation direction of the main shaft of the hydraulic pump is correct or not is checked.

5) And under the condition that the pump station is not started, corresponding buttons in the control cabinet are manually operated to check whether the actions of the electromagnetic valve and the stop valve are normal or not and whether the serial number of the stop valve corresponds to the serial number of the oil cylinder or not.

6) Check sensors (stroke sensor, displacement sensor).

7) Checking before slippage: the pump station is started, certain pressure (about 5 Mpa) is adjusted, and the telescopic oil cylinder: checking whether the oil pipe connection of the cavity A and the cavity B is correct or not; checking whether the stop valve can stop the corresponding oil cylinder or not; and checking whether the frequency converter can accelerate or decelerate the telescopic speed of the corresponding oil cylinder when the current changes.

8) Preloading: the pressure (2-3 Mpa) is adjusted to make the wedge-shaped clamping blocks in basically the same locking state.

3. Pushing slip process quality control

(1) Staged loading glide

And starting formal slippage after the system detects no error. And calculating to determine the cylinder extending pressure (considering pressure loss) and the cylinder retracting pressure required by the oil cylinder.

When the sliding starts, the cylinder extending pressure of the oil cylinder is gradually increased to 20% and 40% of the required pressure, and under all normal conditions, the oil cylinder can be continuously loaded to 60%,80%,90% and 100%.

When the sliding unit is about to move, the sliding propulsion is suspended, and the pressure of the propulsion system is kept. The oil cylinder, the equipment system and the structural system are comprehensively checked, and the pushing and sliding can be continued under the condition that the stability and the safety of the whole structure are confirmed to be absolutely free.

(2) Formal slip

In the hydraulic sliding process, the pressure, the load change condition and the like of the equipment system are observed, and the recording work is carefully done.

The pump source pressure value is preset according to the design sliding load, so that the maximum output thrust of the oil cylinder is controlled, and the safety of the whole sliding facility is ensured.

When the sliding unit slides, the horizontal direction basically has no horizontal force, the stress of the sliding way under the sliding working condition (considering 5 percent of horizontal force) is calculated to be safe, the sliding unit is provided with a horizontal stop block corresponding to the position of the sliding way, and the whole sliding process is safe and reliable.

The oil cylinder is a hydraulic system, and the starting acceleration and the stopping acceleration of the oil cylinder are almost zero through flow control, so that the impact force on the slide way is very small.

In the sliding process, the working states of a sliding slideway, an oil cylinder, a hydraulic pump source system, a computer synchronous control system, a sensing detection system and the like need to be closely noticed.

(3) Synchronous monitoring control scheme for slip process

1. And setting the maximum jacking force of each oil cylinder in a computer synchronous control system according to the counter force value of each jacking point under the sliding jacking working condition obtained by calculation in advance. When the jacking force exceeds a set value, the oil cylinder automatically adopts overflow unloading to prevent the jacking point load from being seriously unevenly distributed to cause damage to a structure or temporary facilities.

2. Through the self-locking device and the mechanical self-locking system arranged in the hydraulic circuit, when the oil cylinder stops working or meets the conditions of power failure and the like, the sliding slideway can be automatically locked for a long time, and the safety of the sliding truss is ensured.

3. Setting a sensing monitoring system

Acquiring position information of the main oil cylinder through stroke sensing detection;

acquiring jacking force information of each jacking point through oil pressure sensing detection;

obtaining the running state of the motor through the feedback of a motor starting signal;

obtaining the working state of the valve through the feedback of an electric signal obtained by the electromagnetic valve;

and (3) obtaining the flow (pushing speed) of the system through the feedback of a current signal of the proportional valve.

4. Computer control system

The computer network system remotely, real-timely and reliably reflects the feedback and control signals to a human-computer interface of a central control room: displaying the current system running state and parameters (such as oil cylinder state, synchronous displacement and load oil pressure), and recording historical data and curves (such as propulsion speed, synchronous precision, pushing point load and other time history curves); the operator will, by clicking on the computer human interface: setting an operation state, starting a pump source motor, switching a control mode, adjusting a propelling speed and suspending a propelling process; the computer control system automatically checks communication data, corrects communication error codes, changes a control algorithm, optimizes control parameters and corrects synchronization precision; the sensing and detecting information of the hydraulic synchronous control system is mutually redundant, and the operation control signals are mutually locked, so that the safe, reliable, efficient and convenient modern practical equipment is formed.

5. In the sliding process, the synchronism and the sliding state of the sliding are monitored visually, 50mm is taken as the minimum sliding unit during initial sliding, and the sliding way is marked and numbered. And in the sliding process, the deviation condition of each control monitoring point relative to the scale on the slide way is observed at any time, the sliding state is accurately known at any time, and the record is made. If the synchronous deviation is found to be large, adjustment is carried out immediately, the adjustment is carried out by carrying out inching control on a single oil cylinder, analyzing initial slip record data, reporting and reviewing the record data by a project master and a monitoring unit engineer, analyzing the record data reason in detail and carrying out corresponding adjustment in the subsequent slip construction process. If the initial slip state is good, the scale unit of the slip slideway can be properly enlarged to be used as the synchronous monitoring control basis in the whole slip process.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various 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. The utility model provides a super high-rise building upper portion construction is with truss top pushing platform that encorbelments which characterized in that: the cantilever truss pushing platform is arranged on a certain floor at the upper part of the super high-rise building, the outer vertical surface enclosure of the super high-rise building is used for carrying out construction enclosure on a plurality of floors above the floor where the cantilever truss pushing platform at the upper part of the super high-rise building is located, and at least one side of the top of the super high-rise building is provided with an outward cantilever structure;

truss top of encorbelmenting pushes away the platform and includes: the system comprises a plurality of groups of main cantilever support space trusses, secondary cantilever support space trusses, corner cantilever support space trusses, a support structure and a truss unit transportation system;

the main cantilever support space trusses are respectively assembled and arranged at the south side, the north side, the east side and the west side of a floor where the cantilever truss pushing platform is located at intervals, outward cantilever distances are achieved through multiple pushing of the pushing device, two adjacent groups of main cantilever support space trusses are connected through the secondary cantilever support space truss, the positions of four corners of the cantilever truss pushing platform are connected with the corner cantilever support space truss, and the main cantilever support space truss, the secondary cantilever support space truss and the corner cantilever support space truss are made to be of an integral cantilever support space truss structure;

the supporting structure is arranged at the bottom of the overall cantilever supporting space truss structure and comprises a plurality of groups of split heads, a first structural column bracket and a second structural column bracket;

the truss unit transportation system comprises a vertical transportation channel and an in-floor transportation system.

2. The cantilever truss pushing platform for upper construction of super high-rise buildings according to claim 1, which is characterized in that: super high-rise building top north-south both sides have outwards encorbelment structure, and the distance of encorbelmenting of north side is greater than the distance of encorbelmenting of south side, is located south side the main support space truss of encorbelmenting includes: the cantilever support space truss, the top is pushed away and is connect long space truss and connection truss, the support space truss setting of encorbelmenting is in the truss top pushes away the outside of platform, and the outer terminal surface of the support space truss of encorbelmenting is encorbelmented and is stretched out to the outer frame post outside of original structure, the top push away connect long space truss the outer terminal surface with the interior terminal surface concatenation of the support space truss of encorbelmenting is connected, connect truss space truss the outer terminal surface with the top pushes away the interior terminal surface concatenation of connecing long space truss and is connected.

3. The cantilever truss pushing platform for upper construction of super high-rise buildings according to claim 2, characterized in that: the cantilever supporting space truss comprises two truss upper chords arranged in parallel and two truss lower chords arranged in parallel, a plurality of truss connecting rods are arranged between the two truss upper chords and the two truss lower chords in parallel and are respectively perpendicular to the truss upper chords and the truss lower chords, and a plurality of first truss connecting rods arranged in a triangular structure and a plurality of second truss connecting rods arranged vertically are arranged between the truss upper chords and the truss lower chords on one side.

4. The cantilever truss pushing platform for upper construction of super high-rise buildings according to claim 3, characterized in that: every group the quantity of first structure post bracket is two, two first structure post bracket is followed the horizontal direction symmetry and is fixed in the both sides of original structure outer frame post, and is located the bottom of the main bearing space truss of encorbelmenting, main bearing space truss slidable ground of encorbelmenting is located and is set up on first structure post bracket and on the split heads, every group the quantity of second structure post bracket is two, two second structure post bracket sets up on one side of original structure core section of thick bamboo post along vertical direction symmetry, two be provided with single truss between the post between the second structure post bracket, encorbelment bearing space truss, top are connect long space truss and are pushed up in proper order and put in place the back, connect truss space truss and single truss fixed connection between post.

5. The cantilever truss pushing platform for upper part construction of super high-rise buildings according to claim 4, which is characterized in that: first structure post bracket and second structure post bracket structure are the same, include: the level set up the glide plane steel sheet, its openly with the support space truss bottom of mainly encorbelmenting contacts, and its back parallel arrangement has two vertical steel sheets, two vertical steel sheets respectively with original structure frame post or original structure core section of thick bamboo post welded connection, just vertical steel sheet with the glide plane steel sheet is mutually perpendicular, the glide plane steel sheet is provided with the anti rib that slides of curb plate, two along length direction one side both ends symmetry be provided with the anti rib that slides of curb plate with the glide plane steel sheet is mutually perpendicular, and the card locates the both sides border of original structure frame post or original structure core section of thick bamboo post, two be provided with first anti side between the vertical steel sheet and move the rib, the outside of vertical steel sheet is provided with the anti rib that moves of second side.

6. The cantilever truss pushing platform for upper construction of super high-rise buildings according to claim 2, characterized in that: the length of the jacking extension space truss is smaller than that of the cantilever support space truss, the length of the jacking extension space truss is smaller than the maximum jacking length of the jacking device, and the length of the connecting truss is smaller than that of the jacking extension space truss.

7. The cantilever truss pushing platform for upper part construction of super high-rise buildings according to claim 6, characterized in that: the vertical transportation portal is formed in one side of the floor where the overhanging truss pushing platform is located, the vertical transportation portal is communicated with the vertical transportation channel, and the transportation system in the floor comprises two annular monorail crane rails and one linear monorail crane rail which are arranged at the top in the floor, so that the components coming off from the vertical transportation portal are transported to the assembly position.

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