CN109812023A - A kind of truss sections accumulation lifting construction method of ladder work surface - Google Patents

A kind of truss sections accumulation lifting construction method of ladder work surface Download PDF

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Publication number
CN109812023A
CN109812023A CN201910118517.3A CN201910118517A CN109812023A CN 109812023 A CN109812023 A CN 109812023A CN 201910118517 A CN201910118517 A CN 201910118517A CN 109812023 A CN109812023 A CN 109812023A
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CN
China
Prior art keywords
truss
sections
floor
construction
ladder
Prior art date
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Pending
Application number
CN201910118517.3A
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Chinese (zh)
Inventor
游佳
沈培
鲍芳琳
钟启勇
闫治礼
尹国松
王彬
沈礼鹏
沈傲雪
陆夏
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Zhongjian First Group Construction Co Ltd
China Construction First Building Group Corp Ltd
Original Assignee
Zhongjian First Group Construction Co Ltd
China Construction First Building Group Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Zhongjian First Group Construction Co Ltd, China Construction First Building Group Corp Ltd filed Critical Zhongjian First Group Construction Co Ltd
Priority to CN201910118517.3A priority Critical patent/CN109812023A/en
Publication of CN109812023A publication Critical patent/CN109812023A/en
Pending legal-status Critical Current

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Abstract

The present invention relates to truss Lifting Technology fields, more specifically, it is related to a kind of truss sections accumulation lifting construction method of ladder work surface, its key points of the technical solution are that: a kind of truss sections accumulation lifting construction method of ladder work surface, comprising the following steps: assembled moulding bed step S1: is respectively set on the different ladder height floors of building;Step S2: truss loose mail is transported to each floor, and the different sections of truss are assembled on the assembled moulding bed of each floor;Step S3: the truss section on minimum floor is promoted at adjacent higher truss section, and two truss section connection is integral;Step S4: by overall increasing at the truss section on higher adjacent floor deck for connection, and another entirety is connected into;Step S5: repeating step S4, until all truss sections are closed up in high-altitude for a truss entirety;Step S6: truss is fixed in the truss integral lifting in step S5 to preset height.

Description

A kind of truss sections accumulation lifting construction method of ladder work surface
Technical field
The present invention relates to truss Lifting Technology field, in particular to the truss sections accumulation of a kind of ladder work surface mentions Rise construction method.
Background technique
With the fast development of construction industry, more and more large stadium classes building is continued to bring out, and such venue across Spend increasing, moulding becomes increasingly complex, and construction period is shorter and shorter, and execution conditions are more and more harsher.Piece truss selection mentions The mounting means risen, conventional promotion carry out whole mention after an opposed flattened assembled place is good whole truss structure assembly It rises.And part venue due to internal structure complexity, structure work surface is irregular and drop is big, and Large-scale Hoisting equipment can not march into the arena and hang Dress construction, there are following problems during truss installa-tion for such situation:
1, engineering structure is complicated and place limitation, Large-scale Hoisting equipment can not march into the arena, and truss can not carry out installation at high altitude construction;
2, structure flooring height difference is big, and sliding rail installation accuracy requires big, moulding bed stability control difficulty height;
3, it is in staged flooring that truss lower part view field flooring, which is big height difference, and it is very big that truss carries out the whole Pin assembly difficulty in ground. If it is assembled to carry out the whole Pin in ground, it is levelling that flooring different zones height difference need to be carried out with moulding bed, and to the stability of moulding bed, installation accuracy It is required that high.
Summary of the invention
In view of this, the present invention provides a kind of truss sections accumulation lifting construction method of ladder work surface, main purpose Be to solve it is existing when the building with ladder flooring carries out truss installa-tion construction, using the whole truss structure in ground it is assembled after it is whole The larger technical problem of the mode difficulty of promotion.
In order to achieve the above objectives, present invention generally provides following technical solutions:
The embodiment of the present invention provides a kind of truss sections accumulation lifting construction method of ladder work surface, for ladder The building of formula structure floor carries out truss installa-tion construction;The construction method the following steps are included:
Step S1: assembled moulding bed is respectively set on the different ladder height floors of building;
Step S2: truss loose mail is transported to each floor, and the different sections of truss are assembled on the assembled moulding bed of each floor;
Step S3: the truss section on minimum floor is promoted at adjacent higher truss section, and the two truss section is connected into One is whole;
Step S4: by overall increasing at the truss section on higher adjacent floor deck for connection, and another entirety is connected into;
Step S5: repeating step S4, until all truss sections are closed up in high-altitude for a truss entirety;
Step S6: truss is fixed in the truss integral lifting in step S5 to preset height.
By using above-mentioned technical proposal, because being using the stepped construction floor of building itself, in different ladders height Assembled moulding bed is respectively set on the floor of degree, is conducive to assembling and the precision controlling of moulding bed;Then it can be hung using kart Or tower crane carries out truss loose mail handling installation, avoids the whole Pin of truss or segmental hoisting, solves the problems, such as vertical transport;Relative to The mode integrally promoted after whole truss structure is assembled in the prior art, technical solution of the present invention utilize the stepped construction for building itself Each section of segmented assembly truss on each floor, then segmentation promoted and closed up in the sky as an entirety floor, for The mode of building with ladder flooring, the construction of this kind of truss installa-tion implements relatively more convenient.
The present invention is further arranged to: step S1 specifically:
The three-dimensional coordinate for extracting support and truss divides on the different ladder height floors of building according to the three-dimensional coordinate of extraction It She Zhi not assembled moulding bed.
By using above-mentioned technical proposal, it is ensured that the assembly precision of assembled moulding bed.
The present invention is further arranged to: " the different sections of assembled truss on the assembled moulding bed of each floor " are specific in step S2 Include:
Step S21: according to the practical floor situation in scene, model of slabs is established using software, according to model of slabs and aforementioned extraction Three-dimensional coordinate truss is segmented;
Step S22: according to the different sections of segmentation assembling part truss on the assembled moulding bed of each floor.
By using above-mentioned technical proposal, due to establishing model of slabs in software according to the practical floor situation in scene, so Truss is segmented according to the model afterwards, the segmentation accuracy of truss can be improved.
The present invention is further arranged to: between step S21 and step S22 further include:
Preassembling is simulated to each segmentation truss using simulation software, according to simulation result, the size of each segmentation truss is adjusted It is whole.
By using above-mentioned technical proposal, it can use the mechanism simulation module inside Creo three-dimensional software and carry out segmentation purlin The simulation preassembling of frame guarantees the precision of later period lifting construction for steel structure.
The present invention is further arranged to: before step S3 further include:
Hoisting frame is built, multiple lifters for being promoted to truss are disposed on hoisting frame.
By using above-mentioned technical proposal, lifter is unrestricted for lifting weight, span, area, just can guarantee Truss sections accumulation is carried out under this complex working condition to be promoted, and implements relatively more convenient.
The present invention is further arranged to: the reinforcing bar for being supported to lifter is additionally provided on hoisting frame.
The present invention is further arranged to: being controlled using control system multiple lifters;
The control system includes input unit, master controller and from controller;
It is described equal for multiple and with lifter quantity from the quantity of controller;
The input unit is used to be sent according to external input to the master controller and instruct;
The master controller by CAN bus with respectively connect from controller, the master controller be used for instruct based on the received to Respectively signal is sent from controller;
Respectively from controller based on the received signal control lifter opening and closing.
The present invention is further arranged to: being also monitored using sensor to the working condition of lifter.
By using above-mentioned technical proposal, realizes the independent real time monitoring to each hydraulic rockshaft in system and adjust It is whole, to improve the synchronism and safety of hydraulic pressure lift process.
The present invention is further arranged to: when two adjacent truss sections are to interface dislocation, thousand are also arranged on hoisting frame Jin top, jack is counter to push up any truss section to interface dislocation, makes the salty conjunction of docking of two adjacent truss sections, then carries out pair Connect welding.
The present invention is further arranged to: two adjacent truss sections are provided with reinforcing rod to interface.
By above-mentioned technical proposal, the truss sections of ladder work surface of the present invention accumulation lifting construction method at least have with It is lower the utility model has the advantages that
In the technical solution provided by the present invention, because being using the stepped construction floor of building itself, in different ladders height Assembled moulding bed is respectively set on the floor of degree, is conducive to assembling and the precision controlling of moulding bed;Then it can be hung using kart Or tower crane carries out truss loose mail handling installation, avoids the whole Pin of truss or segmental hoisting, solves the problems, such as vertical transport;Relative to The mode integrally promoted after whole truss structure is assembled in the prior art, technical solution of the present invention utilize the stepped construction for building itself Each section of segmented assembly truss on each floor, then segmentation promoted and closed up in the sky as an entirety floor, for The mode of building with ladder flooring, the construction of this kind of truss installa-tion implements relatively more convenient.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention, And can be implemented in accordance with the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention and the accompanying drawings.
Detailed description of the invention
Fig. 1 is a kind of truss sections accumulation lifting construction method for ladder work surface that one embodiment of the invention provides Flow chart;
Fig. 2 is a kind of distribution schematic diagram of the lifter of one embodiment of the invention offer on hoisting frame;
Fig. 3 is the first of the truss sections accumulation lifting construction method for a kind of ladder work surface that one embodiment of the invention provides Constructing structure schematic diagram;
Fig. 4 is the second of the truss sections accumulation lifting construction method for a kind of ladder work surface that one embodiment of the invention provides Constructing structure schematic diagram;
Fig. 5 is a kind of third of the truss sections accumulation lifting construction method for ladder work surface that one embodiment of the invention provides Constructing structure schematic diagram;
Fig. 6 is the 4 of the truss sections accumulation lifting construction method for a kind of ladder work surface that one embodiment of the invention provides Constructing structure schematic diagram.
Appended drawing reference: 1, lifter;2, hoisting frame;3, floor;4, assembled moulding bed;5, truss section.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.Base Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts it is all its His embodiment, shall fall within the protection scope of the present invention.
It is to be appreciated that if relating to directionality instruction (such as up, down, left, right, before and after ...) in the embodiment of the present invention, Then directionality instruction be only used for explain under a certain particular pose (as shown in the picture) between each component relative positional relationship, Motion conditions etc., if the particular pose changes, directionality instruction is also correspondingly changed correspondingly.
In addition, being somebody's turn to do " first ", " second " etc. if relating to the description of " first ", " second " etc. in the embodiment of the present invention Description be used for description purposes only, be not understood to indicate or imply its relative importance or implicitly indicate indicated skill The quantity of art feature." first " is defined as a result, the feature of " second " can explicitly or implicitly include at least one spy Sign.It in addition, the technical solution between each embodiment can be combined with each other, but must be with those of ordinary skill in the art's energy It is enough realize based on, will be understood that the knot of this technical solution when conflicting or cannot achieve when occurs in the combination of technical solution Conjunction is not present, also not the present invention claims protection scope within.
As shown in Figure 1, a kind of truss sections accumulation for ladder work surface that one embodiment of the present of invention proposes is promoted and is applied Work method, for carrying out truss installa-tion construction to the building with stepped construction floor 3.The construction method includes following step It is rapid:
Step S1: as shown in figure 3, assembled moulding bed 4 is respectively set on the different ladder height floors 3 of building.
Above-mentioned assembled moulding bed 4 is interim moulding bed, due to being that assembled moulding bed 4 is arranged in existing flooring, is conducive to moulding bed group Dress and precision controlling.
Step S2: it as shown in figure 3, transporting truss loose mail to each floor 3, is assembled on the assembled moulding bed 4 of each floor 3 The different sections of truss.
For having, can using kart hang or tower crane carry out the handling of truss loose mail installation, avoid the whole Pin of truss or Segmental hoisting solves the problems, such as vertical transport.
Step S3: as shown in figure 4, the truss section 5 on minimum floor 3 is promoted at adjacent higher truss section 5, and will The two truss section 5 connects integral.
Step S4: as shown in figure 5, overall increasing to connection at the truss section 5 on higher adjacent floor deck 3, and connect At another entirety.
Step S5: repeating step S4, until all truss sections 5 are closed up in high-altitude for a truss entirety;
Step S6: as shown in fig. 6, by the truss integral lifting in step S5 to preset height, truss is fixed.
The mode integrally promoted after whole truss structure is assembled in compared with the existing technology, technical solution of the present invention utilize building certainly The stepped construction floor of body is each section of segmented assembly truss on each floor 3, and then segmentation promoted and closed up in the sky For an entirety, for the building with ladder flooring, the mode of this kind of truss installa-tion construction implements relatively more convenient.Tool For body, using the stepped construction floor 3 of building itself, assembled moulding bed is respectively set on the floor 3 of different ladder heights 4, be conducive to assembling and the precision controlling of moulding bed;Then it can be hung using kart or tower crane carries out truss loose mail handling peace Dress, avoids the whole Pin of truss or segmental hoisting, solves the problems, such as vertical transport.
Further, aforementioned step S1 specifically: the three-dimensional coordinate for extracting support and truss is sat according to the three-dimensional of extraction Mark, is respectively set assembled moulding bed 4 on the different ladder height floors 3 of building, can so guarantee the assembling essence of assembled moulding bed 4 Degree.
" the different sections of assembled truss on the assembled moulding bed 4 of each floor 3 " specifically include in abovementioned steps S2:
Step S21: the case where according to live practical floor 3, establishing model of slabs using software, according to model of slabs and aforementioned mentions The three-dimensional coordinate taken is segmented truss.Software in this step S21 can deepen software for Takela.
Step S22: according to the different sections of segmentation assembling part truss on the assembled moulding bed 4 of each floor 3.
By above-mentioned setting, due to establishing model of slabs in software according to the practical floor situation in scene, then basis The model is segmented truss, and the segmentation accuracy of truss can be improved.
Further, between step S21 and step S22 further include: simulated using simulation software to each segmentation truss pre- Assembly is adjusted the size of each segmentation truss according to simulation result.
Specifically, can use the mechanism simulation module inside Creo three-dimensional software carry out segmentation truss simulation it is pre-splicing Dress guarantees the precision of later period lifting construction for steel structure.
Further, as shown in Fig. 2, before step S3 further include: build hoisting frame 2, be disposed on hoisting frame 2 more A lifter 1 for being promoted to truss.
In the examples described above, lifter 1 is unrestricted for lifting weight, span, area, just can guarantee complicated work herein Truss sections accumulation is carried out under condition to be promoted, and implements relatively more convenient.
After truss sections determine, lifter type selecting and positioning are carried out.Since flooring is stepped construction flooring, in addition to truss The setting of end two sides hydraulic rockshaft 1 is arranged in truss structure support position, inside sectional area hydraulic rockshaft 1 in main couple Chord member fitting end.It is promoted with midas and abaqus software compared with core after the completion of positioning, show whether maximum stress ratio is full Foot requires, and analyzes largest deformation amount, and carries out error reparation in the joint of each truss section 5 in later period practical lifting process. In component processing, by drawing actual size multi-processing 50mm surplus capacity, meet lifting process because of control errors caused by deformation.
Further, the reinforcing bar for being supported to lifter 1 is additionally provided on hoisting frame 2 above-mentioned.Specifically, Truss hoist point needs to carry out local stiffening after check, according to midas and abaqus software check result, in hoisting frame 2 Reinforcing bar is arranged in 1 installation site of lifter, and the specification of reinforcing bar need to be computed review, and length is fixed according to field lofting.Inside mentions It rises frame 2 to be arranged on main couple chord member, by way of compression bar is set below chord member, counter-force will be promoted and be transferred to concrete knot On structure.Due to promoting compression bar active position, the chord member of main couple is acted on by locally concentrated forces, and local bearing capacity is unsatisfactory for wanting It asks, it need to be by promoting compression bar corresponding position, setting stiffener in chord member, meanwhile, in chord member and compression bar connecting position is promoted, is increased If cover board, the measure for increasing the area of local compression guarantees the local bearing capacity of chord member.
It is aforementioned multiple lifters 1 to be controlled using control system.The control system may include input unit, Master controller and from controller.It is multiple and equal with the quantity of lifter 1 from the quantity of controller.Input unit is used for root It sends and instructs to master controller according to external input.Specifically, operating personnel can be sent by input unit to master controller Instruction.Master controller by CAN bus with respectively connect from controller, master controller be used for instructed based on the received to respectively from control Device sends signal.Respectively from controller based on the received signal control lifter 1 opening and closing.
Further, above-mentioned control system also uses sensor to be monitored the working condition of lifter 1.
In the examples described above, hydraulic lifting system is using hydraulic rockshaft 1 as lifting machinery, and flexible steel twisted wire is as load-bearing Rigging, hydraulic pump source system provide power, and access computer control system, are controlled using CAN bus and from master controller To the three class control of hydraulic rockshaft 1, the independent real time monitoring and adjustment to each hydraulic rockshaft 1 in system are realized, To improve the synchronism and safety of hydraulic pressure lift process.
Above-mentioned master controller and from controller can be microprocessor etc..
Further, reinforcing rod has can be set to interface in adjacent two truss sections 5.On the one hand, guarantee under being promoted The power of suspension centre can be assigned in entire truss, and stress is more reasonable;On the other hand, increase the constraint rigidity to interface, make structure In lifting process, excessive is unlikely to the vertical deformation of interface.
Wherein, when two adjacent truss sections 5 are to interface dislocation, also arrange that jack, jack are anti-on hoisting frame 2 Any truss section 5 to misplace to interface is pushed up, makes the salty conjunction of docking of two adjacent truss sections 5, then carries out docking welding.
The working principle of the invention and preferred embodiment is described below.
Using existing stepped construction flooring, interim assembled moulding bed 4 is set on different height floor 3.And it uses Takela deepens software and establishes model according to the practical floor situation in scene, extracts three-dimensional coordinate to support and truss.According to three-dimensional Coordinate makes interim assembled moulding bed 4, setting positioning plate, is segmented according to model of slabs and three-dimensional coordinate to truss.It utilizes Mechanism simulation module inside Creo three-dimensional software carries out the simulation preassembling of segmentation truss, guarantees later period lifting construction for steel structure Precision.Assembled moulding bed 4 is set in existing flooring, is conducive to moulding bed assembling and precision controlling, is hung using kart or tower crane Truss loose mail handling installation is carried out, the whole Pin of truss or segmental hoisting is avoided, solves the problems, such as vertical transport.
After truss sections determine, 1 type selecting of hydraulic rockshaft and positioning are carried out.Since flooring is stepped construction flooring, remove The setting of truss end two sides hydraulic rockshaft 1 exists in truss structure support position, the setting of inside sectional area hydraulic rockshaft 1 Main couple chord member fitting end.It is promoted with midas and abaqus software compared with core after the completion of positioning, obtains maximum stress ratio Whether meet the requirements, analyze largest deformation amount, and carries out error reparation at later period practical lifting process center tap.In component plus Working hour meets lifting process because of control errors caused by deformation by drawing actual size multi-processing 50mm surplus capacity.
Truss hoist point needs to carry out local stiffening after check, according to midas and abaqus software check result, is mentioning Reinforcing bar is arranged in 1 position of lifter for rising frame 2, and the specification of reinforcing bar need to be computed review, and length is fixed according to field lofting.It is internal Hoisting frame 2 is arranged on main couple chord member, by way of setting compression bar below chord member, will promote counter-force and is transferred to concrete knot On structure.Due to promoting compression bar active position, main couple chord member is acted on by locally concentrated forces, and local bearing capacity is unsatisfactory for wanting It asks, it need to be by promoting compression bar corresponding position, setting stiffener in chord member, meanwhile, in chord member and compression bar connecting position is promoted, is increased If cover board, the measure for increasing the area of local compression guarantees the local bearing capacity of chord member.
Hydraulic rockshaft 1 is unrestricted for lifting weight, span, area, just can guarantee and carries out under this complex working condition Truss sections accumulation is promoted.Hydraulic lifting system is using hydraulic rockshaft 1 as lifting machinery, and flexible steel twisted wire is as track cable Tool, hydraulic pump source system provide power, and access computer synchronous control and sensing and detecting system, use CAN bus control with And from master controller to hydraulic rockshaft 1 three class control, realize in system each hydraulic rockshaft 1 it is independent in real time Monitoring and adjustment, to improve the synchronism and safety of hydraulic pressure lift process.
During segmentation promotes abutting joint, guarantee merging precision requirement, reinforcing rod is being additionally arranged to interface position, one Aspect guarantees that the power for promoting lower suspension centre can be assigned in entire truss, and stress is more reasonable;On the other hand, increase to interface Rigidity is constrained, makes structure in lifting process, excessive is unlikely to the vertical deformation of interface.If being also difficult to the interface corrected, It can be used and tooling is set in chord member of truss position, instead push up with jack and be elevated structure, make the coincidence of mismatch position, then carry out pair Connect welding.
What needs to be explained here is that: in the absence of conflict, those skilled in the art can according to the actual situation by Relevant technical characteristic is combined with each other in above-mentioned each example, to reach corresponding technical effect, particularly for various combined situations It will not repeat them here.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (10)

1. a kind of truss sections of ladder work surface accumulate lifting construction method, for stepped construction floor (3) Building carries out truss installa-tion construction;It is characterized in that, the construction method the following steps are included:
Step S1: assembled moulding bed (4) are respectively set on the different ladder height floors (3) of building;
Step S2: truss loose mail is transported to each floor (3), assembles truss not on the assembled moulding bed (4) of each floor (3) Same section;
Step S3: the truss section on minimum floor (3) is promoted at adjacent higher truss section, and the two truss section is connected It is integral;
Step S4: by overall increasing at the truss section on higher adjacent floor deck (3) for connection, and another entirety is connected into;
Step S5: repeating step S4, until all truss sections are closed up in high-altitude for a truss entirety;
Step S6: truss is fixed in the truss integral lifting in step S5 to preset height.
2. the truss sections of ladder work surface according to claim 1 accumulate lifting construction method, which is characterized in that step S1 specifically:
The three-dimensional coordinate for extracting support and truss, according to the three-dimensional coordinate of extraction, on the different ladder height floors (3) of building Assembled moulding bed (4) are respectively set.
3. the truss sections of ladder work surface according to claim 2 accumulate lifting construction method, which is characterized in that step " the different sections of assembled truss on the assembled moulding bed (4) of each floor (3) " specifically include in S2:
Step S21: according to the practical floor situation in scene, model of slabs is established using software, according to model of slabs and aforementioned extraction Three-dimensional coordinate truss is segmented;
Step S22: according to the different sections of segmentation assembling part truss on the assembled moulding bed (4) of each floor (3).
4. the truss sections of ladder work surface according to claim 3 accumulate lifting construction method, which is characterized in that in step Between rapid S21 and step S22 further include:
Preassembling is simulated to each segmentation truss using simulation software, according to simulation result, the size of each segmentation truss is adjusted It is whole.
5. the truss sections of ladder work surface according to any one of claim 1 to 4 accumulate lifting construction method, special Sign is, before step S3 further include:
Hoisting frame (2) are built, multiple lifters (1) for being promoted to truss are disposed on hoisting frame (2).
6. the truss sections of ladder work surface according to claim 5 accumulate lifting construction method, which is characterized in that
The reinforcing bar for being supported to lifter (1) is additionally provided on hoisting frame (2).
7. the truss sections of ladder work surface according to claim 5 accumulate lifting construction method, which is characterized in that use Control system controls multiple lifters (1);
The control system includes input unit, master controller and from controller;
It is described from the quantity of controller be it is multiple and equal with the quantity of lifter (1);
The input unit is used to be sent according to external input to the master controller and instruct;
The master controller by CAN bus with respectively connect from controller, the master controller be used for instruct based on the received to Respectively signal is sent from controller;
Respectively from controller based on the received signal control lifter (1) opening and closing.
8. the truss sections of ladder work surface according to claim 5 accumulate lifting construction method, which is characterized in that also adopt It is monitored with working condition of the sensor to lifter (1).
9. the truss sections of ladder work surface according to claim 5 accumulate lifting construction method, which is characterized in that
When adjacent two truss sections (5) misplace to interface, jack is also arranged on hoisting frame (2), jack instead pushes up pair Any truss section (5) of interface dislocation, makes the salty conjunction of docking of two adjacent truss sections (5), then carries out docking welding.
10. accumulating lifting construction side to the truss sections of ladder work surface described in any one of 4,6 to 9 according to claim 1 Method, which is characterized in that
Two adjacent truss sections (5) are provided with reinforcing rod to interface.
CN201910118517.3A 2019-02-16 2019-02-16 A kind of truss sections accumulation lifting construction method of ladder work surface Pending CN109812023A (en)

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