CN102587688B - Method for simultaneous construction of additionally built superstructure and reinforcement of original understructure - Google Patents

Method for simultaneous construction of additionally built superstructure and reinforcement of original understructure Download PDF

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Publication number
CN102587688B
CN102587688B CN201210073760.6A CN201210073760A CN102587688B CN 102587688 B CN102587688 B CN 102587688B CN 201210073760 A CN201210073760 A CN 201210073760A CN 102587688 B CN102587688 B CN 102587688B
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original
construction
newly
building
slab
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CN102587688A (en
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胡攀
黄晨光
黄安平
洪琦
魏开雄
田艰坚
冯苛钊
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Second Construction Engineering Co Ltd of China Construction Third Engineering Division
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Second Construction Engineering Co Ltd of China Construction Third Engineering Division
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Abstract

The invention relates to a method for simultaneous construction of an additionally built superstructure and reinforcement of an original understructure. The original understructure requires reinforcement, and the superstructure is additionally built. Measure transfer beams are disposed to complete downward transfer of load of the additionally built superstructure under the condition that stress of the original bearing understructure is allowable, and accordingly simultaneous construction of the superstructure and the understructure is achieved. Upper load is applied to the measure transfer beams and is transferred through a vertical structure, so that simultaneous construction of the original understructure reinforcement and the additionally built superstructure is realized, the time for awaiting the reinforcement of the original understructure before the construction of the superstructure is omitted, construction process is evidently increased, and construction period is shortened.

Description

Bottom original structure is reinforced with top and is newly added the method for building simultaneous construction
Technical field
The present invention relates to a kind of bottom original structure and reinforce with top and newly add the method for building simultaneous construction, belong to building structure construction technical field, be applicable to that structural strengthening construction is carried out in bottom and top newly adds the building structure of building simultaneous construction.
Background technology
Along with the development of urbanization process, various places highrise building emerges in multitude.Due to each side reason, some highrise building has not continued after building a part, shelves after a period of time, need proceed construction.Follow-up construction, in order to reach use function, should not be constructed by original drawing, or original structure can not meet load requirement, need process substructure, builds superstructure with stylish adding.By traditional form of construction work, need, after substructure has been reinforced, can carry out Superstructure Construction, because the substructure strengthening construction time is long, wait stabilization works all to complete to construct again top newly to add to build structure and just need to expend the longer duration.
Summary of the invention
Problem and shortcoming that object of the present invention exists in order to overcome above-mentioned prior art, provide a kind of bottom original structure to reinforce with top and newly add the method for building simultaneous construction, upper load is placed on the measure conversion beam of setting, transmit load by vertical structure, can make bottom original structure stabilization works and top newly-built structure construct simultaneously, before having saved Superstructure Construction, wait for the time that bottom original structure stabilization works completes, significantly improved construction speed, shortened the construction period.
Technical scheme of the present invention is:
Substructure is reinforced top and is newly added a construction method of building simultaneous construction, and this construction method relates to original structure, the beam slab that newly adds wall column, the original structure of building structure, original structure, measure conversion beam, newly adds and build the wall column of structure, newly add the method that the beam slab of structure is constructed simultaneously of building; It is characterized in that carrying out according to the following steps: first the part beam slab of original structure is removed to the upwards condition of construction that makes it have, according to newly add build the wall column of structure, newly add build structure Beam-Slab Construction progress determine calculate load, adjust the wall column stressing conditions of original structure, simultaneously calculate between the beam slab that newly adds beam slab, the original structure of building structure measure conversion beam is set according to load, the wall column of original structure, the beam slab of original structure carry out strengthening reconstruction, and same stylish adding, builds structure and can up continue construction.
Construction method of the present invention, is applicable to original structure strengthening reconstruction top, bottom and newly adds the engineering of building simultaneous construction, it is characterized in that original structure can meet a part of newly-built structure load delivery request through adjusting.
Bottom original structure is reinforced with top and is newly added the method for building simultaneous construction, carry out according to the following steps: (1), wall column and beam slab to original structure carry out complete detection, assessment original structure self-condition, determine the wall column stress performance of original structure according to original structure design drawing and detection assessment result, build structural drawings and determine measure conversion beam position according to newly adding, and the setting of measure conversion beam does not affect building and uses function; (2), determine original structure strengthening reconstruction Construction Plan and newly add the structure construction plan of building, according to newly adding wall column and the definite load that calculates of Beam-Slab Construction progress of building structure, by Load Combination calculative determination measure conversion beam specification, and can holding capacity situation determine top according to the wall column of original structure and newly add the number of plies of building structure and can construct and (calculate according to load and original structure is detected and draws data, consider in bottom original structure unguyed situation, top newly adds builds the structure number of plies of can constructing at most); (3), check the plan of original structure strengthening reconstruction according to calculated case, its and top are newly added build structure construction plan to keep synchronizeing, original structure strengthening reconstruction can meet top and newly adds and build structural load and combine requirement after completing; (4), on-the-spot the beam slab of original structure is arranged to measure conversion beam with newly adding after the beam slab delivery position of building structure is processed, newly add the construction of building structure and original structure simultaneously, treat that construct measure conversion beam place and measure conversion beam of original structure footing combines together; Measure conversion beam links into an integrated entity upper and lower two part-structures.
Measure conversion beam is arranged on the beam slab of original structure and newly adds between the beam slab of building structure, measure conversion beam mainly adopts reinforced concrete beam mode, also can adopt section steel beam mode, for guaranteeing that substructure shear wall horizontal force transmits, increase steel plate shear force according to calculating content.Newly adding the shear wall of building structure completes load by measure conversion beam and is passed to vertical structure, original structure is not constructed shear wall after possessing execution conditions, can transmit horizontal earthquake load by shear connector, shear wall vertical reinforcement can adopt reserved or bar planting mode, and measure conversion beam will finally be retained as a structure part.
Measure conversion beam is the conventional a kind of structure of this technical field of buildings, and the measure conversion beam structure that the present invention adopts is also existing structure.
The present invention met top newly add build structure before bottom original structure has been reinforced, start construction, by increase, measure conversion beam is set and completes the down transmission that top newly adds the horizontal loading of building structure, up-down structure is constructed simultaneously.According to construction method of the present invention, can significantly improve speed of application, guarantee construction quality and safety, reduce manufacturing cost, therefore, there is obvious economic benefit.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of original structure.
Fig. 2 is that original structure part beam slab is removed, vertical structure is reinforced and top newly adds and builds structural representation.
Fig. 3 is that original structure is reinforced and newly adds and build the completed schematic diagram of structure.
Fig. 4 is measure conversion beam layout plan.
Fig. 5 is measure conversion beam support arrangement figure.
Fig. 6 is measure conversion beam drawing.
Fig. 7 is the gravity load force diagram of measure conversion beam.
The specific embodiment
The invention will be further described by reference to the accompanying drawings.
Fig. 4 is measure conversion beam layout plan, and this figure represents that bottom shear wall, owing to having reinforced, can not construct, and superstructure shear wall can transmit top shear wall load to post by this measure beam.
As shown in Figure 1, Figure 2, Figure 3 shows, the specific embodiment of the invention is carried out according to the following steps:
(1) first the part beam slab of original structure 1 is removed to the upwards condition of construction that makes it have, wall column 3 to original structure 1 and beam slab 4 carry out complete detection, assess its structure self-condition, determine wall column 3 stress performances of original structure according to original structure design drawing and detection assessment result; According to ruggedized construction feature, adjust former layout design, structural concrete keypoint part is carried out to the concrete detection of loosing core simultaneously, determine original concrete supporting capacity, determine according to results of measuring that original structure concrete structure reinforcement form and top newly add and build form of structure; Should consider that building function need to determine that original structure 1 retains the number of plies, if do not met the demands, part can cut in advance simultaneously; Because bottom original structure 1 has existed part-structure, consider duration and easy construction, select the direct reinforcing method of concrete structure to have: increasing section reinforcing method, outer steel bonding plate reinforcing method or stickup fibrous composite reinforcing method;
Build structure 2 drawings and determine measure conversion beam 5 positions according to newly adding, and measure conversion beam 5 arranges and do not affect building and use function, at reasonable stress with do not affect top and newly add to build and continue the definite measure conversion beam that arranges of construction location;
(2) determine original structure 1 strengthening reconstruction Construction Plan and newly add and build structure 2 Construction Plans, according to newly adding wall column 6 and the definite load that calculates of beam slab 7 construction speeds of building structure 2, by Load Combination calculative determination measure conversion beam specification, and can holding capacity situation determine top according to the wall column 3 of original structure 1 and newly add and build structure 2 number of plies of can constructing; Newly add and build structure 2 number of plies of constructing and can adopt existing method to calculate (to calculate according to load and original structure is detected and draws data, consider in the unguyed situation of bottom original structure, top newly adds builds the structure number of plies of can constructing at most), measure conversion beam arranges calculating (being all designed with shear wall situation as example take bottom original structure)
Force Calculation in horizontal direction:
V1=0.07×f c×b×h
Shearing in V1-horizontal direction; (kN)
F c-concrete axle center compressive strength design load; (N/mm)
B-shear wall width; (mm)
H-shear wall height.(mm)
This position is stressed transmits by steel plate shear key is set, and according to steel plate specification and stressed, needs steel plate piece number to calculate as follows:
V=f×A
M=V 1/V
F-steel plate shear resistance (N/mm 2)
A-steel plate shear resistent area (mm 2)
Shearing in V1-horizontal direction (kN)
Required steel plate piece number in M-measure conversion beam
Force Calculation in vertical direction:
Newly add and build structure stress and calculate according to design measure beam position and top, as measure conversion beam is arranged on N layer, according to newly adding and build structural drawings, in conjunction with Construction Plan, original structure needs to have reinforced for 2 months, and top new construction can be constructed 8 layers within this period, the all gravity loads in this position that superpose are directly placed on measure conversion beam, be N, N+1, N+2 ..., N+8 story shear wall and dark beam load superposition, gravity load is considered to be abound with, force diagram is as Fig. 7:
Utilize PKPM to calculate measure conversion beam specification and arrangement of reinforcement situation, adopt MIDAS, ansys software simulation construction overall process and each operating mode is analyzed, formulation can be implemented constructure scheme; Newly add simultaneously build structure 2, original structure 1 is constructed, and strengthens structure monitoring in work progress, strictly construct by scheme.
According to above-mentioned calculating, determine cross section and the arrangement of reinforcement of measure conversion beam steel plate piece used number and measure conversion beam.
Fig. 5 is measure conversion beam Construction Support figure.The construction process of conversion beam is prior art, is specially: install punch → colligation beam steel → placements anti-shear steel plate that supports → install beam forms → beam bottom mother plate at the bottom of full hall frame → install beam → with bar dowel by Plate Welding on beam muscle → placement bottom shear wall joint bar → arrange Screw arbor with nut at both-ends → fluid concrete.
Fig. 6 is measure conversion beam drawing, consistent with other conversion beam forms of construction work, but owing to having increased the steel plate of antiseismic side force, therefore stirrup is made U-shaped hoop, measure conversion beam bottom shear force wall reinforcing steel bar can be stayed and be established by reserved or bar planting mode, treat that substructure reinforced, construct to measure conversion beam position, up-down structure can be connected as a single entity.
Fig. 4, Fig. 5, Fig. 6 are the method introduction that utilizes prior art working measure conversion beam 5, wherein comprise wooden a tree, used in making timber for boats 8, veneer 9, Screw arbor with nut at both-ends 10, steel pipe 11, steel plate 12, reinforcing bar 13 and design post 14, design measure conversion beam 5.

Claims (3)

1. substructure is reinforced top and is newly added a construction method of building simultaneous construction, and this construction method relates to original structure (1), the beam slab (4) that newly adds wall column (3), the original structure of building structure (2), original structure, measure conversion beam (5), newly adds and build the wall column (6) of structure, newly add the method that the beam slab (7) of structure is constructed simultaneously of building, it is characterized in that carrying out according to the following steps: first the part beam slab of original structure (1) is removed to the upwards condition of construction that makes it have, according to newly adding the wall column (6) of building structure, newly add the definite load that calculates of beam slab (7) construction speed of building structure, adjust wall column (3) stressing conditions of original structure, calculate and add the beam slab (7) of building structure (2) newly according to load simultaneously, between the beam slab (4) of original structure (1), measure conversion beam (5) is set, the wall column (3) of original structure, the beam slab (4) of original structure carries out strengthening reconstruction, and same stylish adding, builds structure (2) and can up continue construction.
2. construction method according to claim 1, is characterized in that original structure (1) can meet a part and newly adds and build structure (2) load delivery request through adjusting.
3. construction method according to claim 1 and 2, is characterized in that comprising the following steps:
(1), the wall column to original structure and beam slab carry out complete detection, assessment original structure self-condition, determine the wall column stress performance of original structure according to original structure design drawing and detection assessment result, build structural drawings and determine measure conversion beam position according to newly adding, and the setting of measure conversion beam does not affect building and uses function;
(2), determine original structure strengthening reconstruction Construction Plan and newly add the structure construction plan of building, according to newly adding wall column and the definite load that calculates of Beam-Slab Construction progress of building structure, by Load Combination calculative determination measure conversion beam specification, and can holding capacity situation determine top according to the wall column of original structure and newly add and build the number of plies that structure can be constructed;
(3), check the plan of original structure strengthening reconstruction according to calculated case, its and top are newly added build structure construction plan to keep synchronizeing, original structure strengthening reconstruction can meet top and newly adds and build structural load and combine requirement after completing;
(4), on-the-spot the beam slab of original structure is arranged to measure conversion beam with newly adding after the beam slab delivery position of building structure is processed, newly add the construction of building structure and original structure simultaneously, treat that construct measure conversion beam place and measure conversion beam of original structure footing combines together.
CN201210073760.6A 2012-03-20 2012-03-20 Method for simultaneous construction of additionally built superstructure and reinforcement of original understructure Active CN102587688B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104499608B (en) * 2014-12-19 2017-03-08 江苏鼎达建筑新技术有限公司 The design and construction method of prestressing force section steel reinforcement shear wall
CN105888278B (en) * 2015-12-31 2018-02-09 上海建工七建集团有限公司 A kind of superstructure adds the Vierendeel girder Demolition Construction method built under performance

Citations (2)

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Publication number Priority date Publication date Assignee Title
JPH11141140A (en) * 1997-11-06 1999-05-25 Takenaka Komuten Co Ltd Rebuilding method of building
CN101818570A (en) * 2010-03-23 2010-09-01 南通宏华建筑安装有限公司 Method for constructing girder structure conversion layer of high-rise building

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Publication number Priority date Publication date Assignee Title
JPH11141140A (en) * 1997-11-06 1999-05-25 Takenaka Komuten Co Ltd Rebuilding method of building
CN101818570A (en) * 2010-03-23 2010-09-01 南通宏华建筑安装有限公司 Method for constructing girder structure conversion layer of high-rise building

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Title
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邓世友.高层建筑转换层结构的施工技术与经验交流.《江西建材》.2010,(第1期),第91-93页.
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