CN103225423A - Existing building surrounding type story-adding structure and construction method thereof - Google Patents
Existing building surrounding type story-adding structure and construction method thereof Download PDFInfo
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- 238000010276 construction Methods 0.000 title abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 158
- 239000010959 steel Substances 0.000 claims abstract description 158
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000004567 concrete Substances 0.000 claims description 5
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- 229910052742 iron Inorganic materials 0.000 claims description 3
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Abstract
The invention relates to an existing building surrounding type story-adding structure and a construction method thereof, and belongs to the field of structure seismic strengthening. According to the invention, outer covering type steel structures are added on the periphery of an existing building, and the steel structures surround the existing building and are connected end to end on the plane, so that the horizontal seismic load of the whole structures can be effectively increased. According to the invention, when newly added load-bearing type steel columns of the surrounding type structures exceed the top part of the existing building, load-bearing cross beams are arranged and connected with the newly added load-bearing type steel columns. The whole load at the upper parts of the newly added load-bearing cross beams is transmitted to the newly added load-bearing type steel columns and then the foundation. The surrounding type story-adding technology enables the new structures and the old structures to be closely connected in a hinged or rigid manner, so that the structure stability is increased, the stress system of the whole structure is reasonable, and the safety and the reliability of the whole structure are ensured. Through existing building surrounding type story-adding construction, the present problem about housing difficulty of people is solved and meanwhile a great deal of land resource of the nation is saved.
Description
Technical field
The present invention relates to a kind of existing building and enclose shell type adding storey structure and job practices thereof, belong to the seismic hardening technical field.
Background technology
China is a country that has a large population and a few land, and this is restricted with regard to the development that makes the city.At present, because the restriction of national economic situation also can't be removed large batch of old room and be built new house again, solve the situation of people's house difficulty.Along with China population growth and development of economic construction, this phenomenon is more and more obvious.Thereby take on original building, to increase the demand that the number of plies (just existing building adds layer) satisfies people's house, be to alleviate the practical a kind of method of present acute housing shortage, simultaneously also save national land resources, can be described as the good thing of killing two birds with one stone.The layer that adds of the storey-adding reconstruction of existing building, particularly dwelling house grows tall and will be in recent years development trend.Wherein, enclosing shell type adds layer technology and which floor can increase to tens layers according to engineering actual conditions and needs, even it is more, but enclosing shell type, to add in the layer new, old structure collaborative work be to enclose shell type to add one of key technology of layer, can connection meet mechanical model and reliably working, and the reasonable stressed and trouble free service of total is had crucial effects.
Summary of the invention
Based on the problems referred to above, the present invention proposes a kind of existing building and enclose shell type adding storey structure and job practices thereof, add by enclosing shell type that layer technology can make newly, take hinged between old structure or mode such as rigidly connect closely connects, play the constitutionally stable effect that strengthens, the total stress system is reasonable, can guarantee the safe and reliable of total.Enclose the shell type storey-adding reconstruction by existing building of the present invention, can solve the problem of present people's house difficulty, also saved national a large amount of land resources simultaneously.
Technical scheme of the present invention is as follows:
A kind of existing building encloses the shell type adding storey structure, be provided with around the described existing building and enclose nested structure, the described nested structure that encloses all adopts steel work, the described nested structure that encloses joins end to end in the plane around the exterior wall of existing building, and the described nested structure that encloses comprises that several newly add the bearing type steel column, newly add and enclose cover longitudinal type girder steel, newly add and enclose cover lateral type girder steel, outer steel column, load-bearing crossbeam and 4 interior columns of angles and 4 exterior angle steel columns; Described outer steel column and newly add between the bearing type steel column and the outer steel column and the interior column of angles between be connected with newly to add and enclose cover lateral type girder steel, be connected with between the described outer steel column and between outer steel column and the exterior angle steel column newly to add to enclose and overlap the longitudinal type girder steel; Describedly newly add the bearing type steel column, newly add and enclose cover longitudinal type girder steel and the interior column of angles and connect and compose described interior week of enclosing nested structure, described outer steel column, exterior angle steel column and all the other newly add to enclose overlaps the longitudinal type girder steel and connects and composes described periphery of enclosing nested structure; Newly add the position that the bearing type steel column surpasses the existing building top at the described nested structure that encloses, be provided with the load-bearing crossbeam, increase on the described load-bearing crossbeam one deck steel work floor is at least arranged, described load-bearing crossbeam with newly add the bearing type steel column and be connected, enclose the shell type adding storey structure thereby constitute, make all Load Transfer that newly add load-bearing crossbeam top newly be added the bearing type steel column until passing to the basis; According to the difference that increases number of floor levels on the load-bearing crossbeam, described newly add between bearing type steel column and the existing building exterior wall, adopt hinged or rigidly connect, and can increase the horizontal earthquake load of total effectively.
Described existing building encloses the shell type adding storey structure, for increase on the load-bearing crossbeam number of plies more enclose the shell type adding storey structure, describedly newly add bearing type steel column and existing building exterior wall and corresponding interior cross wall is undertaken hinged by bar planting, pre-buried articulated elements.The number of floor levels that increases on the described load-bearing crossbeam is more than or equal to 3 layers.
Described existing building encloses the shell type adding storey structure, for increase on the load-bearing crossbeam number of plies less enclose the shell type adding storey structure, newly add bearing type steel column and existing building exterior wall and corresponding interior cross wall connects by the bolt bar planting, the bolt of implanting cross wall in the existing building with newly add the bearing type steel column and rigidly connect by nut is fastening.The number of floor levels that increases on the described load-bearing crossbeam is the 1-2 layer.
Described existing building encloses the shell type adding storey structure, and described existing building is masonry structure or reinforced concrete structure.
Described existing building encloses the shell type adding storey structure, and the roof of the steel work floor that increases on the described load-bearing crossbeam adopts pitched roof.
Described existing building encloses the shell type adding storey structure, and the described bearing type steel column that newly adds is i iron or combining structure.
Described existing building encloses the shell type adding storey structure, and described enclosing also is provided with the steel diagonal brace on the shell type adding storey structure, longitudinal type oblique connection of girder steel plays reinforcement effect in order to newly to add to enclose to overlap with upper and lower layer.
Above-mentioned existing building encloses the job practices of shell type adding storey structure, and concrete steps are as follows:
Step 1:, prepare the position of installation steel column in outside four orientation of existing building and carry out the steel column basis that newly adds bearing type steel column, outer steel column, the interior column of angles and exterior angle steel column in advance according to design drawing;
Step 2: install in outside four orientation of existing building and newly to add bearing type steel column, outer steel column, the interior column of angles, exterior angle steel column and Xin Jia and enclose cover longitudinal type girder steel, newly add and enclose cover lateral type girder steel and steel diagonal brace and connect and compose and enclose nested structure, and leave a door unlocked in advance, the window opening mouth;
Step 3: will newly add the bearing type steel column and link to each other with the existing building exterior wall:
At increase the number of plies more enclose the shell type adding storey structure: will newly add bearing type steel column and existing building exterior wall and corresponding interior cross wall is undertaken hinged by bar planting, pre-buried articulated elements;
At increase the number of plies less enclose the shell type adding storey structure: will newly add bearing type steel column and existing building exterior wall and corresponding interior cross wall connects by the bolt bar planting, implant the existing building bolt of cross wall and newly add the bearing type steel column and rigidly connect within the walls outward by nut is fastening;
Step 4: newly adding the top portion that the bearing type steel column surpasses existing building, the load-bearing crossbeam is set, with the load-bearing crossbeam with newly add the bearing type steel column and be connected, make newly to add the load-bearing crossbeam and certain slit is left at the existing building top;
Step 5:, continue assembling steel work floor until the roof according to design drawing on load-bearing crossbeam top.
Beneficial effect:
Adopt structure of the present invention, when earthquake is arrived, existing building and Xin Jia enclose the invasion and attack that nested structure is resisted seismic wave jointly, even existing building produces bigger crack, even local damage, come off, newly add and enclose the shell type adding storey structure because the ductility of steel work is good, the part may deform, but the whole shell type adding storey structure integrality of enclosing can be not destroyed, can guarantee that total can not cave in, and causes huge casualties in the time of can avoiding macroseism and avoid property loss.Enclose the shell type storey-adding reconstruction by existing building, can solve the problem of present people's house difficulty, also saved national a large amount of land resources simultaneously, have remarkable economic efficiency and social benefit.
Description of drawings
Fig. 1 is that existing building (masonry structure) encloses shell type and adds the layer plane schematic diagram;
Fig. 2 is the A-A sectional view (masonry structure encloses shell type and adds a layer elevation) of Fig. 1;
Fig. 3 carries out connection diagram for newly adding the bearing type steel column by articulated elements and body of wall;
Fig. 4 carries out connection diagram for newly adding the bearing type steel column by rigidly connecting part and body of wall;
Among the figure, 1: newly add the bearing type steel column; 2: newly add and enclose cover longitudinal type girder steel; 3: the existing building exterior wall; 4: the load-bearing crossbeam; 5: articulated elements; 6: the roof; 7, bolt; 8: nut; 9: interior cross wall; 10: newly add and enclose cover lateral type girder steel; 11: floor; 12: the interior column of angles; 13: the exterior angle steel column; 14: outer steel column.
The specific embodiment
A kind of existing building of the present invention encloses the shell type adding storey structure, the specific embodiment is shown in Fig. 1-4, be provided with around the existing building and enclose nested structure, enclose nested structure and all adopt steel work, the described nested structure that encloses joins end to end in the plane around the exterior wall 3 of existing building, encloses nested structure and comprises that several newly add bearing type steel column 1, newly add and enclose cover longitudinal type girder steel 2, newly add and enclose cover lateral type girder steel 10, outer steel column 14, load-bearing crossbeam 4 and 4 interior columns of angles 12 and 4 exterior angle steel columns 13; Outer steel column 14 and newly add between the bearing type steel column 1 and the outer steel column 14 and the interior column of angles 12 between be connected with newly to add and enclose cover lateral type girder steel 10, be connected with between the outer steel column 14 and between outer steel column 14 and the exterior angle steel column 13 newly to add to enclose and overlap longitudinal type girder steel 2; Newly add bearing type steel column 1, newly add and enclose cover longitudinal type girder steel 2 and the interior column of angles 12 and connect and compose described interior week of enclosing nested structure, outer steel column 14, exterior angle steel column 13 and all the other newly add encloses cover longitudinal type girder steel 2 and connects and composes described periphery of enclosing nested structure; Newly add the position that bearing type steel column 1 surpasses the existing building top enclosing nested structure, be provided with load-bearing crossbeam 4, increasing on the load-bearing crossbeam 4 has one deck steel work floor at least, load-bearing crossbeam 4 with newly add bearing type steel column 1 and be connected, thereby formation is enclosed the shell type adding storey structure; According to the difference that increases number of floor levels on the load-bearing crossbeam 4, newly add between bearing type steel column 1 and the existing building exterior wall 3 and to adopt hinged or rigidly connect.The existing building of present embodiment adopts masonry structure, as shown in Figure 1.The roof 6 of the steel work floor that increases on its load-bearing crossbeam 4 adopts pitched roof, as shown in Figure 2, it newly adds bearing type steel column 1 and is i iron or combining structure, encloses also to be provided with the steel diagonal brace on the shell type adding storey structure, longitudinal type 2 oblique connections of girder steel plays reinforcement effect in order to newly to add to enclose to overlap with upper and lower layer.
For increase on the load-bearing crossbeam 4 number of plies more enclose the shell type adding storey structure, as more than or equal to 3 layers, newly add bearing type steel column 1 and existing building exterior wall 3 and corresponding interior cross wall 9 undertaken by bar planting, pre-buried articulated elements 5 hinged, as shown in Figure 3.
For increase on the load-bearing crossbeam 4 number of plies less enclose the shell type adding storey structure, as the 1-2 layer, newly add bearing type steel column 1 and existing building exterior wall 3 and corresponding interior cross wall 9 connects by bolt 7 bar plantings, implant the bolt 7 of cross wall 9 in the existing building and newly add bearing type steel column 1 by nut 8 fastening rigidly connecting, as shown in Figure 4.
Above-mentioned existing building encloses the concrete job practices of shell type adding storey structure, and concrete steps are as follows:
Step 1:, prepare the position of installation steel column in outside four orientation of existing building and carry out the steel column basis that newly adds bearing type steel column 1, outer steel column 14, the interior column of angles 12 and exterior angle steel column 13 in advance according to design drawing;
Step 2: install in outside four orientation of existing building and newly to add bearing type steel column 1, outer steel column 14, the interior column of angles 12, exterior angle steel column 13 and Xin Jia and enclose cover longitudinal type girder steel 2, newly add and enclose cover lateral type girder steel 10 and steel diagonal brace and connect and compose and enclose nested structure, and leave a door unlocked in advance, the window opening mouth;
Step 3: will newly add bearing type steel column 1 and link to each other with the existing building exterior wall:
At increase the number of plies more enclose the shell type adding storey structure: will newly add bearing type steel column 1 and existing building exterior wall 3 and corresponding interior cross wall 9 is undertaken hinged by bar planting, pre-buried articulated elements 5;
At increase the number of plies less enclose the shell type adding storey structure: will newly add bearing type steel column 1 and existing building exterior wall 3 and corresponding interior cross wall 9 connects by bolt 7 bar plantings, implant the existing building bolt 7 of cross wall 9 and newly add bearing type steel column 1 within the walls outward by nut 8 fastening rigidly connecting;
Step 4: newly adding the top portion that bearing type steel column 1 surpasses existing building, load-bearing crossbeam 4 is set, with load-bearing crossbeam 4 with newly add bearing type steel column 1 and be connected, make newly to add load-bearing crossbeam 4 and certain slit is left at the existing building top;
Step 5:, continue assembling steel work floor until roof 6 according to design drawing on load-bearing crossbeam 4 tops.
More than be an exemplary embodiment of the present invention, concrete enforcement of the present invention is not limited thereto.
Claims (10)
1. an existing building encloses the shell type adding storey structure, be provided with around the described existing building and enclose nested structure, the described nested structure that encloses all adopts steel work, the described nested structure that encloses joins end to end in the plane around the exterior wall (3) of existing building, it is characterized in that: the described nested structure that encloses comprises that several newly add bearing type steel column (1), newly add and enclose cover longitudinal type girder steel (2), newly add and enclose cover lateral type girder steel (10), outer steel column (14), load-bearing crossbeam (4) and 4 interior columns of angles (12) and 4 exterior angle steel columns (13);
Described outer steel column (14) and newly add between the bearing type steel column (1) and the outer steel column (14) and the interior column of angles (12) between be connected with newly to add and enclose cover lateral type girder steel (10), be connected with between the described outer steel column (14) and between outer steel column (14) and the exterior angle steel column (13) newly to add to enclose and overlap longitudinal type girder steel (2);
Describedly newly add bearing type steel column (1), newly add and enclose cover longitudinal type girder steel (2) and the interior column of angles (12) and connect and compose described interior week of enclosing nested structure, described outer steel column (14), exterior angle steel column (13) and all the other newly add to enclose overlaps longitudinal type girder steel (2) and connects and composes described periphery of enclosing nested structure;
Newly add the position that bearing type steel column (1) surpasses the existing building top at the described nested structure that encloses, be provided with load-bearing crossbeam (4), described load-bearing crossbeam (4) is gone up to increase one deck steel work floor at least, described load-bearing crossbeam (4) with newly add bearing type steel column (1) and be connected, enclose the shell type adding storey structure thereby constitute;
According to the difference that increases number of floor levels on the load-bearing crossbeam (4), described newly add between bearing type steel column (1) and the existing building exterior wall (3), adopt hinged or rigidly connect.
2. existing building according to claim 1 encloses the shell type adding storey structure, it is characterized in that: for load-bearing crossbeam (4) go up to increase the number of plies more enclose the shell type adding storey structure, describedly newly add bearing type steel column (1) and existing building exterior wall (3) and corresponding interior cross wall (9) is undertaken hinged by bar planting, pre-buried articulated elements (5).
3. existing building according to claim 2 encloses the shell type adding storey structure, it is characterized in that: it is more than or equal to 3 layers that described load-bearing crossbeam (4) is gone up the number of floor levels that increases.
4. existing building according to claim 1 encloses the shell type adding storey structure, it is characterized in that: for load-bearing crossbeam (4) go up to increase the number of plies less enclose the shell type adding storey structure, newly add bearing type steel column (1) and existing building exterior wall (3) and corresponding interior cross wall (9) connects by bolt (7) bar planting, the bolt (7) of implanting cross wall (9) in the existing building with newly add bearing type steel column (1) by fastening the rigidly connecting of nut (8).
5. existing building according to claim 4 encloses the shell type adding storey structure, it is characterized in that: it is the 1-2 layer that described load-bearing crossbeam (4) is gone up the number of floor levels that increases.
6. existing building according to claim 1 encloses the shell type adding storey structure, it is characterized in that: described existing building is masonry structure or reinforced concrete structure.
7. existing building according to claim 1 encloses the shell type adding storey structure, it is characterized in that: the roof (6) that described load-bearing crossbeam (4) is gone up the steel work floor that increases adopts pitched roof.
8. existing building according to claim 1 encloses the shell type adding storey structure, it is characterized in that: the described bearing type steel column (1) that newly adds is i iron or combining structure.
9. existing building according to claim 1 encloses the shell type adding storey structure, it is characterized in that: described enclosing also is provided with the steel diagonal brace on the shell type adding storey structure, the oblique connection of longitudinal type girder steel (2) plays reinforcement effect in order to newly to add to enclose to overlap with upper and lower layer.
10. the job practices of enclosing the shell type adding storey structure according to the arbitrary described existing building of claim 1-9, it is characterized in that: concrete steps are as follows:
Step 1:, prepare the position of installation steel column in outside four orientation of existing building and carry out the steel column basis that newly adds bearing type steel column (1), outer steel column (14), the interior column of angles (12) and exterior angle steel column (13) in advance according to design drawing;
Step 2: install in outside four orientation of existing building newly to add bearing type steel column (1), outer steel column (14), the interior column of angles (12), exterior angle steel column (13) and newly to add and enclose cover longitudinal type girder steel (2), newly add to enclose and overlap lateral type girder steel (10) and steel diagonal brace and connect and compose and enclose nested structure, and leave a door unlocked in advance, the window opening mouth;
Step 3: will newly add bearing type steel column (1) and link to each other with the existing building exterior wall:
At increase the number of plies more enclose the shell type adding storey structure: will newly add bearing type steel column (1) and existing building exterior wall (3) and corresponding interior cross wall (9) is undertaken hinged by bar planting, pre-buried articulated elements (5);
At increase the number of plies less enclose the shell type adding storey structure: will newly add bearing type steel column (1) and existing building exterior wall (3) and corresponding interior cross wall (9) connects by bolt (7) bar planting, the implantation existing building is the bolt (7) of cross wall (9) and newly add bearing type steel column (1) by fastening the rigidly connecting of nut (8) within the walls outward;
Step 4: newly adding the top portion that bearing type steel column (1) surpasses existing building, load-bearing crossbeam (4) is set, with load-bearing crossbeam (4) with newly add bearing type steel column (1) and be connected, make newly to add load-bearing crossbeam (4) and certain slit is left at the existing building top;
Step 5:, continue assembling steel work floor until roof (6) according to design drawing on load-bearing crossbeam (4) top.
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| CN103711329A (en) * | 2013-12-30 | 2014-04-09 | 北京工业大学 | Method for reinforcing structure by means of method of externally attaching steel-reinforced concrete framework |
| CN103711330A (en) * | 2013-12-30 | 2014-04-09 | 北京工业大学 | Method for using prefabricated reinforced concrete frame to reinforce existing structure through prestressing assembly |
| CN103741958A (en) * | 2013-12-30 | 2014-04-23 | 北京工业大学 | Method for reinforcing existing building by peripheral assembled substructure |
| CN103790393A (en) * | 2014-01-17 | 2014-05-14 | 上海建工四建集团有限公司 | Construction method for integrated replacement of existing building structure |
| CN105604343A (en) * | 2016-01-29 | 2016-05-25 | 浙江水利水电学院 | Construction method for reinforcing and repairing integral wall of ancient architecture |
| CN105625745A (en) * | 2016-03-11 | 2016-06-01 | 上海建工二建集团有限公司 | Eccentric exterior wall underpinning structure and method |
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