CN215211486U - Large cantilever structure for balancing insufficient end pressure weight - Google Patents
Large cantilever structure for balancing insufficient end pressure weight Download PDFInfo
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- CN215211486U CN215211486U CN202022911630.8U CN202022911630U CN215211486U CN 215211486 U CN215211486 U CN 215211486U CN 202022911630 U CN202022911630 U CN 202022911630U CN 215211486 U CN215211486 U CN 215211486U
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Abstract
The utility model relates to a structure of encorbelmenting greatly that is used for heavy not enough of balanced end pressure, the structure of encorbelmenting greatly includes basis, balanced truss, encorbelmenting truss and scaffold, and on balanced truss located the basis, the truss of encorbelmenting was located the outside of balanced truss, and under the truss of encorbelmenting was located to the scaffold, balanced truss included entablature, bottom end rail, a plurality of frame post, to the distance it prestretches the power node formation to apply after the frame post that the truss was furthest encorbelmented cuts, to the distance it forms the back weld post to encorbelment the frame post that the truss was once far away to cut, the middle part of prestretching the power node to set up. Compared with the prior art, the utility model discloses the furthest department of truss that encorbelments apart sets up prestretching the force post, makes most balanced moment of flexure concentrate in prestretching the force post, effectively solves the problem that the ballast weight of encorbelmenting the balance end is not enough, reduces the amount of deflection of the truss of encorbelmenting and the displacement that leans forward, and the principle is clear and definite, passes power simple reasonable, and the reliability is high.
Description
Technical Field
The utility model relates to a structure of encorbelmenting greatly especially relates to a structure of encorbelmenting greatly that is used for balanced end to press heavy not enough.
Background
In modern non-residential buildings, large cantilever structures are often employed. The design and construction of a common large cantilever structure are mature, and the method can be basically solved by increasing the rise of cantilever members (cantilever beams, cantilever trusses and the like), reducing the self weight of the structure and the like. However, there are some special overhanging structures, and the problems caused by the large overhang cannot be solved well by adopting the traditional method due to some characteristics of the building.
In the current structure of encorbelmenting greatly, when the ballast of the balanced end of encorbelmenting (ballast end) of structure is not enough relatively, promptly: the load of the overhanging section is large, the load of the non-overhanging section is small, and the relative overhanging section shows insufficient weight. The tension of the tension members, which transmits the bending moment formed by the cantilever load, is excessively large, significantly increasing the difficulty of designing the members and affecting the normal use of the entire cantilever structure.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a structure of encorbelmenting greatly that is used for balanced end to press heavy not enough in order to overcome the defect that above-mentioned prior art exists.
The purpose of the utility model can be realized through the following technical scheme:
a big overhanging structure for balancing the insufficient end pressure weight comprises a foundation, a balance truss, an overhanging truss and a scaffold, wherein the balance truss is arranged on the foundation, the overhanging truss is arranged outside the balance truss, the scaffold is arranged under the overhanging truss, the balance truss comprises an upper beam, a lower beam and a plurality of frame columns, the upper beam and the lower beam are horizontally arranged at intervals, the plurality of frame columns are vertically arranged at intervals, the top ends of the frame columns are fixedly connected with the upper beam, the middle parts of the frame columns are fixedly connected with the lower beam, the bottom ends of the frame columns are fixedly connected with the foundation,
the frame column farthest from the cantilever truss is a pre-tensioning column formed by cutting and applying pre-tensioning nodes, the frame column next farthest from the cantilever truss is a post-welded column formed by cutting and post-welding,
the middle part of the pretensioning column is provided with a pretensioning node.
Preferably, the pre-tensioning column is a steel reinforced concrete column, the pre-tensioning column comprises a pre-tensioning section steel column and concrete poured on the periphery of the pre-tensioning section steel column, the pre-tensioning section steel column is cut to form an upper pre-tensioning column and a lower pre-tensioning column,
the pretensioning joint comprises a pretensioning rib and a first connecting steel plate, the top of the pretensioning rib is connected with the bottom of the lower pretensioning column, the bottom of the pretensioning rib is connected with the top of the lower pretensioning column, the top end of the first connecting steel plate is connected with the bottom of the upper pretensioning column in a welding mode, and the bottom end of the first connecting steel plate is connected with the top end of the lower pretensioning column in a welding mode.
Preferably, the rear welding column is a profile steel concrete column, the rear welding column comprises a rear welding column section steel column and concrete poured on the periphery of the rear welding column section steel column, the rear welding column section steel column is cut to form an upper rear welding column and a lower rear welding column, the rear welding column further comprises a second connecting steel plate, and after the pretensioning node is connected with the pretensioning section steel column, the bottom of the upper rear welding column and the top of the lower rear welding column are welded and fixed through the second connecting steel plate.
Preferably, the foundation comprises a foundation layer and a plurality of foundation fixing columns, and the tops of the foundation fixing columns are fixedly connected with the bottom surface of the foundation layer.
Preferably, the foundation fixing column includes a pull-out pile, a foundation pile and a compression pile, the pull-out pile is disposed below the pre-tension pile, the compression pile is disposed below the frame pile nearest to the cantilever truss, and the foundation pile is disposed between the pull-out pile and the compression pile.
Preferably, the scaffold is removed when the concrete strength of the large cantilever structure reaches 80% of the designed strength.
Preferably, the balance truss further comprises a plurality of truss diagonal rods, one ends of the truss diagonal rods are fixedly connected with the upper cross beam, and the other ends of the truss diagonal rods are fixedly connected with the lower cross beam.
Preferably, the cantilever truss comprises an upper cantilever beam horizontally extending outwards from the upper cross beam, a lower cantilever beam horizontally extending outwards from the lower cross beam and a plurality of cantilever columns, and the cantilever columns are vertically arranged between the upper cantilever beam and the lower cantilever beam.
Preferably, the cantilever truss further comprises a plurality of cantilever diagonal rods, one end of each cantilever diagonal rod is fixedly connected with the upper cantilever beam, and the other end of each cantilever diagonal rod is fixedly connected with the lower cantilever beam.
Preferably, the frame columns are all steel reinforced concrete columns.
The utility model provides a large cantilever structure for balancing the insufficient end pressure weight, which is used for constructing the utility model by a construction method and comprises the following steps,
s1: the cantilever truss structure comprises a construction foundation, a balance truss, a cantilever truss and a scaffold, wherein the balance truss is arranged on the foundation, the cantilever truss is arranged on the outer side of the balance truss, the scaffold is arranged below the cantilever truss, the balance truss comprises an upper cross beam, a lower cross beam and a plurality of frame columns, the upper cross beam and the lower cross beam are horizontally arranged at intervals, the plurality of frame columns are vertically arranged at intervals, the top ends of the frame columns are fixedly connected with the upper cross beam, the middle parts of the frame columns are fixedly connected with the lower cross beam, the bottom ends of the pre-tensioning column, the rear welding column and the frame columns are fixedly connected with the foundation,
among the frame columns, two frame columns which are farthest and next farthest from the cantilever truss are section steel columns;
s2: transversely cutting a frame column which is farthest from the cantilever truss to form an upper pre-tensioning column and a lower pre-tensioning column, and transversely cutting a frame column which is next farthest from the cantilever truss to form an upper rear welding column and a lower rear welding column;
s3: a pretension node is arranged between the upper rear welding column and the lower rear welding column, and the upper pretension column and the lower pretension column are welded in an equal strength mode;
s4: welding an upper rear welding column and a lower rear welding column with equal strength;
s5: pouring concrete on the frame column farthest from the cantilever truss to form a pre-tensioning column, and pouring concrete on the frame column second farthest from the cantilever truss to form a post-welded column;
s6: and removing the scaffold.
Compared with the prior art, the utility model has the advantages of as follows:
(1) the pretensioning column is arranged at the farthest position of the balance truss and the overhanging truss, so that most balance bending moments are concentrated in the pretensioning column, the problem of insufficient weight of an overhanging balance end is effectively solved, the deflection and forward-leaning displacement of the overhanging truss are reduced, the principle is clear, the force transmission is simple and reasonable, and the reliability is high;
(2) the main structure of the utility model cuts, exerts pretension force and welds afterwards two columns farthest from the cantilever truss after the construction of the whole structure is completed, thereby forming pretension columns and rear welding columns, and adopts definite and economical construction steps to construct a large cantilever structure, thereby forming a large cantilever structure for balancing the insufficient end pressure, and the main structure has wide application range and strong practicability;
(3) the foundation fixing pile of the utility model is matched with the structure of the balance truss, and is provided with the uplift pile, the foundation pile and the compression pile, thereby improving the stability of the utility model;
(4) the utility model discloses a balanced truss, the truss of encorbelmenting all adopt the down tube to consolidate stably, improve the utility model discloses a reliability.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a structural elevation view of the pretension node of the pretension column of the present invention;
FIG. 3 is a structural side view of the pretension node of the pretension column of the present invention;
the device comprises an upper cross beam 1, an upper cross beam 2, a lower cross beam 3, a pretensioning column 4, a rear welding column 5, a frame column 6, a truss diagonal rod 7, an overhanging column 8, an upper overhanging beam 9, an overhanging diagonal rod 10, a foundation layer 11, an uplift pile 12, a foundation pile 13, a compression-resistant pile 14, a lower overhanging beam 15, a scaffold 16, a pretensioning node 17, an upper pretensioning column 18, a pretensioning rib 19, a first connecting steel plate 20 and a lower pretensioning column.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. Note that the following description of the embodiments is merely an example of the nature, and the present invention is not intended to limit the application or the use thereof, and the present invention is not limited to the following embodiments.
Examples
A large cantilever structure for insufficient pressure at a balance end comprises a foundation, a balance truss, a cantilever truss and a scaffold 15, wherein the balance truss is arranged on the foundation, the cantilever truss is arranged on the outer side of the balance truss, the scaffold 15 is arranged under the cantilever truss, the balance truss comprises an upper cross beam 1, the cantilever truss structure comprises an upper cross beam 2 and a plurality of frame columns 5, wherein the upper cross beam 1 and the lower cross beam 2 are horizontally arranged at intervals, the frame columns 5 are vertically arranged at intervals, the top ends of the frame columns 5 are fixedly connected with the upper cross beam 1, the middle parts of the frame columns 5 are fixedly connected with the lower cross beam 2, the bottom ends of the frame columns 5 are fixedly connected with a foundation, the frame column 5 farthest from the cantilever truss is a pre-tensioning column 3 formed by cutting and applying a pre-tensioning node 16, the frame column 5 second farthest from the cantilever truss is a post-welding column 4 formed by cutting and post-welding, and the middle part of the pre-tensioning column 3 is provided with a pre-tensioning node 16.
Further, for the specific structure of the pretension column 3 and the way the pretension node 16 is arranged in this embodiment: the pre-tensioning column 3 is a steel reinforced concrete column, the pre-tensioning column 3 comprises a pre-tensioning section steel column and concrete poured on the periphery of the pre-tensioning section steel column, the pre-tensioning section steel column is cut to form an upper pre-tensioning column 17 and a lower pre-tensioning column 20,
the pretension node 16 comprises a pretension rib 18 and a first connecting steel plate 19, the top of the pretension rib 18 is connected with the bottom of the lower pretension column 20, the bottom of the pretension rib 18 is connected with the top of the lower pretension column 20, the top of the first connecting steel plate 19 is welded with the bottom of the upper pretension column 17, and the bottom of the first connecting steel plate 19 is welded with the top of the lower pretension column 20.
Correspondingly, in this embodiment, the rear welding column 4 is a profile steel concrete column, the rear welding column 4 includes a rear welding column section steel column and concrete poured around the rear welding column section steel column, the rear welding column section steel column is cut to form an upper rear welding column and a lower rear welding column, the rear welding column 4 further includes a second connecting steel plate, and after the pretension node 16 is connected with the pretension section steel column, the bottom of the upper rear welding column and the top of the lower rear welding column are welded and fixed through the second connecting steel plate.
The utility model discloses in, the basis includes basic layer 10 and a plurality of basic fixed column, the top of basic fixed column and the bottom surface fixed connection of basic layer 10.
The utility model discloses an among the embodiment, the basis fixed column includes uplift pile 11, foundation pile 12 and resistance to compression stake 13, and uplift pile 11 locates the below that prestresses the stake, and resistance to compression stake 13 locates the distance encorbelment the nearest frame pile's of truss below, foundation pile 12 locates between uplift pile 11 and the resistance to compression stake 13.
To the utility model discloses a scaffold puts up the structure, works as the utility model discloses a after the concrete strength of structure of encorbelmenting greatly reached design strength 80%, remove the scaffold 15 under the truss of encorbelmenting.
In this embodiment, in order to improve the structural stability of the balance truss, the balance truss further includes a plurality of truss diagonal rods 6, one end of each truss diagonal rod 6 is fixedly connected with the upper cross beam 1, and the other end of each truss diagonal rod is fixedly connected with the lower cross beam 2.
The cantilever truss comprises an upper cantilever beam 8 extending outwards and horizontally from the upper cross beam 1, a lower cantilever beam 14 extending outwards and horizontally from the lower cross beam 2 and a plurality of cantilever columns 7, wherein the cantilever columns 7 are vertically arranged between the upper cantilever beam 8 and the lower cantilever beam 14. The cantilever truss further comprises a plurality of cantilever inclined rods 9, one ends of the cantilever inclined rods 9 are fixedly connected with the upper cantilever beam 8, and the other ends of the cantilever inclined rods are fixedly connected with the lower cantilever beam 14.
In this embodiment, the frame columns 5 are all steel reinforced concrete columns.
Provides a construction method of a large cantilever structure for balancing insufficient end pressure in the construction utility model, which comprises the following steps,
s1: the construction method comprises the following steps of constructing a foundation, a balance truss, an overhanging truss and a scaffold 15, wherein the balance truss is arranged on the foundation, the overhanging truss is arranged on the outer side of the balance truss, the scaffold 15 is arranged below the overhanging truss, the balance truss comprises an upper cross beam 1, a lower cross beam 2 and a plurality of frame columns 5, the upper cross beam 1 and the lower cross beam 2 are horizontally arranged at intervals, the plurality of frame columns 5 are vertically arranged at intervals, the top ends of the frame columns 5 are fixedly connected with the upper cross beam 1, the middle parts of the frame columns 5 are fixedly connected with the lower cross beam 2, the pretensioning columns 3, the rear welding columns 4 and the bottom ends of the frame columns 5 are fixedly connected with the foundation,
among the frame columns 5, two frame columns 5 which are farthest and next farthest from the cantilever truss are section steel columns;
s2: transversely cutting the frame column 5 farthest from the cantilever truss to form an upper pre-tensioning column 17 and a lower pre-tensioning column 20, and transversely cutting the frame column 5 second farthest from the cantilever truss to form an upper rear welding column and a lower rear welding column;
s3: a pretension node 16 is arranged between the upper rear welding column and the lower rear welding column, and an upper pretension column 17 and a lower pretension column 20 are welded in an equal strength mode;
s4: welding an upper rear welding column and a lower rear welding column with equal strength;
s5: pouring concrete into the frame column 5 farthest from the cantilever truss to form a pre-tensioning column 3, and pouring concrete into the frame column 5 second farthest from the cantilever truss to form a rear welding column 4;
s6: the scaffolding 15 is removed.
The above embodiments are merely examples and do not limit the scope of the present invention. These embodiments may be implemented in other various manners, and various omissions, substitutions, and changes may be made without departing from the technical spirit of the present invention.
Claims (10)
1. The utility model provides a structure of encorbelmenting greatly that is used for balanced end ballast not enough, its characterized in that includes basis, balanced truss, encorbelment truss and scaffold (15), balanced truss locate on the basis, the truss of encorbelmenting locate the outside of balanced truss, scaffold (15) locate under the truss of encorbelmenting, balanced truss include entablature (1), bottom end rail (2) and a plurality of frame post (5), entablature (1), bottom end rail (2) horizontal interval set up, a plurality of frame post (5) vertical interval set up, the top and entablature (1) fixed connection of frame post (5), the middle part and bottom end rail (2) fixed connection of frame post (5), the bottom and the basis fixed connection of frame post (5),
the frame column (5) farthest from the cantilever truss is a pre-tensioning column (3) formed by cutting and applying a pre-tensioning node (16), the frame column (5) second farthest from the cantilever truss is a post-welding column (4) formed by cutting and post-welding,
the middle part of the pretensioning column (3) is provided with a pretensioning node (16).
2. The cantilever structure for balancing the end undertension according to claim 1, wherein the pre-tension column (3) is a steel reinforced concrete column, the pre-tension column (3) comprises a pre-tension section steel column and concrete poured around the pre-tension section steel column, the pre-tension section steel column is cut to form an upper pre-tension column (17) and a lower pre-tension column (20),
the pretensioning node (16) comprises a pretensioning rib (18) and a first connecting steel plate (19), the top of the pretensioning rib (18) is connected with the bottom of the lower pretensioning column (20), the bottom of the pretensioning rib (18) is connected with the top of the lower pretensioning column (20), the top end of the first connecting steel plate (19) is connected with the bottom of the upper pretensioning column (17) in a welding mode, and the bottom end of the first connecting steel plate (19) is connected with the top end of the lower pretensioning column (20) in a welding mode.
3. The cantilever structure for balancing the insufficient end pressure according to claim 2, wherein the post-welded column (4) is a steel reinforced concrete column, the post-welded column (4) comprises a post-welded column section steel column and concrete poured around the post-welded column section steel column, the post-welded column section steel column after cutting comprises an upper post-welded column and a lower post-welded column, the post-welded column (4) further comprises a second connecting steel plate, and after the pre-tension node (16) is connected with the pre-tension section steel column, the bottom of the upper post-welded column and the top of the lower post-welded column are welded and fixed through the second connecting steel plate.
4. The cantilever structure for balancing the insufficient end ballast weight according to claim 1, wherein the foundation comprises a foundation layer (10) and a plurality of foundation fixing columns, and the tops of the foundation fixing columns are fixedly connected with the bottom surface of the foundation layer (10).
5. The cantilever structure for balancing the end underload according to claim 4, wherein the foundation fixing column comprises a pulling-resistant pile (11), a foundation pile (12) and a compression-resistant pile (13), the pulling-resistant pile (11) is arranged below the pre-stressed pile, the compression-resistant pile (13) is arranged below the frame pile nearest to the cantilever truss, and the foundation pile (12) is arranged between the pulling-resistant pile (11) and the compression-resistant pile (13).
6. The cantilever structure for balancing the deficiency of end weight according to claim 1, wherein the scaffold is removed after the concrete strength of the cantilever structure reaches 80% of the designed strength.
7. The cantilever structure for balancing the end pressure insufficiency of the claim 1, wherein, the balance truss further comprises a plurality of truss diagonal rods (6), one end of the truss diagonal rod (6) is fixedly connected with the upper cross beam (1), and the other end is fixedly connected with the lower cross beam (2).
8. The cantilever structure for balancing the insufficient end pressure according to claim 1, wherein the cantilever truss comprises an upper cantilever beam (8) horizontally extending outwards from the upper cross beam (1), a lower cantilever beam (14) horizontally extending outwards from the lower cross beam (2) and a plurality of cantilever columns (7), and the cantilever columns (7) are vertically arranged between the upper cantilever beam (8) and the lower cantilever beam (14).
9. The cantilever structure for balancing the insufficient end pressure weight as claimed in claim 8, wherein the cantilever truss further comprises a plurality of cantilever diagonal rods (9), one end of each cantilever diagonal rod (9) is fixedly connected with the upper cantilever beam (8), and the other end of each cantilever diagonal rod is fixedly connected with the lower cantilever beam (14).
10. The cantilever structure for balancing the deficiency of end ballast weight according to claim 1, wherein the frame columns (5) are all steel reinforced concrete columns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022911630.8U CN215211486U (en) | 2020-12-07 | 2020-12-07 | Large cantilever structure for balancing insufficient end pressure weight |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022911630.8U CN215211486U (en) | 2020-12-07 | 2020-12-07 | Large cantilever structure for balancing insufficient end pressure weight |
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| CN215211486U true CN215211486U (en) | 2021-12-17 |
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| CN202022911630.8U Active CN215211486U (en) | 2020-12-07 | 2020-12-07 | Large cantilever structure for balancing insufficient end pressure weight |
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