CN212583724U - Be used for interim broken line steelframe support system in underground - Google Patents
Be used for interim broken line steelframe support system in underground Download PDFInfo
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- CN212583724U CN212583724U CN202021247741.7U CN202021247741U CN212583724U CN 212583724 U CN212583724 U CN 212583724U CN 202021247741 U CN202021247741 U CN 202021247741U CN 212583724 U CN212583724 U CN 212583724U
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Abstract
The utility model discloses a be used for interim broken line steelframe support system in underground relates to mechanical construction technical field, including foundation ditch underground diaphragm wall, foundation ditch underground diaphragm wall bottom is provided with the bottom plate, and the bottom plate top is provided with the floor, is provided with permanent structure post between the floor, and the floor bottom surface of lower one deck is provided with a plurality of strong points along its central line direction, all is provided with interim supporting component of arch in the both sides of strong point between floor and the bottom plate, and interim supporting component of arch only is connected in strong point department with the floor. There is the problem that the operating expenses is high to prior art, the utility model discloses a reduce the duplicate configuration of reinforcing bar and the turnover of full hall scaffold and use, effectively reduce the operating expenses.
Description
Technical Field
The utility model relates to a machinery construction technical field, more specifically say, it relates to a be used for interim broken line steelframe support system in underground.
Background
Aiming at the problem that the underground bottom layer of a station is also used as a large circular shield starting assembly channel, the requirement of a non-column space is required in the construction stage, and under the conventional condition, temporary vertical supporting systems such as temporary steel columns and steel beams are arranged, so that the stress requirement under the non-column temporary working condition is met. The following disadvantages are mainly present:
1. the stress state of the temporary structure under the non-column temporary working condition is inconsistent with the stress state of the permanent structure, the temporary working condition and the permanent working condition are both considered for structural reinforcement, so that the reinforcement is increased, and meanwhile, a pile foundation is additionally arranged to transmit vertical concentrated load, so that the cost is increased;
2. in order to meet the temporary working condition, the full-space scaffold of the basement structure needs to be erected layer by layer from bottom to top according to the stress requirement, and the top plate is dismantled from top to bottom after being completed, so that the full-space scaffold with a large quantity is required for construction.
SUMMERY OF THE UTILITY MODEL
There is the problem that the operating expenses is high to prior art, the utility model aims at providing a be used for interim broken line steelframe support system in underground, make interim structural system atress unanimous with permanent structural system atress, reduce repeated arrangement of reinforcement, reduce the operating expenses.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a be used for interim broken line steelframe support system in underground, includes foundation ditch underground continuous wall, foundation ditch underground continuous wall bottom is provided with the bottom plate, the bottom plate top is provided with the floor, be provided with permanent structure post between the floor, the one deck is down the floor bottom surface is provided with a plurality of strong points along its central line direction, the floor with between the bottom plate in the both sides of strong point all are provided with the interim supporting component of arch, the interim supporting component of arch with the floor is only in strong point department connects.
Through the technical scheme, the temporary supporting component is connected with the floor slab only at the supporting point to support the floor slab, so that the stress state of the temporary structure of the supporting system is consistent with the stress state of the permanent structure before and after the temporary supporting component is detached, thereby reducing the repeated configuration of reinforcing steel bars and effectively reducing the manufacturing cost; and the individual layer floor is supported by interim supporting component to accomplish the construction back, can dismantle the full hall scaffold who is used for the construction of individual layer floor, be used for upwards building the floor, thereby realize the turnover use of full hall scaffold, reduce the operating expenses.
Furthermore, the temporary support assembly comprises a temporary inclined support rod, and the two ends of the temporary inclined support rod are respectively connected with the support point and the inner wall of the underground diaphragm wall of the foundation pit.
One end of the temporary inclined supporting rod, which is close to the supporting point, is an upper end, and the other end of the temporary inclined supporting rod is a lower end.
Through the technical scheme, the two temporary inclined supporting rods are used for supporting the supporting points of the floor to form a triangular stable supporting structure, and the supporting strength of the supporting points is ensured to be enough.
Furthermore, an embedded part is embedded in the inner wall of the underground continuous wall of the foundation pit and fixed with the lower end of the temporary inclined supporting rod.
Through above-mentioned technical scheme, improve the joint strength of the lower extreme of interim slope bracing piece and foundation ditch underground continuous wall inner wall.
Furthermore, a pull rod is connected between the lower ends of the two temporary inclined supporting rods.
Through above-mentioned technical scheme, utilize the horizontal thrust of the interim bracing piece lower extreme that inclines of pull rod balance.
Furthermore, interim inclined support pole is the broken line form, the break point department of interim inclined support pole is fixed with the stiffening rod, the stiffening rod is kept away from interim inclined support pole one end with foundation ditch underground continuous wall inner wall connection.
Through above-mentioned technical scheme, reinforcing bar, interim slope bracing piece and foundation ditch underground continuous wall lateral wall form a plurality of triangle-shaped's stable structure, further improve the stability of braced system.
Further, a lining wall is poured in the foundation pit underground continuous wall, the two sides of the floor slab and the lining wall are integrally arranged, a pre-buried object is pre-buried in the inner wall of the lining wall, and the pre-buried object is connected with the reinforcing rod.
Through above-mentioned technical scheme, improve the joint strength of reinforcement pole and foundation ditch underground continuous wall inner wall.
Furthermore, a reserved connector convenient for subsequent connection of the stand columns is arranged on the bottom surface of the floor slab at the supporting point.
Through above-mentioned technical scheme, reserve the stand and the floor joint support that the ware of plugging into is convenient for follow-up pouring.
Furthermore, the floor bottom surface is provided with in the strong point department and is convenient for connect the tie-beam of interim supporting component, reserve the connector set up in the tie-beam is close to in the one end of bottom plate.
Through the technical scheme, the connecting beam is convenient for the connection and the support of the temporary supporting assembly at the supporting point.
Further, a plurality of the supporting points are arranged along the central line direction of the floor slab.
Through above-mentioned technical scheme, be convenient for distribute the weight of floor to every pair of interim supporting component, ensure the stability that the floor supported.
A construction method for an underground temporary broken line steel frame support system comprises the following steps:
s1, constructing a bottom plate;
s2, installing a temporary support assembly to form an arch support structure, and installing a joint at the end of the pull rod;
s3, constructing a lining wall at the bottom layer, and installing out-of-plane supports, pull rods and reinforcing rods of the temporary support assembly;
s4, erecting full scaffold, and constructing a floor slab at the arch crown of the arch frame structure; after the floor construction is finished, removing corresponding horizontal supports at the floor, removing full-hall scaffold, transferring the full-hall scaffold, and sequentially constructing a plurality of floors and lining walls of corresponding floors upwards;
s5, sequentially removing the full scaffold and the corresponding original concrete supporting structure from top to bottom;
and S6, after the shield is lifted out, post-pouring the stand column, and after the strength meets the design requirement, constructing and detaching the temporary supporting assembly.
By the technical scheme, the stress state of the temporary structure is consistent with that of the permanent structure under the non-column temporary working condition, so that the use of reinforcing bars is reduced, and the construction cost is reduced; the full hall scaffold of floor construction can dismantle the multilayer floor that is used for upwards constructing after accomplishing the construction, realizes full hall scaffold's turnover use, reduces the operating expenses.
Compared with the prior art, the beneficial effects of the utility model are that:
(1) before and after the temporary supporting assembly is disassembled, the stress state of the temporary structure of the supporting system is consistent with that of the permanent structure, so that repeated configuration of reinforcing steel bars is reduced, and the manufacturing cost is effectively reduced;
(2) the single-layer floor is supported by the temporary support assembly, and after construction is completed, full-space scaffold for single-layer floor construction can be detached and used for building floors upwards, so that the full-space scaffold can be recycled, and construction cost is reduced;
(3) furthermore, a plurality of triangular stable structures are formed by the reinforcing rods, the temporary inclined supporting rods and the side walls of the underground diaphragm wall of the foundation pit, and the stability of the supporting system is further improved.
Drawings
FIG. 1 is a schematic view of a prior art support structure;
fig. 2 is a schematic structural diagram of the present invention;
fig. 3 is a schematic structural diagram of the supporting point in the present invention.
Reference numerals: 1. a foundation pit underground diaphragm wall; 2. a base plate; 3. a floor slab; 4. a support point; 5. temporarily tilting the support bar; 6. embedding parts; 7. a pull rod; 8. a reinforcing bar; 9. lining a wall; 10. pre-burying an object; 11. reserving a connector; 12. and connecting the beams.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The utility model provides a be used for interim broken line steelframe support system in underground, as shown in fig. 2 and 3, include the underground continuous wall 1 of foundation ditch that is formed by underground continuous wall, 1 bottom of underground continuous wall of foundation ditch is formed with bottom plate 2 by concrete placement, 2 tops of bottom plate are provided with floor 3, be provided with permanent structure post between floor 3, 3 bottom surfaces of floor of lower floor are provided with a plurality of strong points 4 along its length direction central line, all be provided with interim supporting component in the both sides of strong point 4 between floor 3 and the bottom plate 2, form the bow-tie structure, interim supporting component is connected in strong point 4 department with floor 3 only.
Because the temporary supporting component is connected with the floor slab 3 only at the supporting point 4 to support the floor slab 3, the stress state of the temporary structure of the supporting system is consistent with that of the permanent structure before and after the temporary supporting component is dismantled, thereby reducing the repeated configuration of reinforcing steel bars and effectively reducing the manufacturing cost; and 3 construction backs of individual layer floor can be used for upwards building the floor with full hall scaffold to realize the turnover use of full hall scaffold, reduce the operating expenses.
The temporary supporting component comprises a temporary inclined supporting rod 5, two ends of the temporary inclined supporting rod are respectively connected with a supporting point 4 and the inner wall of the underground diaphragm wall 1 of the foundation pit, wherein one end, close to the supporting point 4, of the temporary inclined supporting rod 5 is the upper end, and the other end of the temporary inclined supporting rod is the lower end. The two temporary inclined support rods 5 are used for supporting the support points 4 of the floor slab 3 to form a triangular stable support structure, and the support strength of the support points 4 is ensured to be sufficient. The embedded part 6 is embedded in the inner wall of the foundation pit underground continuous wall 1, the embedded part 6 is located close to the bottom plate 2, and the embedded part 6 is fixed with the lower end of the temporary inclined support rod 5 so as to improve the connection strength between the lower end of the temporary inclined support rod 5 and the foundation pit underground continuous wall 1. A pull rod 7 is connected between the lower ends of the two temporary inclined support rods 5 to balance the horizontal thrust of the lower ends of the temporary inclined support rods 5.
Interim bracing piece 5 that inclines is the broken line form, and the break point department of interim bracing piece 5 that inclines is fixed with stiffening rod 8, and stiffening rod 8, interim bracing piece 5 that inclines all adopt H shaped steel, and 1 inboard in the foundation ditch underground continuous wall has pour interior headwall 9 between bottom plate 2 and floor 3, and the both sides and the integrative setting of headwall 9 of floor 3, and the preburied thing 10 that is provided with of interior headwall 9 inner wall, preburied thing 10 is connected with stiffening rod 8. Reinforcing bar 8, interim slope bracing piece 5 and 1 lateral wall of foundation ditch underground continuous wall form the stable structure of a plurality of triangle-shaped shapes, further improve the utility model discloses support system's stability.
In addition, for the stability of guaranteeing interim supporting component outside the plane, interim supporting component's both sides still are provided with vertical horizontal support system, are formed by angle steel or oblique pull reinforcing bar, further improve interim supporting component's support stability.
The bottom surface of the floor slab 3 is provided with a connecting beam 12 convenient for connecting temporary supporting components at the supporting points 4, the connecting beam 12 is formed by casting concrete in situ, one end of the connecting beam 12 close to the bottom plate 2 is provided with a reserved connector 11 convenient for subsequent connection of stand columns, and the reserved connector 11 is an existing device.
A construction method for an underground temporary broken line steel frame support system is shown in figures 2 and 3, and comprises the following steps:
s1, constructing the concrete bottom plate 2;
s2, installing a temporary support assembly to form an arch support structure, and installing a joint at the end of the pull rod 7;
s3, constructing a lining wall 9 at the bottom layer, and installing the out-of-plane support of the temporary support assembly, the pull rod 7 and the reinforcing rod 8;
s4, erecting full scaffold, and constructing a floor slab 3 at the arch crown of the arch frame structure; after the floor slab 3 is constructed, removing corresponding horizontal supports at the floor slab 3, removing full-space scaffold, using the full-space scaffold in a circulating manner, and sequentially constructing a plurality of floor slabs 3 and lining walls 9 of corresponding floors upwards;
s5, sequentially removing the full scaffold and the corresponding original concrete supporting structure from top to bottom;
and S6, after the shield is lifted out, post-pouring the stand column, and after the strength meets the design requirement, constructing and detaching the temporary supporting assembly.
In summary, the following steps:
when the utility model is used, the stress state of the temporary structure of the supporting system is consistent with the stress state of the permanent structure before and after the temporary supporting component is removed, thereby reducing the repeated configuration of the reinforcing steel bars and effectively reducing the manufacturing cost; and 3 construction backs of individual layer floor can be used for upwards building the floor with full hall scaffold to realize the turnover use of full hall scaffold, reduce the operating expenses.
The hunch foot is connected with underground continuous wall through burying the piece, with interim vertical load transmission to ground wall, need not add in addition and establishes the pile foundation. A steel pull rod 7 is arranged between the two arch legs to balance the horizontal thrust of the temporary broken line steel arch frame. The temporary broken line steel frame supporting system effectively solves the problem that the stress state of the temporary structure is inconsistent with that of the permanent structure in the prior art, reduces repeated configuration of reinforcing steel bars, and effectively reduces manufacturing cost.
Meanwhile, by utilizing the design concept of the stiff steel structure node, the crossed node of the broken line steel arch frame and the concrete beam is designed, so that the stress requirement of the temporary structure is met, and the column-free space requirement in the shield construction stage is also met.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (9)
1. The utility model provides a be used for interim broken line steelframe support system in underground, includes foundation ditch underground continuous wall (1), foundation ditch underground continuous wall (1) bottom is provided with bottom plate (2), bottom plate (2) top is provided with floor (3), a serial communication port, be provided with permanent structure post between floor (3), the one deck is at the bottom floor (3) bottom surface is provided with a plurality of strong points (4) along its central line direction, floor (3) with between bottom plate (2) in the both sides of strong point (4) all are provided with interim supporting component of arch, interim supporting component of arch with floor (3) only are in strong point (4) department connects.
2. The underground temporary broken line steel frame supporting system for the foundation pit according to claim 1, wherein the temporary supporting assembly comprises a temporary inclined supporting rod (5) with two ends respectively connected with the supporting point (4) and the underground continuous wall (1) of the foundation pit;
one end of the temporary inclined supporting rod (5) close to the supporting point (4) is an upper end, and the other end of the temporary inclined supporting rod is a lower end.
3. The underground temporary broken line steel frame supporting system for the foundation pit as claimed in claim 2, wherein an embedded part (6) is embedded in the underground diaphragm wall (1) of the foundation pit, and the embedded part (6) is fixed with the lower end of the temporary inclined supporting rod (5).
4. The underground temporary fold line steel frame support system as claimed in claim 2 or 3, wherein a pull rod (7) is connected between the lower ends of the two temporary inclined support rods (5).
5. The underground temporary fold line steel frame support system for the foundation pit according to claim 2, wherein the temporary inclined support rod (5) is in a fold line shape, a reinforcing rod (8) is fixed at a fold point of the temporary inclined support rod (5), and one end, far away from the temporary inclined support rod (5), of the reinforcing rod (8) is connected with the inner wall of the foundation pit underground continuous wall (1).
6. The underground temporary fold line steel frame support system for the foundation pit underground continuous wall (1) is characterized in that an inner lining wall (9) is poured in the foundation pit underground continuous wall (1), two sides of the floor slab (3) are integrally arranged with the inner lining wall (9), embedded objects (10) are embedded in the inner wall of the inner lining wall (9), and the embedded objects (10) are connected with the reinforcing rods (8).
7. The underground temporary fold line steel frame support system as claimed in claim 1, wherein the bottom surface of the floor slab (3) is provided with a reserved connector (11) for facilitating subsequent connection of the upright column at the support point (4).
8. The underground temporary fold line steel frame support system as claimed in claim 7, wherein the bottom surface of the floor slab (3) is provided with a connecting beam (12) at the supporting point (4) for connecting the temporary supporting component conveniently, and the reserved connector (11) is arranged in one end of the connecting beam (12) close to the bottom plate (2).
9. The underground temporary fold line steel frame support system according to claim 1, wherein a plurality of support points (4) are arranged along the central line direction of the floor slab (3).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021247741.7U CN212583724U (en) | 2020-06-30 | 2020-06-30 | Be used for interim broken line steelframe support system in underground |
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| CN202021247741.7U CN212583724U (en) | 2020-06-30 | 2020-06-30 | Be used for interim broken line steelframe support system in underground |
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| CN212583724U true CN212583724U (en) | 2021-02-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323132A (en) * | 2021-06-11 | 2021-08-31 | 中国五冶集团有限公司 | Large-volume concrete double-layer reinforcing steel bar support replacing, installing and constructing method |
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- 2020-06-30 CN CN202021247741.7U patent/CN212583724U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113323132A (en) * | 2021-06-11 | 2021-08-31 | 中国五冶集团有限公司 | Large-volume concrete double-layer reinforcing steel bar support replacing, installing and constructing method |
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