CN212026317U - Connection structure based on piled raft foundation sets up tower crane foundation - Google Patents
Connection structure based on piled raft foundation sets up tower crane foundation Download PDFInfo
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- CN212026317U CN212026317U CN202020544258.9U CN202020544258U CN212026317U CN 212026317 U CN212026317 U CN 212026317U CN 202020544258 U CN202020544258 U CN 202020544258U CN 212026317 U CN212026317 U CN 212026317U
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Abstract
The utility model discloses a connecting structure for arranging a tower crane foundation based on a piled raft foundation, which comprises a pile foundation, a tower crane foundation connected to the top of the pile foundation, a raft foundation connected to the periphery of the tower crane foundation and positioned at the top of the pile foundation, a tower crane embedded section connected to the interior of the tower crane foundation and a group of standard sections connected to the upper part of the tower crane embedded section; the tower crane foundation contains the basis body, connects in the inside column foot reinforcing bar of basis body, connects in the stagnant water board of basis body side and the dowel bar of interval setting at basis body side and top. During construction, the tower crane foundation is arranged in the raft foundation, so that the requirements of tower crane performance and bearing capacity can be met; the tower crane foundation is convenient and quick to construct, the tower crane can be installed and used as early as possible, the construction efficiency of the raft foundation is improved, and the construction period is shortened; through the design respectively of tower crane foundation top layer reinforcing bar and bottom reinforcing bar, utilize original raft foundation reinforcing bar as tower crane foundation bottom reinforcing bar, both save material and satisfy the wholeness again.
Description
Technical Field
The utility model belongs to tower crane construction field, in particular to connection structure based on piled raft foundation sets up tower crane foundation.
Background
In building construction, a tower crane is the most widely applied construction equipment as a vertical transportation tool, and the tower crane foundation is the most important in tower crane installation. General tower crane basis needs great space if setting up alone, occupies the construction place, and the installation intensity of basis needs special design, and construction cost and time are great.
In the existing construction process, a tower crane foundation is arranged under the bottom elevation of a raft bottom plate, but the earth excavation around a pile foundation is needed, on one hand, the excavation of the earth inevitably shortens the pile length, and the pile length is inconsistent with the design; on the other hand, when earth backfilling is carried out after construction is finished, undisturbed soil at the position can be changed, and the stress of the pile at the bottom of the foundation is not facilitated. And the ultra-thick bottom plate of the construction part is used as a tower crane foundation, the height of a foundation formwork is high, lateral formworks are difficult to support, the construction period is long, vertical construction through seams exist between the foundation bottom plate constructed firstly and the foundation bottom plate constructed later, the whole continuity is poor, and the whole stress of the ultra-thick large bottom plate is not facilitated. There is also the design as the tower crane foundation through raft foundation, but to in the stake raft foundation, not only lack the application design to the pile foundation, and lack raft foundation and tower crane foundation's combined application design.
SUMMERY OF THE UTILITY MODEL
The utility model provides a connection structure based on piled raft foundation sets up tower crane foundation for less occupation construction site, tower crane foundation utilize the common load of piled raft foundation and save time limit for a project and reinforcing bar quantity technical problem when solving tower crane foundation setting installation.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a connecting structure for arranging a tower crane foundation based on a piled raft foundation comprises a pile foundation, the tower crane foundation connected to the top of the pile foundation, a raft foundation connected to the periphery of the tower crane foundation and located at the top of the pile foundation, a tower crane embedded section connected to the interior of the tower crane foundation and a group of standard sections connected to the upper part of the tower crane embedded section;
the tower crane foundation comprises a foundation body, tower foundation steel bars connected inside the foundation body, water stop plates connected to the side faces of the foundation body and inserted bars arranged on the side faces and the top of the foundation body at intervals;
the column foot reinforcing bar is connected with corresponding pile foundation reinforcing bar or for pile foundation reinforcing bar reservation, the anchor bar anchor is gone into in the adjacent raft foundation of back construction.
Further, the pile foundation comprises a pile body, a pile vertical rib connected inside the pile body and a pile hoop rib connected inside the pile body and positioned outside the pile vertical rib; the stake is erected the muscle height and is greater than design pile foundation height, and the stake is erected the muscle top and is stretched into inside the tower crane foundation.
Further, the stake is erected the muscle and is anchored tower crane the basis with the form of curved anchor, and anchor length is not less than 35 times's steel bar diameter, and pile foundation top surface embedding tower crane foundation thickness is not less than overburden thickness, and the overburden contains bed course, waterproof layer and protective layer.
Further, the tower footing reinforcing steel bars also comprise top layer reinforcing steel bars and bottom layer reinforcing steel bars, and the top layer reinforcing steel bars and the bottom layer reinforcing steel bars both comprise transverse ribs and longitudinal ribs; the distance and the diameter of the bottom layer of the reinforcing steel bars correspond to the distance and the diameter of the reinforcing steel bars designed in the raft foundation; the interval and the reinforcing bar diameter of top layer reinforcing bar correspond the interval and the diameter of the reinforcing bar of tower crane installation strength design.
Furthermore, the water stop plate is connected to the vertical side face of the tower crane foundation, and the water stop plate and the joint bars are arranged at intervals; the inserted bars are also connected to the top of the tower crane foundation at intervals.
Further, the tower crane embedded section comprises embedded section stand columns which are arranged in a square shape, embedded section connecting rods connected between adjacent embedded section stand columns, and embedded section supports connected to the bottom of each embedded section stand column; the top of the embedded section upright post extends out of the tower crane foundation; the pre-buried festival connecting rod contains crossbeam and bracing.
Furthermore, the embedded joint support comprises a square frame consisting of four upright posts and transverse connecting rods, an upper connecting plate connected to the top of the square frame and a square bottom plate connected to the bottom of each upright post of the square frame.
Furthermore, the standard knot comprises standard knot stand columns arranged in a square shape and standard knot connecting rods connected between the adjacent standard knot stand columns, and each standard knot connecting rod comprises a transverse connecting rod and an inclined strut; the mark section upright post is arranged corresponding to the embedded section upright post and is detachably connected.
Furthermore, layered pouring is carried out when the concrete of the tower crane foundation is poured, the pouring thickness of each layer is not more than 500mm, and 100mm is inserted below the concrete joint of the two layers for secondary vibration.
The beneficial effects of the utility model are embodied in:
1) the tower crane foundation is arranged in the raft foundation area, wherein the tower crane foundation is constructed according to the requirements of tower crane performance and bearing capacity, and the construction is convenient and rapid; and the installed tower crane can be used for hoisting and transporting the reinforcing steel bars during the subsequent construction of the raft foundation slab, so that the construction efficiency is greatly improved, and the construction period is shortened;
2) the utility model meets the pile length requirement of pile foundation design by constructing the tower crane foundation on the top of the pile foundation, and does not disturb the original state soil, thereby ensuring the bearing capacity of the pile body; the side surface and the upper surface of the tower crane foundation are provided with the dowel bars, so that the reliable connection with a raft foundation in subsequent construction is ensured, and the integrity of the raft foundation is ensured; the pile vertical ribs in the pile foundation are anchored into the tower crane foundation, so that materials can be saved, the pile foundation and the tower crane foundation can be integrally poured, and the integrity of a connecting structure is further ensured;
3) the utility model discloses a top layer reinforcing bar and bottom layer reinforcing bar design respectively in the tower crane foundation, the bottom layer reinforcing bar can be used as the reinforcing bar of raft foundation, the top layer reinforcing bar can satisfy the force requirement according to the tower crane installation intensity setting;
in addition, when the tower crane is constructed, the joint bars and the water stop plates are reserved on the tower crane foundation, so that the integration of the tower crane foundation and a raft foundation poured later can be ensured; additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention; the primary objects and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description.
Drawings
FIG. 1 is a schematic view of the construction of a connection structure for arranging a tower crane foundation based on a piled raft foundation;
FIG. 2 is a schematic view of a connection structure of a tower crane embedded section and a standard section;
FIG. 3 is a schematic diagram of a tower crane foundation structure;
FIG. 4 is a top view of a tower crane foundation structure connection structure;
FIG. 5 is a top view of a connection structure of a piled raft foundation, a tower crane foundation and a tower crane embedded section;
FIG. 6 is a schematic view of a water stop plate;
FIG. 7 is a schematic view of a connection structure of a pile foundation and a tower crane foundation.
Reference numerals: 1-raft foundation, 2-pile foundation, 21-pile body, 22-pile stirrup, 23-pile vertical bar, 3-tower crane foundation, 31-foundation body, 32-tower foundation steel bar, 321-bottom steel bar, 322-top steel bar, 33-water stop plate, 34-inserted bar, 4-tower crane embedded section, 41-embedded section upright post, 42-embedded section connecting rod, 43-embedded section support, 5-standard section, 51-standard section upright post, 52-standard section connecting rod and 6-covering layer.
Detailed Description
Use installation tower crane on certain super thick raft foundation 1 and pile foundation 2 as an example, as shown in fig. 1, at the inside connection structure who sets up the tower crane foundation of piled raft foundation, contain pile foundation 2, connect in the tower crane foundation 3 at pile foundation 2 tops, connect in 3 tower crane foundations around and be located the raft foundation 1 at pile foundation 2 tops, connect in 3 inside tower crane pre-buried sections 4 of tower crane foundation and connect in a set of standard section 5 on the pre-buried section 4 upper portion of tower crane.
As shown in fig. 2, the tower crane embedded section 4 is made of steel, and includes embedded section columns 41 arranged in a square shape, embedded section connecting rods 42 welded or bolted between adjacent embedded section columns 41, and embedded section supports 43 welded or bolted to the bottom of each embedded section column 41. The top of the pre-buried section upright post 41 extends out of the tower crane foundation 3. The pre-buried festival connecting rod 42 contains crossbeam and bracing, and crossbeam welding or bolted connection are in the top and the bottom of adjacent stand perpendicularly, and bracing welding or bolted connection are between two upper and lower crossbeams.
As shown in fig. 3, the tower footing reinforcing steel bars 32 further include top reinforcing steel bars 322 and bottom reinforcing steel bars 321, and both the top reinforcing steel bars 322 and the bottom reinforcing steel bars 321 include transverse bars and longitudinal bars; the distance and the diameter of the bottom layer reinforcing steel bars 321 correspond to the distance and the diameter of the reinforcing steel bars designed in the raft foundation 1; the interval and the diameter of top layer reinforcing bar 322 correspond the interval and the diameter of the reinforcing bar of tower crane installation strength design.
In this embodiment, the embedded joint support 43 includes a square frame composed of four steel upright posts and transverse rigid connecting rods, a steel upper connecting plate connected to the top of the square frame, and a square steel bottom plate connected to the bottom of each upright post of the square frame; the upper connecting plate of the embedded section support 43 is welded with the embedded section upright post 41.
In this embodiment, the standard knot 5 is a tower crane standard knot 5, the standard knot 5 comprises standard knot upright posts 51 arranged in a square shape and standard knot connecting rods 52 connected between the adjacent standard knot upright posts 51, and the standard knot connecting rods 52 comprise cross connecting rods and inclined struts; the standard section upright post 51 is arranged corresponding to the embedded section upright post 41 and is connected with the embedded section upright post through bolts.
As shown in fig. 4 and 5, the tower crane foundation 3 is octagonal, and the corresponding pile foundations 2 under the tower crane foundation 3 are distributed in an axisymmetric diamond shape. The tower crane foundation 3 comprises a concrete poured foundation body 31, tower foundation reinforcing steel bars 32 connected to the inside of the foundation body 31, water stop plates 33 connected to the side surfaces of the foundation body 31 and inserting bars 34 arranged on the side surfaces and the top of the foundation body 31 at intervals; the column foot reinforcing bar 32 with correspond pile foundation 2 steel bar connection or reserve for pile foundation 2 steel bar, dowel 34 and adjacent raft foundation 1 steel bar connection.
As shown in fig. 6, the water stop plate 33 is made of a steel plate, the water stop plate 33 is an inverted U-shaped plate, and the internal angle between the two side plates and the horizontal plate is 120 degrees. The water stop plates 33 are connected to the vertical two sides of the tower crane foundation 3, and the water stop plates 33 and the joint bars 34 are arranged at intervals. In addition, the dowel bars 34 are also connected to the top of the tower crane foundation 3 at intervals.
As shown in fig. 7, the pile foundation 2 includes a concrete-cast pile body 21, a pile vertical rib 23 connected to the inside of the pile body 21, and a pile stirrup 22 connected to the inside of the pile body 21 and located outside the pile vertical rib 23. The pile erects muscle 23 height and is greater than the design pile foundation 2 height, and the pile erects muscle 23 top and stretches into tower crane foundation 3 inside. During construction, the pile vertical ribs 23 are anchored into the tower crane foundation 3 in a bent anchor mode, the anchoring length is not less than 35 times of the diameter of the steel bar, and the thickness of the top surface of the pile foundation 2 embedded into the tower crane foundation 3 is not less than the thickness of the covering layer 6.
With reference to fig. 1 to 7, a construction method for setting a connection structure of a tower crane foundation based on a piled raft foundation is further described, which specifically comprises the following steps:
firstly, releasing an angular point of a tower crane foundation 3 at the design positions of a corresponding raft foundation 1 and a corresponding pile foundation 2, then releasing an outer edge line of the tower crane foundation 3, and determining the elevation of the tower crane foundation 3 according to the on-site standard elevation and relevant design requirements.
And step two, chiseling the concrete of the part above the designed elevation of the pile top to the designed elevation, anchoring the pile vertical ribs 23 into the tower crane foundation 3 in a bent anchor mode, wherein the anchoring length is not less than 35 times of the diameter of the steel bar, and the top surface of the pile foundation 2 is embedded into the tower crane foundation 3.
And step three, constructing a covering layer 6 comprising a cushion layer, a waterproof layer and a protective layer according to the released sideline, and requiring the pile head of the pile foundation 2 to extend out of the covering layer 6.
And step four, after the concrete of the covering layer 6 reaches the specified strength, binding bottom layer steel bars 321 in the tower crane foundation 3, before binding the bottom layer steel bars 321, firstly snapping lines on the covering layer 6, and then binding according to the lines.
And step five, after the bottom layer steel bars 321 of the tower foundation steel bars 32 are bound, pre-burying of the tower crane pre-buried section 4 is carried out according to the distance and materials marked by the specification of the tower crane, and the tower crane pre-buried section 4 can be used after being detected to be qualified.
And step six, after the bottom-layer steel bars 321 are bound, binding the top-layer steel bars 322 of the tower footing steel bars 32 according to the reinforcement allocation diagram, arranging the steel bar split heads before binding, then binding the top-layer steel bars 322 of the tower footing steel bars 32, and finally binding the top-layer steel bars 322 and the bottom-layer steel bars 321 together by using the draw hooks.
Seventhly, when the tower crane foundation 3 is poured, arranging reserved joint bars 34 on the side face and the top of the tower crane foundation 3 in a vertical direction, and arranging water stop plates 33 on the side face of the tower crane foundation 3; and after the concrete strength of the tower crane foundation 3 reaches the design strength, connecting a standard section 5 above the tower crane embedded section 4, and installing the tower crane. And after the tower crane is installed, the tower crane is used for assisting the construction of the subsequent raft foundation 1. And performing layered pouring when concrete of the tower crane foundation 3 is poured, wherein the pouring thickness of each layer is not more than 500 mm. When pouring, the next layer of concrete is poured before the initial setting of the previous layer of concrete, and 100mm is inserted below the joint of the two layers of concrete for secondary vibration, so that cold joints are avoided, and the compactness of the concrete is ensured. In addition, in the concrete pouring process, tower crane constructors monitor the integral flatness and positions of the standard section 5 and the tower crane embedded section 4 at any time, if any change occurs, the pouring is immediately stopped, the tower crane embedded section 4 and the standard section 5 are adjusted and reinforced, and the flatness and positions of the tower crane embedded section 4 and the standard section 5 are guaranteed to be kept in the concrete pouring process.
The concrete curing work should be carried out by a specially-assigned person, the concrete is covered within 12 hours after the pouring is finished, the moisture is preserved, the surface of the concrete is prevented from cracking, and the concrete curing time, related requirements and the like are carried out according to the regulation of the specification.
The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be considered by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention.
Claims (9)
1. A connecting structure for arranging a tower crane foundation based on a piled raft foundation is characterized by comprising a pile foundation (2), a tower crane foundation (3) connected to the top of the pile foundation (2), a raft foundation (1) connected to the periphery of the tower crane foundation (3) and located at the top of the pile foundation (2), a tower crane embedded section (4) connected to the interior of the tower crane foundation (3) and a group of standard sections (5) connected to the upper part of the tower crane embedded section (4);
the tower crane foundation (3) is characterized in that corresponding pile foundations (2) are distributed in an axial symmetry mode, and the tower crane foundation (3) comprises a foundation body (31), tower foundation reinforcing steel bars (32) connected to the inside of the foundation body (31), water stop plates (33) connected to the side faces of the foundation body (31) and inserting ribs (34) arranged on the side faces and the top of the foundation body (31) at intervals;
the column foot reinforcing bar (32) with correspond pile foundation (2) steel bar connection or for pile foundation (2) reinforcing bar reservation, dowel steel (34) anchor is gone into in the adjacent raft foundation (1) of back construction.
2. The connection structure for setting the tower crane foundation based on the piled raft foundation is characterized in that the pile foundation (2) comprises a pile body (21), a pile vertical rib (23) connected inside the pile body (21) and a pile stirrup (22) connected inside the pile body (21) and positioned outside the pile vertical rib (23); the height of the pile vertical rib (23) is larger than that of the designed pile foundation (2), and the top of the pile vertical rib (23) extends into the tower crane foundation (3).
3. The connection structure for arranging the tower crane foundation based on the piled raft foundation is characterized in that the pile vertical ribs (23) are anchored into the tower crane foundation (3) in the form of bent anchors, the anchoring length is not less than 35 times of the diameter of the steel bar, the thickness of the top surface of the pile foundation (2) embedded into the tower crane foundation (3) is not less than that of the covering layer (6), and the covering layer (6) comprises a cushion layer, a waterproof layer and a protective layer.
4. The connection structure for setting the tower crane foundation based on the piled raft foundation is characterized in that the tower foundation steel bars (32) further comprise top layer steel bars (322) and bottom layer steel bars (321), and the top layer steel bars (322) and the bottom layer steel bars (321) comprise transverse bars and longitudinal bars; the distance and the diameter of the bottom layer reinforcing steel bars (321) correspond to the distance and the diameter of the reinforcing steel bars designed in the raft foundation (1); the interval and the reinforcing bar diameter of top layer reinforcing bar (322) correspond the interval and the diameter of the reinforcing bar of tower crane installation strength design.
5. The connection structure for setting the tower crane foundation based on the piled raft foundation is characterized in that the water stop plate (33) is connected to the vertical side surface of the tower crane foundation (3), and the water stop plate (33) and the dowel bars (34) are arranged at intervals; the dowel bars (34) are also connected to the top of the tower crane foundation (3) at intervals.
6. The connection structure for setting the tower crane foundation based on the piled raft foundation is characterized in that the tower crane embedded sections (4) comprise embedded section upright columns (41) which are arranged in a square shape, embedded section connecting rods (42) connected between the adjacent embedded section upright columns (41), and embedded section supports (43) connected to the bottom of each embedded section upright column (41); the top of the embedded section upright post (41) extends out of the tower crane foundation (3); the embedded joint connecting rod (42) comprises a cross beam and an inclined strut.
7. The connection structure of the tower crane foundation based on the piled raft foundation is characterized in that the embedded joint support (43) comprises a square frame consisting of four upright posts and transverse connecting rods, an upper connecting plate connected to the top of the square frame and a square bottom plate connected to the bottom of each upright post of the square frame.
8. The connection structure for setting the tower crane foundation based on the piled raft foundation is characterized in that the standard joints (5) comprise standard joint upright posts (51) arranged in a square shape and standard joint connecting rods (52) connected between the adjacent standard joint upright posts (51), and the standard joint connecting rods (52) comprise cross connecting rods and inclined struts; the standard section upright post (51) is arranged corresponding to the embedded section upright post (41) and is detachably connected.
9. The connection structure of the tower crane foundation based on the piled raft foundation is characterized in that the tower crane foundation (3) is poured in layers when concrete is poured, the pouring thickness of each layer is not more than 500mm, and 100mm is inserted downwards at the joint of two layers of concrete for secondary vibration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020544258.9U CN212026317U (en) | 2020-04-14 | 2020-04-14 | Connection structure based on piled raft foundation sets up tower crane foundation |
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| CN202020544258.9U CN212026317U (en) | 2020-04-14 | 2020-04-14 | Connection structure based on piled raft foundation sets up tower crane foundation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116180824A (en) * | 2022-01-29 | 2023-05-30 | 武大巨成结构股份有限公司 | Foundation slab pile repairing construction method using self-locking anchor rod |
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2020
- 2020-04-14 CN CN202020544258.9U patent/CN212026317U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116180824A (en) * | 2022-01-29 | 2023-05-30 | 武大巨成结构股份有限公司 | Foundation slab pile repairing construction method using self-locking anchor rod |
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