CN211547797U - Tower crane foundation structure suitable for basement raft foundation - Google Patents
Tower crane foundation structure suitable for basement raft foundation Download PDFInfo
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- CN211547797U CN211547797U CN202020064237.7U CN202020064237U CN211547797U CN 211547797 U CN211547797 U CN 211547797U CN 202020064237 U CN202020064237 U CN 202020064237U CN 211547797 U CN211547797 U CN 211547797U
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Abstract
The utility model discloses a tower crane foundation structure suitable for basement raft foundation, including tower crane foundation ditch and tower crane foundation, the tower crane foundation top surface is as high as the bottom elevation of raft foundation, and the vertical four steel casings that are equipped with on the tower crane foundation, steel casing lower extreme anchor in the tower crane foundation and with tower crane foundation upper reinforcing bar welding, its upper end is as high as the top elevation of raft foundation, and steel casing inside is filled with concrete to constitute the steel-pipe column and once pour the shaping with the tower crane foundation through steel casing and concrete; a plurality of pre-buried foundation bolts for installing the tower crane vertically penetrate through each steel sleeve, the lower ends of the pre-buried foundation bolts vertically penetrate through the steel sleeves downwards and then are anchored into the middle lower portion of a tower crane foundation, and the upper ends of the pre-buried foundation bolts extend out of the top surface of each steel sleeve to be connected and installed with connecting ends corresponding to tower crane foundation sections. The utility model discloses well raft foundation can once only be the whole construction, has improved the efficiency of construction, has solved tower crane foundation reservation region reinforcement, water repellent and secondary hole filling scheduling problem.
Description
Technical Field
The utility model relates to a building field, concretely relates to tower crane foundation structure suitable for basement raft foundation.
Background
In recent years, with the continuous development of the building industry in China, the number of high-rise group buildings built in various large and medium-sized cities is increased day by day, raft projects of an integral garage are frequently seen, factors such as reduction of secondary carrying of building materials, transportation distance in the yard and the like are considered, a tower crane is often erected beside a main building, a conventional tower crane foundation is generally located on a foundation or a bearing platform foundation of a pile foundation at present and then is connected with a connecting end of a tower crane foundation section through pre-buried foundation bolts, and the technology is mature.
However, when a tower crane foundation located in a basement is constructed, foundation construction and installation are often performed on the tower crane foundation before earth excavation, so that the construction service for an underground structure is performed as early as possible, and therefore the conditions of overlapping and joint seams exist in the construction of the tower crane foundation and the raft foundation.
Although the construction method is definite in stress and convenient to construct, secondary construction of the post-cast strip is achieved, the area of the post-cast strip is small, the steel bars of the peripheral raft foundation need to be reserved in advance, and steel bar connection with the peripheral reserved steel bars needs to be carried out one by one during secondary construction of the reserved area.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: the utility model provides a tower crane foundation structure suitable for basement raft foundation need not consider tower crane foundation reservation, and raft foundation can once only be whole construction, has improved the efficiency of construction, has solved tower crane foundation reservation regional reinforcement, water repellent and secondary mend hole scheduling problem.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model provides a tower crane foundation structure suitable for basement raft foundation, includes tower crane foundation ditch and tower crane foundation, the tower crane foundation is located the tower crane foundation ditch and is the reinforced concrete structure that double-deck reinforcing bar arranged, and its top surface is equal high with the bottom elevation of raft foundation, the tower crane foundation goes up the vertical four steel sleeves that are equipped with, and steel sleeve lower extreme anchors in the tower crane foundation and with tower crane foundation upper strata steel bar welding, its upper end is equal high with the top elevation of raft foundation, wherein, steel sleeve inside is annotated with the concrete to constitute the steel-pipe column with the concrete and once pour the shaping with the tower crane foundation through steel sleeve, the external diameter of steel sleeve is greater than the link size of tower crane foundation festival, and four steel sleeves distribute on tower crane foundation horizontal plane and four link positions when tower crane foundation festival is installed are corresponding; a plurality of pre-buried foundation bolts for installing the tower crane vertically penetrate through each steel sleeve, the lower ends of the pre-buried foundation bolts vertically penetrate through the steel sleeves downwards and then are anchored into the middle lower portion of a tower crane foundation, and the upper ends of the pre-buried foundation bolts extend out of the top surface of each steel sleeve to be connected and installed with connecting ends corresponding to tower crane foundation sections.
The utility model discloses in the concrete work progress, including following step: (1) determining the installation position of the tower crane according to a construction drawing, and excavating a foundation pit of the tower crane; (2) arranging double-layer steel bars in a tower crane foundation pit, determining the corresponding positions of embedded foundation bolts according to a drawing for installing a connecting end of a tower crane foundation section, embedding four groups of embedded foundation bolts, respectively sleeving four steel sleeves outside each group of embedded foundation bolts, welding the lower ends of the steel sleeves with upper-layer steel bars in the tower crane foundation, enabling the top ends of the steel sleeves to be higher than a top standard of a raft foundation to be constructed, pouring concrete into the tower crane foundation pit until the concrete is flush with a pit surface of the tower crane foundation, pouring concrete into the steel sleeves after 10-20min, filling the steel sleeves with concrete until the steel sleeves are full of concrete, ensuring that the steel sleeves and the concrete of the tower crane foundation are integrally poured and molded, and finally leveling and maintaining the concrete; (3) after the tower crane foundation is maintained, the tower crane is installed when the strength of concrete reaches the standard, four connecting ends of a tower crane foundation section are fixedly connected with the embedded foundation bolts in the four corresponding steel sleeve pipes, the tower crane is installed, and the tower crane normally works to hoist materials; (4) in the course of construction of raft foundation in later stage, the shared space of steel sleeve in the tower crane installation region just can be walked around to raft foundation's few reinforcing bars of raft foundation only need small amplitude buckling, raft foundation cloth muscle accomplish the back, disposable construction raft foundation can.
Thus, after the pre-buried foundation bolt is arranged in the steel sleeve and is formed with the tower crane foundation by one-time pouring, a steel pipe column is formed, after the tower crane foundation section and the pre-buried foundation bolt of the steel pipe column are installed, because the anchoring depth of the pre-buried foundation bolt is unchanged, the steel pipe column is enclosed outside the part, extending out of the top surface of the tower crane foundation, of the pre-buried foundation bolt, the bending strength of the part, extending out of the tower crane foundation, of the pre-buried foundation bolt can be ensured, the outer diameter of the steel sleeve is slightly larger than the size of the connecting end of the tower crane foundation section, after the steel sleeve and concrete form the steel pipe column, the upper end surface of the steel pipe column is contacted with the connecting end of the tower crane foundation section, the contact area with the connecting end of the tower crane foundation section can be ensured, compared with the traditional mode of installing the, in the in-process at follow-up construction raft foundation, when raft foundation construction was located to the tower crane, can once only be under construction and accomplish for raft foundation in the tower crane installing zone need not like the conventionality reserved area, and carry out the secondary binding off, solved the interior reinforcement ligature of tower crane reserved area and do not accord with the construction quality problems such as standard, water repellent is inconvenient and the secondary mends the hole, when in-service use, can increase the size of the pre-buried rag bolt of former design, guarantee its atress.
As optimization, the steel sleeve is internally provided with a plurality of layers of criss-cross distribution ribs, and the distribution ribs are distributed on the peripheral sides of the embedded foundation bolts to limit the embedded foundation bolts so as to prevent the embedded foundation bolts from being dislocated during concrete pouring.
Like this, when the tower crane installation, it is very high to pre-buried rag bolt's required precision, through set up the distribution muscle in the steel casing, can ensure that pre-buried rag bolt does not take place to shift when concreting to guarantee pre-buried rag bolt's installation accuracy.
As optimization, building brick bed moulds on the side walls of the periphery of the tower crane foundation pit, and building the brick bed moulds to the height of the raft foundation base; tower crane foundation bed course that 100mm is thick is pour to tower crane foundation ditch bottom, and its top and brick fetal membrane inboard all are provided with the waterproof additional layer that the material is flexible waterproofing membrane.
Therefore, the brick masonry serves as an outer side template, compared with a conventional wood template, the brick masonry has high strength, is not easy to slip and expand, and does not need to be disassembled after construction, so that the strength of the tower crane foundation is enhanced, and the tower crane foundation is protected to a certain extent; the tower crane foundation bed course has certain guard action to the tower crane foundation, then through set up waterproof additional layer with the brick fetal membrane inboard on the tower crane foundation bed course, can play waterproof effect to the tower crane foundation, prevents that groundwater from getting into the tower crane foundation in, the reinforcing bar corrodes, influences the intensity of tower crane foundation.
As optimization, waterproof additional layer top is provided with the pea gravel concrete protective layer, tower crane foundation bottom is located the top of pea gravel concrete protective layer.
In this way, by providing the fine aggregate concrete protective layer, it is possible to prevent a sharp object from piercing the waterproof additional layer to destroy the waterproof property thereof, and the thickness of the fine aggregate concrete protective layer is usually set to 50mm to 70 mm.
And optimally, a plurality of horizontally arranged water stop rings are welded on the outer wall of the steel sleeve, and the plurality of water stop rings are sleeved on the steel sleeve and distributed at equal intervals along the axial direction of the steel sleeve.
Like this, through setting up the seal ring, the route of extension water infiltration, greatly increased the infiltration resistance, waterproof performance between when ensureing follow-up raft foundation construction and the steel casing pipe, simultaneously through the setting of seal ring, when the concrete of follow-up raft foundation of pouring, seal ring and steel casing pipe have constituted the function of horse tooth raft, have strengthened the associativity of steel casing pipe with raft foundation, raft foundation has played the additional strengthening to the stability of steel casing pipe to tower crane work is safer.
For optimization, a horizontal steel bracket is arranged in an area enclosed by the four steel sleeves to limit the steel sleeves; the steel bracket is composed of two rigid connecting rods with the middle parts crossed and welded, and four end points of the steel bracket are respectively welded and fixed with the corresponding steel sleeves.
Thus, during actual construction, the rigid connecting piece is generally made of I-shaped steel, the strength can be ensured, when the concrete of the tower crane foundation is poured, because the foundation pit of the tower crane foundation is generally deep, large-volume concrete pouring is involved, the concrete can be vibrated for many times, the welding stability of the steel sleeve and the reinforcing steel bar of the tower crane foundation is not high enough, the steel sleeve is likely to be displaced by the vibration effect of the concrete, the positions of the four steel sleeves are limited and fixed by arranging the steel bracket, the embedded foundation bolts in the steel sleeves cannot be moved correspondingly, the installation precision of a subsequent tower crane is ensured, more importantly, before the subsequent raft foundation is not constructed, when the tower crane is installed on the tower crane foundation to work, the shearing force (wind force and hoisting force) is large, and in order to ensure the anti-overturning capacity of the tower crane, the steel bracket has a transverse supporting and limiting effect on the steel sleeve, the anti-overturning capacity of the tower crane is improved.
Preferably, the connecting point of the steel bracket and the steel sleeve is positioned in the middle of the steel sleeve.
Like this, when subsequent raft foundation construction, raft foundation has upper and lower layer reinforcing bar, lies in the middle part position of steel casing pipe with the tie point of steel support and steel casing pipe, staggers with the upper and lower layer reinforcing bar of raft foundation like this, can not influence arranging of raft foundation reinforcing bar, and steel support contacts with the middle part position of steel casing pipe simultaneously, and the upper and lower both ends atress of steel casing pipe is more steady like this, is difficult to empty.
To sum up, the beneficial effects of the utility model reside in that: through set up the steel-pipe column on tower crane foundation, the in-process of follow-up construction raft foundation, when raft foundation construction was located to the tower crane, can once only be under construction and accomplish, it need not like conventional reservation region to make raft foundation in the tower crane installing zone, and carry out the secondary binding off, it is not conform to the standard to have solved the interior reinforcement ligature of tower crane reservation region, the waterproof treatment is inconvenient and construction quality problems such as secondary mends the hole, when in-service use, can increase the size of the pre-buried rag bolt of former design, guarantee its atress.
Drawings
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of A in FIG. 1;
fig. 3 is a top view of fig. 1.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Reference numerals in the drawings of the specification include: the tower crane foundation comprises a tower crane foundation 1, a tower crane foundation cushion layer 2, a waterproof additional layer 3, a brick moulding bed 4, pre-buried foundation bolts 5, a water stop ring 6, a steel sleeve 7, distribution ribs 8, a tower crane foundation section 9 and a raft foundation 10.
In the specific embodiment, the tower crane foundation structure suitable for the basement raft foundation comprises a tower crane foundation pit and a tower crane foundation 1 as shown in fig. 1, fig. 2 and fig. 3, the tower crane foundation 1 is positioned in a tower crane foundation pit and is of a reinforced concrete structure with double layers of steel bars, the top surface of the tower crane is equal to the height of the bottom elevation of a raft foundation 10 to be constructed, four steel sleeves 7 are vertically arranged on the tower crane foundation 1, the lower ends of the steel sleeves 7 are anchored in the tower crane foundation 1 and welded with upper-layer steel bars of the tower crane foundation 1, the upper end of the steel sleeve 7 is equal to the top elevation of the raft foundation 10 to be constructed, wherein the steel sleeve 7 is filled with concrete, forming a steel pipe column by steel sleeves 7 and concrete and pouring the steel pipe column and the tower crane foundation 1 at one time, wherein the outer diameter of each steel sleeve 7 is larger than the size of a connecting end of a tower crane foundation section 9, and the distribution of the four steel sleeves 7 on the horizontal plane of the tower crane foundation 1 corresponds to the positions of four connecting ends when the tower crane foundation section 9 is installed; a plurality of pre-buried foundation bolts 5 for installing the tower crane are vertically arranged in each steel sleeve 7 in a penetrating mode, the lower ends of the pre-buried foundation bolts 5 vertically penetrate through the steel sleeve 7 downwards and then are anchored into the middle lower portion of the tower crane foundation 1, and the upper ends of the pre-buried foundation bolts extend out of the top face of the steel sleeve 7 to be connected and installed with connecting ends corresponding to tower crane foundation sections 9.
The utility model discloses in the concrete work progress, including following step: (1) determining the installation position of the tower crane according to a construction drawing, and excavating a foundation pit of the tower crane; (2) arranging double-layer steel bars in a tower crane foundation pit, paying off according to a drawing for installing a connecting end of a tower crane foundation section to determine the corresponding position of a pre-embedded foundation bolt 5, pre-embedding four groups of pre-embedded foundation bolts 5, respectively sleeving four steel sleeves 7 on the outer side of each group of pre-embedded foundation bolts, welding the lower end of each steel sleeve 7 with an upper layer steel bar in a tower crane foundation 1, pouring concrete into the steel sleeves 7 until the top end of each steel sleeve 7 is higher than the top mark of a raft foundation 10 to be constructed, pouring the concrete into the foundation pit tower crane until the concrete is flush with the pit surface of the tower crane foundation, pouring the concrete into the steel sleeves 7 after 10-20min, filling the concrete into the steel sleeves 7 until the steel sleeves 7 are filled with the concrete, ensuring that the steel sleeves 7 and the concrete of the tower crane foundation are integrally poured; (3) after the tower crane foundation is maintained, the tower crane is installed when the strength of concrete reaches the standard, four connecting ends of a tower crane foundation section 9 are fixedly connected with the embedded foundation bolts 5 in the corresponding four steel sleeve pipes 7, the tower crane is installed, and materials are hoisted during normal operation of the tower crane; (4) in the course of construction of raft foundation 10 in later stage, the shared space of steel sleeve 7 in the tower crane installation region just can be walked around to raft foundation 10's few reinforcing bars only need small amplitude bending, and raft foundation arrangement of reinforcement is accomplished the back, disposable construction raft foundation 10 can.
Thus, after the pre-embedded foundation bolt 5 is arranged in the steel sleeve 7 and is formed with the tower crane foundation 1 by one-time pouring, a steel pipe column is formed, after the tower crane foundation section 9 is installed with the pre-embedded foundation bolt 5 of the steel pipe column, because the anchoring depth of the pre-embedded foundation bolt 5 is not changed, the steel pipe column is enclosed outside the pre-embedded foundation bolt 5 extending out of the tower crane foundation part, the bending strength of the pre-embedded foundation bolt 5 extending out of the tower crane foundation top surface part can be ensured, the outer diameter of the steel sleeve 7 is slightly larger than the size of the connecting end of the tower crane foundation section 9, after the steel sleeve 7 and concrete form the steel pipe column, the upper end surface of the steel pipe column is contacted with the connecting end of the tower crane foundation section 9, the contact area with the connecting end of the tower crane foundation section 9 can be ensured, compared with the traditional mode of installing the tower crane foundation section, the contact, more importantly, at the in-process of follow-up construction raft foundation 10, when raft foundation 10 was under construction to tower crane department, can once only be under construction and accomplish for raft foundation 10 in the tower crane installing zone need not to reserve the region like the conventionality, and carry out the secondary binding off, solved the interior reinforcement ligature of tower crane reservation region and be not conform to construction quality problems such as standard, waterproof processing is inconvenient and secondary mends the hole, when in-service use, can increase the size of the pre-buried rag bolt of former design, guarantee its atress.
In a specific embodiment, the steel sleeve 7 is internally provided with a plurality of layers of criss-cross distribution ribs 8, and the distribution ribs 8 are distributed on the peripheral sides of the embedded foundation bolts 5 to limit the embedded foundation bolts, so that the embedded foundation bolts 5 are prevented from being dislocated during concrete pouring.
Like this, when the tower crane installation, it is very high to pre-buried rag bolt 5's required precision, through set up distribution muscle 8 in steel casing 7, can ensure that pre-buried rag bolt 5 does not take place to shift when concreting to guarantee pre-buried rag bolt 5's installation accuracy.
In a specific embodiment, brick bed moulds 4 are built on the side walls of the periphery of the tower crane foundation pit, and the brick bed moulds 4 are built to the elevation of the bottom of the raft foundation 10; tower crane foundation bed course 2 that 100mm is thick has been pour to tower crane foundation ditch bottom, and its top and 4 inboards of brick fetal membrane all are provided with the waterproof additional layer 3 that the material is flexible waterproofing membrane.
Therefore, the brick masonry serves as an outer side template, compared with a conventional wood template, the brick masonry has high strength, is not easy to escape from a mold and expand the mold, does not need to be disassembled after construction, enhances the strength of the tower crane foundation 1 and plays a certain role in protecting the tower crane foundation 1; tower crane foundation bed course 2 has certain guard action to the tower crane foundation, then sets up waterproof additional layer 3 through on tower crane foundation bed course 2 with 4 inboards of brick fetal membrane, can play waterproof effect to the tower crane foundation, prevents that groundwater from getting into tower crane foundation 1 in, the reinforcing bar corrodes, influences the intensity on tower crane foundation.
In the specific embodiment, waterproof additional layer 3 top is provided with the pea gravel concrete protective layer, tower crane foundation bottom is located the top of pea gravel concrete protective layer.
In this way, by providing the fine aggregate concrete protective layer, it is possible to prevent sharp objects from piercing the waterproof additional layer 3 and thus destroying its waterproof performance, and the thickness of the fine aggregate concrete protective layer is generally set to 50mm to 70 mm.
In a specific embodiment, a plurality of horizontally arranged water stop rings 6 are welded on the outer wall of the steel sleeve 7, and the plurality of water stop rings 6 are sleeved on the steel sleeve 7 and distributed at equal intervals along the axial direction of the steel sleeve 7.
Like this, through setting up seal ring 6, the route of extension water infiltration, greatly increased the infiltration resistance, waterproof performance between when ensureing follow-up raft foundation 10 construction and steel casing 7, simultaneously through the setting of seal ring 6, when the concrete of follow-up raft foundation 10 is pour, seal ring 6 and steel casing 7 have constituted the function of horse tooth raft, the associativity of steel casing 7 with raft foundation 10 has been strengthened, raft foundation 10 has played the stiffening action to steel casing 7's stability, thereby tower crane work is safer.
In the specific embodiment, a cross-shaped steel bracket formed by two rigid connecting rods with crossed and welded middle positions is arranged in an area enclosed by four steel sleeves 7, and the steel bracket is horizontally arranged to limit the steel sleeves 7; the four end points of the steel bracket are respectively welded and fixed with the corresponding steel sleeve 7.
Thus, during actual construction, the rigid connecting piece is generally made of I-shaped steel, the strength can be ensured, when the concrete of the tower crane foundation is poured, because the foundation pit of the tower crane foundation 1 is generally deep, large-volume concrete pouring is involved, the concrete can be vibrated for many times, the welding stability of the steel sleeve and the reinforcing steel bar of the tower crane foundation is not high enough, the steel sleeve 7 is likely to be displaced by the vibration of the concrete, the positions of the four steel sleeves 7 are limited and fixed by arranging the steel bracket, the embedded foundation bolts 5 in the steel sleeves 7 cannot be moved correspondingly, the installation precision of a subsequent tower crane is ensured, more importantly, before the subsequent raft foundation 10 is not constructed, when the tower crane is installed on the tower crane foundation to work, the shearing force (wind force and hoisting moment force) is large, and in order to ensure the anti-overturning capability of the tower crane, the steel bracket has a transverse supporting and limiting effect on the steel sleeve 7, and the anti-overturning capacity of the tower crane is improved.
In the specific implementation process, the connection point of the steel bracket and the steel sleeve 7 is positioned in the middle of the steel sleeve 7.
Like this, when subsequent raft foundation 10 is under construction, raft foundation 10 has upper and lower layer reinforcing bar, is located steel casing 7's middle part position with the tie point of steel support and steel casing 7, and the steel support staggers with raft foundation 10's upper and lower layer reinforcing bar like this, can not influence raft foundation 10 arrangement of reinforcing bar, and the steel support contacts with steel casing 7's middle part position simultaneously, and steel casing 7's upper and lower both ends atress is more steady like this, is difficult to empty.
Before raft foundation construction and after tower crane installation are completed, because the engineering is still in a material preparation stage, the tower body is in a short state, the borne wind load is small, and only the bending moment force of normal operation of the tower crane needs to be borne, the load and the bending moment force borne by the stage can be completely met through the combination of the tower crane foundation and the steel pipe column, so that the safe and normal operation of the tower crane is ensured, and the size of the originally designed embedded foundation bolt can be increased to ensure the stress of the embedded foundation bolt during actual use; after raft foundation construction accomplished, raft foundation combines into an organic whole with the steel-pipe column, raft foundation has the constraint effect to the steel-pipe column, similar with integrated into one piece's in the current construction tower crane foundation, can fill its safe handling, even, be located the form of steel-pipe column through pre-buried rag bolt, the steel-pipe column can improve pre-buried rag bolt's antidumping ability, pre-buried rag bolt is more firm on than current traditional tower crane foundation, can bear bigger load, the security performance is higher.
Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, while the invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a tower crane foundation structure suitable for basement raft foundation, includes tower crane foundation ditch and tower crane foundation, the tower crane foundation is located the tower crane foundation ditch and is the reinforced concrete structure that double-deck reinforcing bar arranged, and its top surface is high its characterized in that with the end elevation of raft foundation: four steel sleeves are vertically arranged on the tower crane foundation, the lower ends of the steel sleeves are anchored into the tower crane foundation and welded with upper-layer steel bars of the tower crane foundation, the upper ends of the steel sleeves are as high as the top elevation of the raft foundation, concrete is filled in the steel sleeves, so that steel pipe columns are formed by the steel sleeves and the concrete and are formed by one-step pouring with the tower crane foundation, the outer diameter of each steel sleeve is larger than the size of a connecting end of a tower crane foundation section, and the distribution of the four steel sleeves on the horizontal plane of the tower crane foundation corresponds to the positions of the four connecting ends when the tower crane foundation section; a plurality of pre-buried foundation bolts for installing the tower crane vertically penetrate through each steel sleeve, the lower ends of the pre-buried foundation bolts vertically penetrate through the steel sleeves downwards and then are anchored into the middle lower portion of a tower crane foundation, and the upper ends of the pre-buried foundation bolts extend out of the top surface of each steel sleeve to be connected and installed with connecting ends corresponding to tower crane foundation sections.
2. The tower crane foundation structure suitable for basement raft foundation of claim 1, characterized in that: the steel casing intraductal is furnished with the crisscross distribution muscle of multilayer, the distribution muscle distributes and is spacing to it in pre-buried rag bolt week to prevent that pre-buried rag bolt from losing position when concrete placement.
3. The tower crane foundation structure suitable for basement raft foundation of claim 1, characterized in that: building a brick bed mould on the peripheral side wall of the tower crane foundation pit, and building the brick bed mould to the height of the raft foundation base; tower crane foundation bed course has been pour to tower crane foundation ditch bottom, and its top and brick fetal membrane inboard all are provided with the waterproof additional layer that the material is flexible waterproofing membrane.
4. The tower crane foundation structure suitable for basement raft foundation of claim 3, characterized in that: waterproof additional layer top is provided with the pea gravel concrete protective layer, tower crane foundation bottom is located the top of pea gravel concrete protective layer.
5. The tower crane foundation structure suitable for basement raft foundation of claim 2, characterized in that: a plurality of water stop rings which are horizontally arranged are welded on the outer wall of the steel sleeve, and the plurality of water stop rings are sleeved on the steel sleeve and distributed at equal intervals along the axial direction of the steel sleeve.
6. The tower crane foundation structure suitable for basement raft foundation of claim 5, characterized in that: a cross-shaped steel bracket consisting of two rigid connecting rods which are crossed and welded at the middle positions is arranged in an area enclosed by the four steel sleeves, and the steel bracket is horizontally arranged to limit the steel sleeves; and four end points of the steel bracket are respectively welded and fixed with the corresponding steel sleeve.
7. The tower crane foundation structure suitable for basement raft foundation of claim 6, characterized in that: and the connecting point of the steel bracket and the steel sleeve is positioned in the middle of the steel sleeve.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412205A (en) * | 2021-11-30 | 2022-04-29 | 成都建工集团有限公司 | Method and structure for embedding bolt steel sleeve |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114412205A (en) * | 2021-11-30 | 2022-04-29 | 成都建工集团有限公司 | Method and structure for embedding bolt steel sleeve |
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