CN111236256A - Diagonal-pulling overhanging type column-free deep foundation pit inner support system and installation method - Google Patents
Diagonal-pulling overhanging type column-free deep foundation pit inner support system and installation method Download PDFInfo
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- CN111236256A CN111236256A CN202010157911.0A CN202010157911A CN111236256A CN 111236256 A CN111236256 A CN 111236256A CN 202010157911 A CN202010157911 A CN 202010157911A CN 111236256 A CN111236256 A CN 111236256A
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- 238000000034 method Methods 0.000 title claims description 14
- 238000009434 installation Methods 0.000 title description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 145
- 239000010959 steel Substances 0.000 claims abstract description 145
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims abstract description 26
- 230000000712 assembly Effects 0.000 claims abstract description 17
- 238000000429 assembly Methods 0.000 claims abstract description 17
- 239000011148 porous material Substances 0.000 claims description 23
- 239000004567 concrete Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
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Abstract
The invention provides an inner support system of a cable-stayed cantilever type column-free deep foundation pit, which comprises: the system comprises a plurality of fender piles, a plurality of uplift piles, a plurality of cantilever beams, a crown beam, a ring support, a plurality of diagonal steel strand assemblies and a plurality of tower columns; the uplift pile is arranged on the outer side of the fender post; the top beam is fixedly connected with the top of the fender post; the cantilever beams are fixedly connected with the top of the fender post, the top of the uplift pile and the crown beam, and one end of each cantilever beam extends towards the inner side of the fender post; the circular ring support is fixedly connected with one end of the inner side of the cantilever beam; reinforcing steel bars at the bottoms of the plurality of tower columns are used for fixing the top of the set fender post; and part of the diagonal steel strand assemblies are adjustably connected with the tower column and the cantilever beam, and the rest of the diagonal steel strand assemblies are adjustably connected with the tower column and the circular ring support. The foundation pit foundation pile.
Description
Technical Field
The invention discloses a cable-stayed cantilever type column-free deep foundation pit inner support system, and belongs to the technical field of underground engineering foundation pit support.
Background
With the comprehensive development of urban underground space resources, more and more comprehensive pipe galleries and tunnel traffic pass through urban deep underground spaces, so that when the underground spaces are developed, a foundation pit supporting system needs to reduce the influence on the deep underground spaces or avoid the influence range of the existing deep buildings as far as possible, and meanwhile, a temporary structure in foundation pit supporting engineering is prevented from becoming a new obstacle for the development of the urban underground spaces. Particularly, the pile end of a supporting upright column and an upright column pile inside a foundation pit is often positioned at a deep position below the pit bottom and is very easy to become an underground deep space barrier.
Disclosure of Invention
The invention aims to solve the problem of providing a cable-stayed cantilever type upright-column-free deep foundation pit inner support system, which can completely avoid disturbance to a soil body at the bottom in a foundation pit without arranging upright columns and upright column piles, and overcomes the defects of the prior art.
The invention provides an inner support system of a cable-stayed cantilever type column-free deep foundation pit, which comprises: the pile comprises a plurality of fender piles 1, a plurality of uplift piles 2, a plurality of cantilever beams 3, a crown beam 4, a ring support 5, a plurality of diagonal steel strand assemblies and a plurality of tower columns 7; the uplift pile 2 is arranged on the outer side of the fender post 1; the top beam 4 is fixedly connected with the top of the fender post 1; the cantilever beams 3 are fixedly connected with the top of the fender post 1, the top of the uplift pile 2 and the crown beam 4, and one end of each cantilever beam 3 extends towards the inner side of the fender post 1; the circular ring support 5 is fixedly connected with one end of the inner side of the cantilever beam 3; the steel bars at the bottoms of the plurality of tower columns 7 are used for fixing the top of the set fender post 1; and part of the diagonal steel strand assemblies are adjustably connected with the tower column 7 and the cantilever beam 3, and the rest of the diagonal steel strand assemblies are adjustably connected with the tower column 7 and the circular ring support 5.
Further, the invention provides an inner support system of a cable-stayed cantilever type column-free deep foundation pit, which can also have the following characteristics: draw steel strand wires subassembly to one side includes: the steel strand collection device comprises an inclined pull steel strand 6, a steel strand collection regulator 9, a locking port anchor backing plate 10 and a locking clamp 12; the fore shaft anchor backing plate 10 is fixed at the bottom of the cantilever beam 3 and the circular ring support 5, and the fore shaft anchor backing plate 10 is provided with a plurality of holes; the inclined pull steel strand 6 penetrates through one hole of the fore shaft anchor backing plate 10, a pore channel of the cantilever beam 3 or a pore channel of the circular ring support 5, a pore channel of the tower column 7 and the other hole of the fore shaft anchor backing plate 10; the locking clamp 12 fixes two ends of the inclined pull steel strand 6 at the lower part of the locking port anchor backing plate 10; the steel strand collecting adjuster 9 is arranged on the diagonal steel strands 6 to adjust the prestress of the diagonal steel strands 6.
Further, the invention provides an inner support system of a cable-stayed cantilever type column-free deep foundation pit, which can also have the following characteristics: the tower column 7 is provided with a steel pipe plate 11; the steel pipe plate 11 is poured into the tower column 7, or the steel pipe plate 11 is fixed to the side surface of the tower column 7 by fixing rivets 13.
Further, the invention provides an inner support system of a cable-stayed cantilever type column-free deep foundation pit, which can also have the following characteristics: the depth of the guard post 1 with the tower column 7 arranged at the top is deeper than the depth of the guard posts 1 of the rest tower columns 7; the depth of the uplift pile 2 connected with the same suspension beam 3 with the set fender post 1 is deeper than that of the rest uplift piles 2.
Further, the invention provides an inner support system of a cable-stayed cantilever type column-free deep foundation pit, which can also have the following characteristics: the crown beam 4 is square; the cantilever beam 3 is a variable cross-section cantilever beam.
Further, the invention provides an inner support system of a cable-stayed cantilever type column-free deep foundation pit, which can also have the following characteristics: the crown beam 4 also comprises a plurality of corner supports 8;
two ends of the steel bar of the corner brace 8 are fixedly connected with the steel bars on two sides of the crown beam 4; the angle support 8 is also fixedly connected with the steel bars of the staggered cantilever beams 3.
In addition, the invention also provides an installation method of the cable-stayed cantilever type upright-column-free deep foundation pit inner support system, which comprises the following steps: the method comprises the following steps:
step A, arranging a plurality of fender posts 1 around a foundation pit, wherein the position of each fender post 1 is matched with the shape of a crown beam 4; the uplift pile 2 is arranged outside the fender pile 1.
The step B comprises the following steps:
and step B-1, fixedly connecting the steel bars of the crown beam 4 with the steel bars reserved at the top of the fender post 1.
B-2, fixedly connecting the reinforcing steel bars of the cantilever beams 3 with the reinforcing steel bars reserved at the top of the fender post 1, the reinforcing steel bars reserved at the top of the uplift pile 2 and the reinforcing steel bars of the crown beams 4, wherein one ends of the reinforcing steel bars of the cantilever beams 3 extend towards the inner side of the fender post 1;
and step B-3, fixedly connecting the reinforcing steel bars of the circular ring support 5 with one end of the inner side of the reinforcing steel bars of the cantilever beam 3.
And step C, fixing the steel bars at the bottoms of the plurality of tower columns 7 to the preset steel bars reserved at the top of the fender post 1.
Wherein the step B and the step C are not separated in sequence.
D, pouring the steel bars reserved at the top of the fender post 1, the steel bars reserved at the top of the uplift pile 2, the steel bars of the cantilever beam 3, the steel bars of the crown beam 4, the steel bars of the circular ring support 5 and the steel bars at the bottom of the tower column 7 together;
and E, connecting the plurality of cable-stayed steel strand assemblies with the tower column 7 and the cantilever beam 3, and connecting the plurality of cable-stayed steel strand assemblies with the tower column 7 and the circular ring support 5.
Further, the invention provides an installation method of the cable-stayed cantilever type upright-column-free deep foundation pit inner support system, which can also have the following characteristics: in the step E, a locking anchor backing plate 10 of the diagonal steel strand assembly is fixed at the bottom of the cantilever beam 3 or the circular ring support 5, and the locking anchor backing plate 10 is provided with a plurality of holes; the inclined pull steel strand 6 of the inclined pull steel strand assembly penetrates through one hole of the locking port anchor backing plate 10, the pore channel of the cantilever beam 3 or the pore channel of the circular ring support 5, the pore channel of the tower column 7 and the other hole of the locking port anchor backing plate 10; the locking clamp 12 fixes two ends of the inclined pull steel strand 6 at the lower part of the locking port anchor backing plate 10; the steel strand collecting adjuster 9 is arranged on the diagonal steel strands 6 to adjust the prestress of the diagonal steel strands 6.
Further, the invention provides an installation method of the cable-stayed cantilever type upright-column-free deep foundation pit inner support system, which can also have the following characteristics: the tower column 7 is provided with a steel pipe plate 11; the steel pipe plate 11 is poured into the tower column 7, or the steel pipe plate 11 is fixed to the side surface of the tower column 7 by fixing rivets 13.
Further, the invention provides an installation method of the cable-stayed cantilever type upright-column-free deep foundation pit inner support system, which can also have the following characteristics: and a pore channel is reserved when the cantilever beam 3 and the circular ring support 5 are poured.
The invention provides a cable-stayed overhanging type upright-column-free deep foundation pit inner support system, which comprises fender posts around a foundation pit, a concrete crown beam at the top of each fender post and uplift piles outside the fender posts, wherein the fender posts are arranged on the top of the fender posts; the uplift pile and the fender pile are connected by a variable cross-section cantilever beam, and the inner circular ring support of the foundation pit is integrally cast with the crown beam through the variable cross-section cantilever beam and stressed together; the inclined pull steel strand is connected with the circular ring support through a circular ring support embedded anchor backing plate, and the self weight of the circular ring support is transferred to the concrete tower column; the self weight of the circular ring support transmitted to the tower column is transmitted to the uplift pile by the steel strand or the section steel; the soil pressure around the foundation pit is transmitted to the circular ring support through the crown beam and the variable cross-section cantilever beam, and the self weight of the circular ring support is transmitted to the tower column and the uplift pile through the inclined pull steel strand and the variable cross-section cantilever beam; the upright posts and upright post piles in the foundation pit are completely cancelled, so that the existing building or planning structure at the bottom of the foundation pit can be effectively avoided, and the technical problem under the relevant condition of foundation pit engineering is solved.
Drawings
Fig. 1 is a plan layout view of an inclined-pulling overhanging type non-upright column deep foundation pit inner support system.
Fig. 2 is a cross-sectional view of an inner support system of a cable-stayed cantilever type non-upright column deep foundation pit.
Fig. 3 is a schematic view of a connection structure of the cable-stayed steel strand assembly, a cantilever beam and a circular ring support.
Fig. 4 is a schematic view of a connection structure of the cable-stayed steel strand assembly and the tower column.
Fig. 5 is a schematic view of another connection structure of the cable-stayed steel strand assembly and the tower column.
Detailed Description
The invention is further described below with reference to the following figures and specific examples.
Fig. 1 is a plan layout view of an inclined-pulling overhanging type non-upright column deep foundation pit inner support system.
Fig. 2 is a cross-sectional view of an inner support system of a cable-stayed cantilever type non-upright column deep foundation pit.
As shown in fig. 1 and fig. 2, draw formula of encorbelmenting to one side and do not have stand deep basal pit inner support system includes: a plurality of fender pile 1, a plurality of uplift pile 2, a plurality of cantilever beam 3, crown beam 4, ring support 5, a plurality of cable-stayed steel strand assembly, a plurality of pylon 7. In fig. 1, an underground protected building 15.
The fender post 1 is arranged at the periphery of the foundation pit, the fender post 1 forms a square in the embodiment, and the fender post is matched with the shape of the crown beam 4, and the fender post in the figure 1 is shielded by the upper crown beam and cannot be displayed. The uplift pile 2 is arranged outside the fender pile 1. The fender pile 1 and the uplift pile 2 can be constructed simultaneously, the fender pile and the uplift pile can be a filling pile or a precast pile, and anchoring steel bars are reserved at the top.
And the steel bars of the crown beam 4 are welded and fixed with the steel bars reserved at the top of the fender post 1. In this embodiment, the main body of the crown beam 4 is square, and the crown beam 4 further has four corner supports 8. The two ends of the reinforcing steel bars of the four corner supports 8 are fixedly connected with the reinforcing steel bars on the two sides of the crown beam 4 to form a whole. The guard post 1 can be arranged below the four corner supports 8, or not arranged, and is set according to the stress requirement.
The cantilever beam 3 in this embodiment is a variable cross-section cantilever beam. The steel bars of the cantilever beams 3 are fixedly connected with the top of the fender post 1, the top of the uplift pile 2 and the crown beam 4; of course also including the corner supports 8. One end of the cantilever beam 3 extends towards the inner side of the fender post 1.
And the reinforcing steel bar of the circular ring support 5 is fixedly connected with one end of the reinforcing steel bar at the inner side of the cantilever beam 3.
In this embodiment, the number of the tower columns 7 is four, and the four tower columns are respectively arranged above the fender post 1 located at the center of the four sides of the crown beam 4. The depth of the four guard posts 1 provided with tower columns 7 is greater than the depth of the other guard posts 1. The depth of the four uplift piles 2 connected with the same cantilever beam 3 with the set fender post 1 is deeper than that of the rest uplift piles 2. And 7, welding the steel bars of the tower column with the steel bars of the enclosure pile 1, and inserting the steel bars into the steel bar cage of the enclosure pile 1.
And the steel bars reserved at the top of the fender post 1, the steel bars reserved at the top of the uplift pile 2, the steel bars of the cantilever beam 3, the steel bars of the crown beam 4, the steel bars of the circular ring support 5 and the steel bars at the bottom of the tower column 7 are poured together to form a whole.
During pouring, a locking anchor backing plate 10 of the steel strand is pre-embedded at a hanging point of the cantilever beam 3 and the circular ring support 5, and a pore passage is reserved. Of course, the fore shaft anchor plate 10 can be fixed at the hanging point positions of the cantilever beam 3 and the circular ring support 5 through the fixing rivets 13.
One part of the diagonal steel strand assemblies are adjustably connected with the tower column 7 and the cantilever beam 3, and the other part of the diagonal steel strand assemblies are adjustably connected with the tower column 7 and the circular ring support 5.
Fig. 3 is a schematic view of a connection structure of the cable-stayed steel strand assembly, a cantilever beam and a circular ring support.
Fig. 4 is a schematic view of a connection structure of the cable-stayed steel strand assembly and the tower column.
As shown in fig. 3 and 4, the cable-stayed cable assembly includes: the device comprises an inclined pull steel strand 6, a steel strand collecting regulator 9, a locking port anchor backing plate 10 and a locking clamp 12.
The fore shaft anchor backing plate 10 is fixed at the bottom of the cantilever beam 3 and the circular ring support 5, and the fore shaft anchor backing plate 10 is provided with a plurality of holes. The inclined pull steel strand 6 penetrates through one hole of the fore shaft anchor backing plate 10, the pore channel of the cantilever beam 3 or the pore channel of the circular ring support 5, the pore channel of the tower column 7 and penetrates out of the other hole of the fore shaft anchor backing plate 10. The locking clamp 12 fixes the two ends of the inclined pull steel strand 6 at the lower part of the locking hole anchor backing plate 10. The steel strand collecting adjuster 9 is arranged on the inclined pulling steel strand 6, collects steel strands at the same hoisting point and adjusts the prestress.
As shown in fig. 4, the tower column 7 has a steel pipe plate 11; the steel pipe plate 11 is embedded in the reinforced concrete of the tower column 7. The diagonal steel strands 6 pass through the pore channels of the steel tube plate 11.
Fig. 5 is a schematic view of another connection structure of the cable-stayed steel strand assembly and the tower column.
As shown in fig. 5, in another structure of the tower column 7, the steel pipe plates 11 are semicircular tunnels and are respectively anchored on both sides of the tower column 7 by fixing rivets 13. The two types of tower columns are different in stress state and can be preferably used according to the stress angle of the inclined pull steel strand.
The method for installing the cable-stayed cantilever type upright-column-free deep foundation pit inner support system comprises the following steps: the method comprises the following steps:
step A, arranging a plurality of fender posts 1 around a foundation pit, wherein the position of each fender post 1 is matched with the shape of a crown beam 4; the uplift pile 2 is arranged outside the fender pile 1.
The step B comprises the following steps:
and step B-1, fixedly connecting the steel bars of the crown beam 4 with the steel bars reserved at the top of the fender post 1.
B-2, fixedly connecting the reinforcing steel bars of the cantilever beams 3 with the reinforcing steel bars reserved at the top of the fender post 1, the reinforcing steel bars reserved at the top of the uplift pile 2 and the reinforcing steel bars of the crown beams 4, wherein one ends of the reinforcing steel bars of the cantilever beams 3 extend towards the inner side of the fender post 1;
and step B-3, fixedly connecting the reinforcing steel bars of the circular ring support 5 with one end of the inner side of the reinforcing steel bars of the cantilever beam 3.
And step C, fixing the steel bars at the bottoms of the plurality of tower columns 7 to the preset steel bars reserved at the top of the fender post 1.
Wherein the step B and the step C are not separated in sequence.
D, pouring the steel bars reserved at the top of the fender post 1, the steel bars reserved at the top of the uplift pile 2, the steel bars of the cantilever beam 3, the steel bars of the crown beam 4, the steel bars of the circular ring support 5 and the steel bars at the bottom of the tower column 7 together; and a pore channel is reserved when the cantilever beam 3 and the circular ring support 5 are poured.
And E, connecting the plurality of cable-stayed steel strand assemblies with the tower column 7 and the cantilever beam 3, and connecting the plurality of cable-stayed steel strand assemblies with the tower column 7 and the circular ring support 5.
A fore shaft anchor backing plate 10 of the diagonal steel strand assembly is fixed at the bottom of the cantilever beam 3 or the circular ring support 5, and the fore shaft anchor backing plate 10 is provided with a plurality of holes;
the inclined pull steel strand 6 of the inclined pull steel strand assembly penetrates through one hole of the locking port anchor backing plate 10, the pore channel of the cantilever beam 3 or the pore channel of the circular ring support 5, the pore channel of the tower column 7 and the other hole of the locking port anchor backing plate 10;
the locking clamp 12 fixes two ends of the inclined pull steel strand 6 at the lower part of the locking port anchor backing plate 10;
the steel strand collecting adjuster 9 is arranged on the diagonal steel strands 6 to adjust the prestress of the diagonal steel strands 6.
While the present invention has been described in detail with reference to the preferred embodiments, it should be understood that the above description should not be taken as limiting the invention.
Claims (10)
1. The utility model provides a draw formula of encorbelmenting to one side does not have stand deep basal pit inner support system which characterized in that: the pile comprises a plurality of fender piles (1), a plurality of uplift piles (2), a plurality of cantilever beams (3), a crown beam (4), a ring support (5), a plurality of diagonal steel strand assemblies and a plurality of tower columns (7);
wherein the uplift pile (2) is arranged outside the fender post (1);
the crown beam (4) is fixedly connected with the top of the fender post (1);
the cantilever beams (3) are fixedly connected with the tops of the fender posts (1), the tops of the uplift posts (2) and the crown beams (4), and one end of each cantilever beam (3) extends towards the inner side of the fender post (1);
the circular ring support (5) is fixedly connected with one end of the inner side of the cantilever beam (3);
the steel bars at the bottoms of the plurality of tower columns (7) are used for fixing the top of the set fender post (1);
and part of the cable-stayed steel strand assemblies are adjustably connected with the tower column (7) and the cantilever beam (3), and the rest of the cable-stayed steel strand assemblies are adjustably connected with the tower column (7) and the circular ring support (5).
2. The cable-stayed cantilever type upright-column-free deep foundation pit inner support system of claim 1, which is characterized in that:
wherein, draw steel strand wires subassembly to one side includes: the steel strand collection device comprises an inclined pull steel strand (6), a steel strand collection regulator (9), a locking anchor backing plate (10) and a locking clamp (12);
the fore shaft anchor backing plate (10) is fixed at the bottoms of the cantilever beam (3) and the circular ring support (5), and the fore shaft anchor backing plate (10) is provided with a plurality of holes;
the inclined pull steel strand (6) penetrates through one hole of the fore shaft anchor backing plate (10), the pore channel of the cantilever beam (3) or the pore channel of the circular ring support (5), the pore channel of the tower column (7) and the other hole of the fore shaft anchor backing plate (10);
the locking clamp (12) fixes the two ends of the inclined pull steel strand (6) at the lower part of the locking port anchor backing plate (10);
and the steel strand collecting regulator (9) is arranged on the inclined pulling steel strand (6) to regulate the prestress of the inclined pulling steel strand (6).
3. The cable-stayed cantilever type upright-column-free deep foundation pit inner support system as claimed in claim 2, wherein:
wherein the tower column (7) is provided with a steel pipe plate (11);
the steel pipe plate (11) is poured into the tower column (7), or the steel pipe plate (11) is fixed to the side face of the tower column (7) through a fixing rivet (13).
4. The cable-stayed cantilever type upright-column-free deep foundation pit inner support system of claim 1, which is characterized in that:
wherein the depth of the guard post (1) with the tower column (7) arranged at the top is deeper than the depth of the rest of the guard posts (1);
the depth of the uplift pile (2) connected with the same set fender post (1) and the same set cantilever beam (3) is deeper than that of the rest uplift piles (2).
5. The cable-stayed cantilever type upright-column-free deep foundation pit inner support system of claim 1, which is characterized in that:
wherein the crown beam (4) is square; the cantilever beam (3) is a variable cross-section cantilever beam.
6. The cable-stayed cantilever type upright-column-free deep foundation pit inner support system of claim 1, which is characterized in that:
wherein the crown beam (4) further comprises a plurality of corner supports (8);
two ends of the steel bar of the corner brace (8) are fixedly connected with the steel bars on two sides of the crown beam (4); the angle brace (8) is also fixedly connected with the steel bars of the staggered cantilever beams (3).
7. A method for installing an inner support system of a cable-stayed cantilever type column-free deep foundation pit is characterized in that: the method comprises the following steps:
step A, arranging a plurality of fender posts (1) on the periphery of a foundation pit, wherein the positions of the fender posts (1) are matched with the shape of a crown beam (4); the uplift pile (2) is arranged on the outer side of the fender post (1);
the step B comprises the following steps:
b-1, fixedly connecting the steel bars of the crown beam (4) with the steel bars reserved at the top of the fender post (1);
b-2, fixedly connecting reinforcing steel bars of a plurality of cantilever beams (3) with reinforcing steel bars reserved at the top of the enclosure pile (1), reinforcing steel bars reserved at the top of the uplift pile (2) and reinforcing steel bars of the crown beam (4), wherein one ends of the reinforcing steel bars of the cantilever beams (3) extend towards the inner side of the enclosure pile (1);
b-3, fixedly connecting the reinforcing steel bars of the circular ring support (5) with one end of the inner side of the reinforcing steel bars of the cantilever beam (3);
c, fixing the set steel bars reserved at the top of the fender post (1) by the steel bars at the bottoms of the plurality of tower columns (7);
wherein the step B and the step C are not separated in sequence;
d, pouring the steel bars reserved at the top of the fender post (1), the steel bars reserved at the top of the uplift pile (2), the steel bars of the cantilever beam (3), the steel bars of the crown beam (4), the steel bars of the circular ring support (5) and the steel bars at the bottom of the tower column (7) together;
and E, connecting the plurality of cable-stayed steel strand assemblies with the tower column (7) and the cantilever beam (3), and connecting the plurality of cable-stayed steel strand assemblies with the tower column (7) and the circular ring support (5).
8. The method for installing the cable-stayed cantilever type upright-free deep foundation pit inner support system according to claim 7, characterized in that:
in the step E, the fore shaft anchor backing plate (10) of the diagonal steel strand assembly is fixed at the bottom of the cantilever beam (3) or the circular ring support (5), and the fore shaft anchor backing plate (10) is provided with a plurality of holes;
the inclined pull steel strand (6) of the inclined pull steel strand assembly penetrates through one hole of the fore shaft anchor backing plate (10), the pore channel of the cantilever beam (3) or the pore channel of the circular ring support (5), the pore channel of the tower column (7) and penetrates out of the other hole of the fore shaft anchor backing plate (10);
the locking clamp (12) fixes the two ends of the inclined pull steel strand (6) at the lower part of the locking port anchor backing plate (10);
and the steel strand collecting regulator (9) is arranged on the inclined pulling steel strand (6) to regulate the prestress of the inclined pulling steel strand (6).
9. The method for installing the cable-stayed cantilever type upright-free deep foundation pit inner support system according to claim 8, characterized in that:
the tower column (7) is provided with a steel pipe plate (11);
the steel pipe plate (11) is poured into the tower column (7), or the steel pipe plate (11) is fixed to the side face of the tower column (7) through a fixing rivet (13).
10. The method for installing the cable-stayed cantilever type upright-free deep foundation pit inner support system according to claim 7, characterized in that:
and a pore channel is reserved when the cantilever beam (3) and the circular ring support (5) are poured.
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| CN202010157911.0A CN111236256B (en) | 2020-03-09 | 2020-03-09 | Cable-stayed overhanging type upright post-free deep foundation pit inner supporting system and installation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114032921A (en) * | 2021-12-11 | 2022-02-11 | 中亿建业集团有限公司 | Deep foundation pit and construction method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013123383A1 (en) * | 2012-02-16 | 2013-08-22 | Belinsky Sidney | Stationary positioned offshore windpower plant (owp) and the methods and means for its assembling,transportation, installation and servicing |
| CN103266574A (en) * | 2013-05-02 | 2013-08-28 | 浙江大学 | Simply-supported box girder bridge strengthening method with oblique cables |
| CN203514326U (en) * | 2013-11-01 | 2014-04-02 | 浙江万华建设有限公司 | Connection structure of fish-bellied steel truss of foundation pit |
| CN110258802A (en) * | 2019-05-31 | 2019-09-20 | 东南大学 | A kind of Ultra-Long Spans spoke type suspended-dome structure based on flying swallow truss arch |
| CN110512866A (en) * | 2019-08-14 | 2019-11-29 | 中交二航局第四工程有限公司 | A kind of constructing structure being used to support beam and construction method |
| CN211849482U (en) * | 2020-03-09 | 2020-11-03 | 中船勘察设计研究院有限公司 | Cable-stayed overhanging type column-free deep foundation pit inner supporting system |
-
2020
- 2020-03-09 CN CN202010157911.0A patent/CN111236256B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013123383A1 (en) * | 2012-02-16 | 2013-08-22 | Belinsky Sidney | Stationary positioned offshore windpower plant (owp) and the methods and means for its assembling,transportation, installation and servicing |
| CN103266574A (en) * | 2013-05-02 | 2013-08-28 | 浙江大学 | Simply-supported box girder bridge strengthening method with oblique cables |
| CN203514326U (en) * | 2013-11-01 | 2014-04-02 | 浙江万华建设有限公司 | Connection structure of fish-bellied steel truss of foundation pit |
| CN110258802A (en) * | 2019-05-31 | 2019-09-20 | 东南大学 | A kind of Ultra-Long Spans spoke type suspended-dome structure based on flying swallow truss arch |
| CN110512866A (en) * | 2019-08-14 | 2019-11-29 | 中交二航局第四工程有限公司 | A kind of constructing structure being used to support beam and construction method |
| CN211849482U (en) * | 2020-03-09 | 2020-11-03 | 中船勘察设计研究院有限公司 | Cable-stayed overhanging type column-free deep foundation pit inner supporting system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114032921A (en) * | 2021-12-11 | 2022-02-11 | 中亿建业集团有限公司 | Deep foundation pit and construction method thereof |
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| CN111236256B (en) | 2024-03-19 |
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