CN109537599A - The construction method of deep foundation pit support system support changing structure for use - Google Patents
The construction method of deep foundation pit support system support changing structure for use Download PDFInfo
- Publication number
- CN109537599A CN109537599A CN201811172409.6A CN201811172409A CN109537599A CN 109537599 A CN109537599 A CN 109537599A CN 201811172409 A CN201811172409 A CN 201811172409A CN 109537599 A CN109537599 A CN 109537599A
- Authority
- CN
- China
- Prior art keywords
- plate
- support
- post
- waist rail
- cast strip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Foundations (AREA)
Abstract
The present invention relates to a kind of deep foundation pit support system support changing structure for use and construction methods, it is characterised in that annular connecting plate is arranged on the outside of supporting pile cages, in the position of annular connecting plate setting anchor ear connector, pressure dispersion plate and waist rail locating slot；Prestressing force is applied to waist rail and bracing members respectively by the first jack unit and the second jack unit；Hanging groove is shelved in setting support on waist rail；2~4 placing of reinforcement connectors are set on the outside of the linkage section of lattice column, top connecting hoop plate, lower part connecting hoop plate and connection inner support are set in bracing members position；Pressure positioning is carried out to post-cast strip end mould by the positioned internal body inside post-cast strip steel bar cage, and closed guard is set at post-cast strip position；Water-proof sheet material is set towards support pile side in outer wall of basement.The present invention can not only promote the positioning accuracy and installation efficiency of waist rail, and the globality and intensity of support-replacing system can be improved, and can also reduce the difficulty of post-cast strip closure construction.
Description
Technical field
The present invention relates to the construction method of deep basal pit support changing structure for use, in particular to a kind of construction efficiency is high, globality is strong, ring
Border influences small deep foundation pit support system support changing structure for use and construction method, belongs to ground and foundation engineering field, is suitable for deep base
Cheat support system support replacement engineering.
Background technique
After the completion of the hypogees structure construction such as building foundation and outer wall of basement, the inner support of support pile need to often be torn open
Except in order to Superstructure Construction.Due to bracing demolition can stress to support pile and deformation have an impact, in engineering usually
Need to carry out deep foundation pit support system support replacement construction.Common support replacement method has fashioned iron support replacement or reinforced concrete structure support replacement,
Though this method can meet the requirement of load transmitting to a certain extent, many by construction environment, construction technology, technical level etc.
Factor influences, and when practice of construction still has the problems such as difficulty of construction is big, the installation positioning of support-replacing system globality poor, waist rail is difficult, sternly
Construction efficiency is affected again, reduces the construction quality of architectural engineering deep basal pit.
Have a kind of deep-foundation pit engineering support system support replacement construction technology, it is characterised in that the supporting scheme that engineering uses for
Two bors d's oeuveres I-steel steel waist rail+steel pipe inner supporting system is using Two bors d's oeuveres I-steel as steel waist rail, separately close to foundation pit lagging pile side
Side combining main body structure installs inner support hanging plate in corresponding site；When construction steel waist rail, interior branch first should be released using total station
Support installation position line installs fixed steel after being polished flat supporting pile wall, the support of installation steel waist rail, checking and accepting all steel waist rail supports
Waist rail carries out lattice column construction after the completion of checking and accepting.Though the construction method constructs deep basal pit support-replacing system, site construction technology
It is complicated, waist rail positioning difficulty is big, support-replacing system globality poor, and be not directed to post-cast strip assembled closed question.
Fine in waist rail in conclusion though existing construction method achieves preferable construction effect in suitable operating condition
Change, structural integrity promotion, construction efficiency improvement etc. remain deficiency.In consideration of it, to improve deep foundation pit support system support replacement
The efficiency and quality of construction urgently invent a kind of positioning accuracy that can not only promote waist rail and installation efficiency at present, and
And the globality and intensity of support-replacing system can be improved, the deep foundation pit support system of post-cast strip closure construction difficulty can also be reduced
Support changing structure for use and construction method.
Summary of the invention
The purpose of the present invention is to provide a kind of positioning accuracy that can not only promote waist rail and installation efficiency, and
The globality and intensity that support-replacing system can be improved, the deep foundation pit support system that can also reduce post-cast strip closure construction difficulty change
Support structure and construction method.
To realize the above-mentioned technical purpose, the invention adopts the following technical scheme:
The construction method of deep foundation pit support system support changing structure for use, it is characterised in that including following construction procedure:
1) pattern foundation pit supporting structure pile driving construction: annular connecting plate is set on the outside of the supporting pile cages at waist rail height, and in ring
Connection bolt is preset on shape connecting plate；The linkage section of the top setting lattice column of structure pile, sets on the outside of the linkage section of lattice column
~placing of reinforcement connector is set, reinforcing bar limiting slot and structure pile cages on reinforcing bar connector is made to be connected firmly；
2) soil mass of foundation pit is excavated: foundation pit supporting pile carries out soil mass of foundation pit excavation construction after forming intensity；
3) basement bottom board is constructed: positioned internal body being arranged inside the post-cast strip steel bar cage of basement bottom board, makes inside
Position is set between positioning body and post-cast strip end mould and adjusts body, reinforcing bar is set on the mould of post-cast strip end and passes through slot and only slurry；?
Closed guard is arranged in positioned internal body free face；
4) waist rail locating slot be arranged: support pile (1) outside and annular connecting plate position corresponding position setting waist rail anchor ear,
Vertical vertical plate is arranged on waist rail locating slot, and sets on vertical vertical plate for anchor ear connector, pressure dispersion plate and waist rail locating slot
Horizontal fastening bolts are set, reinforcing steel body is set in the bottom of waist rail locating slot；
5) lattice column is constructed: the linkage section of the lattice column on top and lattice column being connected firmly, is arranged in bracing members position
Top connecting hoop plate and lower part connecting hoop plate, are arranged drag-line on the connecting hoop plate of top, and connection is arranged on the connecting hoop plate of lower part
Inner support and reinforcement diagonal brace, setting drag-line connects ring flat-plate and ring flat-plate limit body in connection inner support；
6) hoisting ring waist rail installation and prestress application: is set on the both ends of waist rail setting pressure-bearing cap plate, top；Pressure-bearing cap
Cross spacing plate is arranged in the outside of plate；Hanging groove is shelved in setting support at bracing members setting position, and will be propped up by top bolt
Support shelves hanging groove and is connected firmly with waist rail；Waist rail is lifted to waist rail locating slot, the lateral fastening spiral shell on vertical vertical plate is passed through
Bolt press fastening waist rail；After all waist rails are installed, the first jack unit is installed to the cross spacing plate of pressure-bearing cap plate
Top applies prestressing force to waist rail by the first jack unit；
7) bracing members install: one end of bracing members is placed in support and is shelved in hanging groove, the other end with connect inner support end
Cuff connection, and shelved in support and wedge-shaped obturator, the second jack unit and sliding supporter are set in hanging groove；Inside cuff
Flexible joint layer is set；Wedge-shaped obturator is shelved hanging groove with support and is bolted by hanging groove；
8) support replacement construct: from bottom to top successively remove former base cheat support construction, by the bracing members of rear setting, lattice column and
Waist rail provides internal support to foundation pit；
9) outer wall of basement and water-proof sheet material construction: outer wall of basement construction is carried out, in the post-cast strip with basement bottom board
The post-cast strip of opposite position setting outer wall of basement；Positioned internal is set inside the post-cast strip steel bar cage of outer wall of basement
Body makes that adjusting body in position is arranged between positioned internal body and post-cast strip end mould；In internal positioning body free face, closed guard is set；
Waterproof connector is set towards support pile side in outer wall of basement, connects water-proof sheet material by plate bolt with waterproof connector
It connects；
10) backfill construction and bracing members are removed: bottom-up to be sequentially filled outer wall of basement and supporting using backfill
The gap of stake, the synchronous bracing members and waist rail for removing the position in backfill filling construction；
11) post empiricism: removing closed guard, releases position and adjusts constraint of the body to post-cast strip end mould, pours after taking-up
Band edge mould and positioned internal body, carry out post-cast strip concrete pour and maintenance construction.
Further, step 3) and step 9) the positioned internal body are made of steel or plastic plate or timber, cross-section
Face it is of a lateral H shape orShape or " mouth " shape connect bolt in the free face setting baffle of internal positioning body；The position is adjusted
Body uses pressure jack or mechanical bolt.
Step 1) the reinforcing bar connector is located at the outside of lattice column, and circumferentially uniform intervals are arranged, reinforcing bar connector
One end and lattice column are welded to connect, and reinforcing bar limiting slot is arranged in the other end；The diameter of the reinforcing bar limiting slot is compared with structure pile cages
The big 5~10mm of longitudinal reinforcement.
Step 6) the pressure-bearing cap plate cross section is inShape is placed on the both ends of waist rail；It is cross-section that hanging groove is shelved in the support
Face rectangular and trapezoidal shapes.
Step 7) the wedge-shaped obturator cross section is in a rectangular trapezoid, is welded using steel plate.
Step 6) and the step 7) support shelve hanging groove cross section in Z-shaped, are formed using steel plate rolling, bottom plate
It moves towards parallel with bracing members.
Step 9) the post-cast strip end mould is arranged on the mould of post-cast strip end using steel form or aluminum alloy mould plate or plank sheathing
Reinforcing bar passes through slot, adjusts body connecting plate and only slurry.
The present invention has the characteristics that following and beneficial effect
(1) present invention is arranged annular connecting plate inside support pile, and waist rail anchor ear is arranged in outside, can effectively be promoted waist rail with
The bonding strength of support pile improves the precision of structural system positioning.
(2) the reinforcing bar connector connecting with structure pile cages is arranged in the present invention inside structure pile, and connects reinforcing bar
The connection of the linkage section of body and lattice column, can effectively promote the bonding strength of lattice column and structural column.
(3) top connecting hoop plate and lower part connecting hoop plate is arranged in the present invention on lattice column, passes through drag-line and reinforcement respectively
Diagonal brace applies pulling force and pressure on top surface to connection inner support, promotes the installation positioning accuracy and bearing capacity of connection inner support.
(4) present invention is provided with jack unit in waist rail junction, can apply pre- pressure on top surface to waist rail, improve waist rail by
Power performance.
(5) present invention is provided with support in bracing members and waist rail joint and shelves hanging groove and cuff, can reduce bracing members and hang
The difficulty for setting position improves the globality of structure.
(6) present invention is provided with closed guard and post-cast strip end mould at building post-cast strip position, and can pass through positioned internal
Body positions post-cast strip end mould, can not only improve the construction quality at post-cast strip position, and can prevent sundries from entering
Post-cast strip.
Detailed description of the invention
Fig. 1 is deep foundation pit support system support replacement constructing structure schematic diagram of the present invention；
Fig. 2 is Fig. 1 waist rail layout stracture schematic diagram；
Fig. 3 is Fig. 2 waist rail transverse connection structure schematic diagram；
Fig. 4 is Fig. 1 lattice column layout stracture schematic diagram；
Fig. 5 is Fig. 4 lattice column and structure pile attachment structure schematic diagram
Fig. 6 post empiricism structural schematic diagram of the present invention；
Fig. 7 is the post-cast strip Fig. 6 end mode structure schematic diagram；
Fig. 8 is structure section schematic diagram after the completion of Construction of Deep Excavation Engineering of the present invention；
Fig. 9 is the construction process figure of a kind of deep foundation pit support system support changing structure for use of the present invention and construction method.
In figure: 1- support pile；2- waist rail；3- supporting pile cages；4- annular connecting plate；5- connection bolt；6- structure pile；
7- lattice column；8- reinforcing bar connector；9- reinforcing bar limiting slot；10- structure pile cages；11- basement bottom board；The post-cast strip 12- steel
Muscle cage；13- positioned internal body；The post-cast strip 14- end mould；The position 15- adjusts body；16- reinforcing bar passes through slot；17- stops slurry；18- envelope
Close baffle；19- waist rail anchor ear；20- anchor ear connector；21- pressure dispersion plate；22- waist rail locating slot；The vertical vertical plate of 23-；24-
Horizontal fastening bolts；25- bracing members；The top 26- connecting hoop plate；The lower part 27- connecting hoop plate；28- drag-line；29- connection inner support；
30- reinforcement diagonal brace；31- drag-line connects ring flat-plate；32- ring flat-plate limit body；33- pressure-bearing cap plate；34- hoisting ring；35- cross spacing
Plate；Hanging groove is shelved in 36- support；The first jack unit of 37-；38- cuff；39- wedge shape obturator；40- hanging groove bolt；41- second
Jack unit；42- slides supporter；43- flexible joint layer；44- outer wall of basement；45- water-proof sheet material；46- waterproof connector；
47- plate bolt；48- backfill；49- baffle connects bolt；50- adjusts body connecting plate；51- top bolt；52- reinforcing steel
Body.
Specific embodiment
The design and construction technical requirements of support pile, support shelve hanging groove production and installation Technology requirement, concrete
Mix-design and pouring construction technical requirements, the design and construction technical requirements of basement bottom board etc., in present embodiment not
It repeats again, emphasis illustrates that the present invention relates to the embodiments of structures and methods.
Fig. 1 is deep foundation pit support system support replacement constructing structure schematic diagram of the present invention, and Fig. 2 is the signal of Fig. 1 waist rail layout stracture
Figure, Fig. 3 is Fig. 2 waist rail transverse connection structure schematic diagram, and Fig. 4 is Fig. 1 lattice column layout stracture schematic diagram, and Fig. 5 is Fig. 4 lattice column
With structure pile attachment structure schematic diagram, Fig. 6 post empiricism structural schematic diagram of the present invention, Fig. 7 is that the post-cast strip Fig. 6 end mode structure shows
It is intended to, Fig. 8 is structure section schematic diagram after the completion of Construction of Deep Excavation Engineering of the present invention.
Referring to Fig.1~deep foundation pit support system support changing structure for use shown in Fig. 8, setting annular is even on the outside of supporting pile cages 3
Fishplate bar 4, position setting anchor ear connector 20, pressure dispersion plate 21 and the waist rail locating slot 22 of annular connecting plate 4；Pass through the first top
Pressure device 37 and the second jack unit 41 apply prestressing force to waist rail 2 and bracing members 25 respectively；Extension is shelved in setting support on waist rail 2
Slot 36；2~4 placing of reinforcement connectors 8 are set on the outside of the linkage section of lattice column 7, and bracing members 25 are arranged position and top connecting hoop is arranged
Plate 26, lower part connecting hoop plate 27 and connection inner support 29；By the positioned internal body 13 inside post-cast strip steel bar cage 12 to post-cast strip
It holds mould 14 to carry out pressure positioning, and closed guard 18 is set at post-cast strip position；Outer wall of basement 44 is arranged towards 1 side of support pile
Water-proof sheet material 45.
Support pile 1 uses cast-in-place concrete pile, diameter 800mm；In the inside of support pile 1, supporting pile cages 3 are set,
Its longitudinal reinforcement uses the spiral of diameter 22mm.
Waist rail 2 uses strength grade to roll for the H profile steel of Q235, model 400 × 400 × 13 × 21.
Annular connecting plate 4 uses strength grade to form for Q235, with a thickness of the steel plate rolling of 10mm, is highly 6cm.
Bolt 5 is connected using the high-strength bolt of diameter 24mm.
The linkage section of the top setting lattice column 7 of structure pile 6, is arranged 2~4 placing of reinforcements on the outside of the linkage section of lattice column 7
Connector 8, the reinforcing bar limiting slot 9 on reinforcing bar connector 8 are connected firmly with structure pile cages 10；Structure pile 6 and lattice column 7 are
Reinforced concrete structure, for reinforcing bar connector 8 using cutting with a thickness of the steel plate of 5mm, 9 width of reinforcing bar limiting slot is 30mm,
10 longitudinal reinforcement of structure pile cages uses the spiral of diameter 22mm.
Positioned internal body 13 is set inside the post-cast strip steel bar cage 12 of basement bottom board 11, makes positioned internal body 13 with after
It pours and adjusting body 15 in position is set between band edge mould 14, reinforcing bar is set on post-cast strip end mould 14 and passes through slot 16 and only slurry 17,
Closed guard 18 is arranged in 13 free face of positioned internal body.
Basement bottom board 11 uses intensity for the commodity concrete placings of C35 with a thickness of 300mm；12 main reinforcement of post-cast strip steel bar cage
Using the spiral of diameter 16mm；Positioned internal body 13 is made of plastic plate, and cross section is of a lateral H shape, is highly 200mm.
Bolt 49 is connected in the free face setting baffle of internal positioning body 13, baffle connection bolt 49 uses diameter for the high intensity of 24mm
Bolt；Post-cast strip end mould 14 uses steel mould, with a thickness of 2mm；Position adjusts body 15 and uses pressure jack, tonnage 10t；Steel
It is 25mm that muscle, which passes through 16 width of slot,；Only slurry 17 is rubber slab, with a thickness of 2mm；Closed guard 18 uses glued mould, with a thickness of
1cm。
Waist rail anchor ear 19 uses strength grade to form for Q235, with a thickness of the steel plate rolling of 10mm, is highly 10cm.
Anchor ear connector 20 uses diameter for the high-strength bolt of 24mm.
Pressure dispersion plate 21 uses strength grade to cut for Q235, with a thickness of the steel plate of 10mm.
The width of waist rail locating slot 22 is 300mm, is highly 300mm；In the bottom of waist rail locating slot 22, reinforcing steel is set
Body 52；Vertical vertical plate 23 is using the steel plate with a thickness of 10mm, and horizontal fastening bolts 24 use diameter for the bolt of 24mm, reinforcing steel
Body 52 uses strength grade to cut for Q235, with a thickness of the steel plate of 10mm.
Bracing members 25 use the steel pipe that diameter is 2mm for 100mm, wall thickness.
It is Q235, with a thickness of 10mm, be highly that lower part connecting hoop plate 27 and top connecting hoop plate 26, which are all made of strength grade,
The steel plate rolling of 20cm forms.
Drag-line 28 is made of screw rod or steel pipe.
Connection inner support 29 and reinforcement diagonal brace 30 are all made of strength grade and are made of Q235, diameter of the steel pipe of 100mm.
Drag-line connection ring flat-plate 31 and ring flat-plate limit body 32 are all made of strength grade and are Q235, cut with a thickness of the steel plate of 10mm
It forms.
Hoisting ring 34 uses diameter that the circular ring shape that diameter is 10cm is made for the reinforcing bar of 10mm.
Pressure-bearing cap plate 33 uses strength grade to form for Q235, with a thickness of the steel plate rolling of 1cm, and cross section is inShape.
Cross spacing plate 35 uses strength grade to be made by Q235, with a thickness of the steel plate of 10mm.
36 cross section rectangular and trapezoidal shapes of hanging groove, including hanging plate bottom plate and hanging plate riser, hanging plate bottom plate and extension are shelved in support
Plate riser is welded to connect.
First jack unit 37 and the second jack unit 41 use tonnage for the pressure jack of 20t.
The steel plate rolling that cuff 38 uses strength grade to be 30cm for Q235, with a thickness of 1cm, width forms.
Wedge-shaped 39 cross section of obturator is in a rectangular trapezoid, use strength grade for Q235, with a thickness of 1cm steel plate welding and
At.
Hanging groove bolt 40 uses the high-strength bolt of diameter 24mm.
Sliding supporter 42 uses strength grade for Q235, is made with a thickness of the steel plate of 10mm.
Flexible joint layer 43 is used and is cut with a thickness of the sheet rubber of 2mm.
Outer wall of basement 44 is reinforced concrete structure, strength grade of concrete C30.
Water-proof sheet material 45 uses waterproof roll.
Waterproof connector 46 uses rubber slab, with a thickness of 2cm.
Plate bolt 47 uses diameter for the stainless steel bolt of 12mm.
Backfill 48 uses the good middle sand of gradation.
Baffle connection bolt 49 and top bolt 51 are all made of the high-strength bolt of diameter 24mm.
Adjusting body connecting plate 50 uses strength grade for Q235, cuts with a thickness of the steel plate of 10mm.
Fig. 9 is the construction process figure of a kind of deep foundation pit support system support changing structure for use of the present invention and construction method.Referring to Fig. 9 institute
Show the construction method of deep foundation pit support system support changing structure for use, including following construction procedure:
1) foundation pit supporting pile 1 is constructed: annular connecting plate 4 is set on the outside of the supporting pile cages 3 that waist rail 2 is highly located, and
Connection bolt 5 is preset on annular connecting plate 4；The linkage section of the top setting lattice column 7 of structure pile 6, in the connection of lattice column 7
2~4 placing of reinforcement connectors 8 are arranged in section outside, connect the reinforcing bar limiting slot 9 on reinforcing bar connector 8 with structure pile cages 10
Securely；
2) soil mass of foundation pit is excavated: foundation pit supporting pile 1 carries out soil mass of foundation pit excavation construction after forming intensity；
3) basement bottom board 11 is constructed: positioned internal body being arranged inside the post-cast strip steel bar cage 12 of basement bottom board 11
13, make that adjusting body 15 in position is arranged between positioned internal body 13 and post-cast strip end mould 14, reinforcing bar is set on post-cast strip end mould 14
Across slot 16 and only slurry 17；In internal 13 free face of positioning body, closed guard 18 is set；
4) waist rail locating slot 22 is arranged: in the outside of support pile 1, waist rail anchor ear is arranged in 4 position corresponding position of annular connecting plate
19, vertical vertical plate 23 is arranged in anchor ear connector 20, pressure dispersion plate 21 and waist rail locating slot 22 on waist rail locating slot 22, and
Horizontal fastening bolts 24 are set on vertical vertical plate 23, reinforcing steel body 52 is set in the bottom of waist rail locating slot 22；
5) lattice column 7 is constructed: the lattice column 7 on top and the linkage section of lattice column 7 being connected firmly, in 25 position of bracing members
Top connecting hoop plate 26 and lower part connecting hoop plate 27 are set, drag-line 28 is set on top connecting hoop plate 26, in lower part connecting hoop
Setting connection inner support 29 and reinforcement diagonal brace 30 on plate 27, setting drag-line connects ring flat-plate 31 and ring flat-plate limit body in connection inner support 29
32；
6) hoisting ring 34 installation of waist rail 2 and prestress application: is set on the both ends of waist rail 2 setting pressure-bearing cap plate 33, top；
Cross spacing plate 35 is arranged in the outside of pressure-bearing cap plate 33；Setting support at position is set in bracing members 25 and shelves hanging groove 36, and is led to
It crosses top bolt 51 hanging groove 36 is shelved into support and be connected firmly with waist rail 2；By in the lifting to waist rail locating slot 22 of waist rail 2, pass through
The press fastening waist rail 2 of horizontal fastening bolts 24 on vertical vertical plate 23；After all waist rails 2 are installed, the first press is filled
37 installations are set to 35 top of cross spacing plate of pressure-bearing cap plate 33, prestressing force is applied to waist rail 2 by the first jack unit 37；
7) bracing members 25 install: one end of bracing members 25 is placed in support and is shelved in hanging groove 36, the other end with connect inner support
The cuff 38 of 29 ends connects, and shelves in support and wedge-shaped obturator 39, the second jack unit 41 and sliding are arranged in hanging groove 36
Supporter 42；Flexible joint layer 43 is set inside cuff 38；Wedge-shaped obturator 39 shelves hanging groove 36 with support and passes through hanging groove spiral shell
Bolt 40 connects；
8) support replacement is constructed: successively being removed former base from bottom to top and is cheated support construction, passes through bracing members 25, the lattice column of rear setting
7 and waist rail 2 provide internal support to foundation pit；
9) outer wall of basement 44 and water-proof sheet material 45 are constructed: carry out outer wall of basement 44 and construct, with basement bottom board 11
Post-cast strip opposite position setting outer wall of basement 44 post-cast strip；Inside the post-cast strip steel bar cage 12 of outer wall of basement 44
Positioned internal body 13 is set, makes that adjusting body 15 in position is arranged between positioned internal body 13 and post-cast strip end mould 14；In positioned internal
Closed guard 18 is arranged in 13 free face of body；Waterproof connector 46 is set towards 1 side of support pile in outer wall of basement 44, makes splash guard
Material 45 is connect with waterproof connector 46 by plate bolt 47；
10) construction of backfill 48 and bracing members 25 are removed: bottom-up to be sequentially filled outer wall of basement using backfill 48
44 with the gap of support pile 1, the synchronous bracing members 25 and waist rail 2 for removing the position in 48 filling construction of backfill；
11) post empiricism: removing closed guard 18, releases position and adjusts constraint of the body 15 to post-cast strip end mould 14, takes
Post-cast strip end mould 14 and positioned internal body 13 out, carry out post-cast strip concrete pour and maintenance construction.
Claims (7)
1. the construction method of deep foundation pit support system support changing structure for use, it is characterised in that including following construction procedure:
1) foundation pit supporting pile (1) is constructed: annular connecting plate being arranged on the outside of the supporting pile cages (3) at waist rail (2) height
(4), connection bolt (5) and on annular connecting plate (4) is preset；The linkage section of top setting lattice column (7) of structure pile (6),
2~4 placing of reinforcement connectors (8) are set on the outside of the linkage section of lattice column (7), make the reinforcing bar limiting slot on reinforcing bar connector (8)
(9) it is connected firmly with structure pile cages (10)；
2) soil mass of foundation pit is excavated: foundation pit supporting pile (1) carries out soil mass of foundation pit excavation construction after forming intensity；
3) basement bottom board (11) is constructed: positioned internal body being arranged inside the post-cast strip steel bar cage (12) of basement bottom board (11)
(13), make that position adjusting body (15) is arranged between positioned internal body (13) and post-cast strip end mould (14), in post-cast strip end mould (14)
Upper setting reinforcing bar passes through slot (16) and only slurry (17)；In internal positioning body (13) free face, closed guard (18) are set；
4) waist rail locating slot (22) is arranged: embracing in the outside of support pile (1) and annular connecting plate (4) position corresponding position setting waist rail
(19), anchor ear connector (20), pressure dispersion plate (21) and waist rail locating slot (22) are bound round, is arranged on waist rail locating slot (22) perpendicular
Horizontal fastening bolts (24) are set to vertical plate (23), and on vertical vertical plate (23), are arranged in the bottom of waist rail locating slot (22)
Reinforcing steel body (52)；
5) lattice column (7) is constructed: the lattice column (7) on top and the linkage section of lattice column (7) being connected firmly, in lattice column (7)
Top connecting hoop plate (26) and lower part connecting hoop plate (27) is arranged in outside, and drag-line (28) are arranged on top connecting hoop plate (26),
Setting connection inner support (29) and reinforcement diagonal brace (30) on lower part connecting hoop plate (27), setting drag-line connects in connection inner support (29)
Connect ring flat-plate (31) and ring flat-plate limit body (32)；
6) hoisting ring waist rail (2) installation and prestress application: is set on the both ends of waist rail (2) setting pressure-bearing cap plate (33), top
(34)；Cross spacing plate (35) are arranged in the outside of pressure-bearing cap plate (33)；Setting support is shelved at bracing members (25) setting position
Hanging groove (36)；By in waist rail (2) lifting to waist rail locating slot (22), pass through the horizontal fastening bolts (24) on vertical vertical plate (23)
Press fastening waist rail (2)；After all waist rails (2) are installed, by the first jack unit (37) installation to pressure-bearing cap plate (33)
Cross spacing plate (35) top, by the first jack unit (37) to waist rail (2) apply prestressing force；Pass through top bolt (51)
Hanging groove (36) is shelved in support to be connected firmly with waist rail (2)；
7) bracing members (25) are installed: one end of bracing members (25) is placed in support and is shelved in hanging groove (36), the other end with connect in
Cuff (38) connection of (29) end is supportted, and is shelved in support and wedge-shaped obturator (39), the second press dress is set in hanging groove (36)
Set (41) and sliding supporter (42)；Flexible joint layer (43) are set inside cuff (38)；Wedge-shaped obturator (39) and support
Hanging groove (36) are shelved to connect by hanging groove bolt (40)；
8) support replacement is constructed: successively being removed former base from bottom to top and is cheated support construction, passes through bracing members (25), the lattice column of rear setting
(7) and waist rail (2) provides internal support to foundation pit；
9) outer wall of basement (44) and water-proof sheet material (45) construction: carry out outer wall of basement (44) construction, with basement bottom board
(11) post-cast strip of post-cast strip opposite position setting outer wall of basement (44)；Post-cast strip steel bar in outer wall of basement (44)
Positioned internal body (13) are set inside cage (12), make that position adjusting is arranged between positioned internal body (13) and post-cast strip end mould (14)
Body (15)；In internal positioning body (13) free face, closed guard (18) are set；In outer wall of basement (44) towards support pile (1) side
It is arranged waterproof connector (46), connect water-proof sheet material (45) by plate bolt (47) with waterproof connector (46)；
10) backfill (48) construction and bracing members (25) are removed: bottom-up to be sequentially filled outside basement using backfill (48)
The gap of wall (44) and support pile (1), the synchronous bracing members (25) and waist for removing the position in backfill (48) filling construction
Beam (2)；
11) post empiricism: removing closed guard (18), releases position and adjusts the constraint of body (15) to post-cast strip end mould (14),
Take out post-cast strip end mould (14) and positioned internal body (13), progress post-cast strip concrete pour and maintenance construction.
2. construction method according to claim 1, it is characterised in that: step 3) and step 9) the positioned internal body (13)
Be made of steel or plastic plate or timber, cross section it is of a lateral H shape orShape or " mouth " shape, in internal positioning body (13)
Free face is arranged baffle and connects bolt (49)；The position adjusts body (15) and uses pressure jack or mechanical bolt.
3. construction method according to claim 1, it is characterised in that: step 1) the reinforcing bar connector (8) is located at lattice
The outside of column (7), circumferentially uniform intervals are arranged, and one end and lattice column (7) of reinforcing bar connector (8) are welded to connect, the other end
It is arranged reinforcing bar limiting slot (9)；The diameter of the reinforcing bar limiting slot (9) is big by 5 compared with the longitudinal reinforcement of structure pile cages (10)~
10mm。
4. construction method according to claim 1, it is characterised in that: step 6) pressure-bearing cap plate (33) cross section is inShape is placed on the both ends of waist rail (2)；Hanging groove (36) cross section rectangular and trapezoidal shapes are shelved in the support.
5. construction method according to claim 1, it is characterised in that: described wedge-shaped obturator (39) cross section of step 7) is in
Right-angled trapezium is welded using steel plate.
6. deep foundation pit support system support changing structure for use according to claim 1 and construction method, it is characterised in that: step 6) and
Step 7) the support shelves hanging groove (36) cross section in Z-shaped, is formed using steel plate rolling, the trend and bracing members of bottom plate
(25) parallel.
7. deep foundation pit support system support changing structure for use according to claim 1 and construction method, it is characterised in that: step 9) institute
Post-cast strip end mould (14) is stated using steel form or aluminum alloy mould plate or plank sheathing, reinforcing bar is set on post-cast strip end mould (14) and is passed through
Slot (16) adjusts body connecting plate (50) and only slurry (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811172409.6A CN109537599B (en) | 2018-10-09 | 2018-10-09 | Construction method of support replacing structure of deep foundation pit support system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811172409.6A CN109537599B (en) | 2018-10-09 | 2018-10-09 | Construction method of support replacing structure of deep foundation pit support system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109537599A true CN109537599A (en) | 2019-03-29 |
| CN109537599B CN109537599B (en) | 2020-08-14 |
Family
ID=65843724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811172409.6A Active CN109537599B (en) | 2018-10-09 | 2018-10-09 | Construction method of support replacing structure of deep foundation pit support system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109537599B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482075A (en) * | 2022-03-08 | 2022-05-13 | 福建省茂宏建设工程有限公司 | Basement supporting structure and construction method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101300078B1 (en) * | 2011-10-10 | 2013-08-23 | 삼정건설 주식회사 | Variable supporting device for sheathing work pile |
| CN106013172A (en) * | 2016-07-01 | 2016-10-12 | 杭州江润科技有限公司 | Double row pile and diagonal brace combined soft soil deep foundation pit supporting structure and construction method |
| CN108005084A (en) * | 2017-11-29 | 2018-05-08 | 杭州江润科技有限公司 | The supporting of deep basal pit combined type and construction method |
-
2018
- 2018-10-09 CN CN201811172409.6A patent/CN109537599B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101300078B1 (en) * | 2011-10-10 | 2013-08-23 | 삼정건설 주식회사 | Variable supporting device for sheathing work pile |
| CN106013172A (en) * | 2016-07-01 | 2016-10-12 | 杭州江润科技有限公司 | Double row pile and diagonal brace combined soft soil deep foundation pit supporting structure and construction method |
| CN108005084A (en) * | 2017-11-29 | 2018-05-08 | 杭州江润科技有限公司 | The supporting of deep basal pit combined type and construction method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114482075A (en) * | 2022-03-08 | 2022-05-13 | 福建省茂宏建设工程有限公司 | Basement supporting structure and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109537599B (en) | 2020-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105926669B (en) | A kind of Construction Method of Metro Station | |
| CN202245617U (en) | Elevator well wall assembled by adopting combined type derricks | |
| CN105569224A (en) | Concrete-filled steel tube edge restraint overlapping integrated shear wall and preparing and installation methods thereof | |
| CN201943045U (en) | Automatic-moving hydraulic cantilever gantry concrete placement device for wave wall | |
| CN107905124B (en) | A kind of symmetrical expression rigid frame-continuous girder construction technology | |
| CN102900024B (en) | Using method for overturning die plate for large-scale concrete structure and | |
| CN107905111B (en) | A kind of rigid frame-continuous girder end bay construction technology | |
| CN108005401A (en) | A kind of support and change method of the column of existing frame structure base isolation reinforcement | |
| CN209211279U (en) | A kind of strutting system of pier top Cast-in-situ Beam | |
| CN108951840B (en) | Method for constructing arc-shaped outer wall of basement based on single-side formwork support of shaped support | |
| CN207568169U (en) | Suitable for the deep basal pit outer wall of basement PC template systems under the conditions of null field ground | |
| CN106351180A (en) | Full hydraulic opening self-propelled template system for aqueduct | |
| CN209907210U (en) | Integral pouring template system for T-shaped beam sidewalk board and sound barrier base | |
| CN109594581B (en) | River-crossing pipeline structure and installation method thereof | |
| CN114673169A (en) | Multi-layer large-span deep foundation pit cover-excavation forward-backward combined construction method for urban core area | |
| CN204690763U (en) | Long side slope protection concrete continuous fast pouring drawing-die system | |
| CN103882883B (en) | Tower crane and garage frame post share a foundation construction method | |
| CN103233426A (en) | Bailey beam support free of buttress in soft foundation and supporting method thereof | |
| CN102691267A (en) | High pier construction method for external whole operation platform | |
| CN109537599A (en) | The construction method of deep foundation pit support system support changing structure for use | |
| CN108930406A (en) | Construction method for large-formwork narrow-space wall based on integral assembly | |
| CN205382595U (en) | Integral shear force wall of steel pipe concrete edge constraint coincide | |
| CN210256628U (en) | Self-adaptive outer mold system for prefabricating concrete | |
| CN211621667U (en) | Tubular pile cushion cap girder steel rail mounted tower machine walking foundation structure | |
| CN108098978A (en) | A kind of assembled underground pipe gallery epimere producing device and production method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201009 Address after: 629000 zhuotang Avenue, Penglai Town, Daying County, Suining City, Sichuan Province Patentee after: SICHUAN YAOSHUN CONSTRUCTION GROUP Co.,Ltd. Address before: 310015, room 3, unit 3, Gongshu District Wanda Commercial Center, Hangzhou, Zhejiang 1901, China Patentee before: HANGZHOU JIANGRUN TECHNOLOGY Ltd. |