CN205296175U - High pressure -bearing depth of water excavation supporting stock structure - Google Patents
High pressure -bearing depth of water excavation supporting stock structure Download PDFInfo
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- CN205296175U CN205296175U CN201521059116.9U CN201521059116U CN205296175U CN 205296175 U CN205296175 U CN 205296175U CN 201521059116 U CN201521059116 U CN 201521059116U CN 205296175 U CN205296175 U CN 205296175U
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Abstract
The utility model relates to a high pressure -bearing depth of water excavation supporting stock structure, its one end sets up on underground continuous wall, the other end is fixed in the soil body, it includes the PVC sleeve pipe and sets up at the intraductal anchor rope of PVC cover, a slip casting pipe, the secondary high pressure slip casting pipe and the anchor rod grout body, the PVC sleeve pipe includes free section and anchor section, anchor section periphery is equipped with fixedly with anchor section high pressure grouting segment, the free section end sets up drill way leaking stoppage stagnant water structure and anticorrosion structure, anchor rope in the anchor section is fixed by keeping apart the centering support, free section's free section's anchor rope is fixed by the anchor rope disrance sleeve, and the anchor rope tip is fixed by the anchor head. The utility model discloses an adopt above -mentioned structure to obtain high pressure -bearing depth of water excavation supporting stock structure, be used for fixed underground continuous wall with this stock structure, guaranteed the stability of pore -forming in high pressure -bearing water sand cobble stratum, the reliability of anchor section anchor power to have excellent drill way leaking stoppage prevention of seepage nature, the efficiency of construction is high, has apparent technological economic benefits.
Description
Technical field
This utility model belongs to underground engineering field, is specifically related to a kind of high artesian deep foundation pit support anchor structure existed suitable in stratum under high artesian or pore-forming difficulty.
Background technology
In foundation pit supporting project, frequently with supporting construction pattern in conjunction with prestressed anchor of diaphram wall or cast-in-situ bored pile, stratum is required higher by prestressed anchor, in gravel soil layer, during drilling and forming hole construction, hole wall easily caves in, when particularly gravel soil layer existing high artesian, along with artesian water is constantly gushed out, a large amount of granules in soil layer are made to run off, settle after causing hole and deform excessive, affecting the safety of neighboring buildings, facility.
High artesian stratum carries out anchor bolt construction need to solve following problem: (1) anchor pole from aperture, free segment be in artesian aquifer to anchoring section, how smoothly pore-forming and ensure hole depth, aperture; (2) after anchor rod body installs hand-hole, effective closure in aperture how is realized, it is to avoid the support system soil body behind runs off and too much causes that anchor stress loss or supporting wall deformation are excessive; (3) how sandy gravel artesian water stratum realizes desirable injecting cement paste to reach enough axle power; (4) during anchor pole tensioning fixation, there is crack in aperture, how further to block leak stopping.
Utility model content
The purpose of this utility model be in that in high artesian sand-pebble layer pore-forming difficulty, the soil body is easy to run off, injecting cement paste is difficult to ensure that and aperture Lost circulation problems, provide high artesian deep foundation pit support anchor structure, this structure adopts overcoat PVC sleeve pipe, anchor cable once grouting are installed, Twice High Pressure Splitting Grouting forms anchoring section high-pressure slip-casting body, orifice expansion stopper and the fast hard material closure of rapid hardening, and carry out leak stopping in conjunction with aperture slip casting.
Described high artesian deep foundation pit support anchor structure, one end is arranged on diaphram wall, the other end is fixed in the soil body, including PVC sleeve pipe and be arranged on the anchor cable in PVC sleeve pipe, once grouting pipe, secondary high-pressure slip-casting pipe and bolt grouting body, it is characterized in that PVC sleeve pipe includes free segment and anchoring section, anchoring section periphery is provided with the anchoring section high-pressure slip-casting body for fixing anchoring section, on the diaphragm wall located underground of free segment termination, described free segment termination arranges aperture leak stopping water sealing structure and anticorrosion structure, it is positioned at the anchor cable of anchoring section and medium-height trestle is fixed by isolating, the secondary high-pressure slip-casting tube-surface being positioned at anchoring section is provided with injected hole, the anchor cable end being positioned at free segment is fixed by anchor head, the anchor cable being positioned at free segment is fixed by anchor cable disrance sleeve.
Described high artesian deep foundation pit support anchor structure, it is characterized in that the steel reinforcement cage of diaphram wall ties up admittedly reserved steel pipe at anchor pole correspondence construction location, reserved steel pipe is provided with seal plate and waist rail connecting plate, waist rail connecting plate is positioned at reserved steel tube head, steel wale one end is arranged on waist rail connecting plate, other end connection is inclined at base, arranges correcting wedge between steel wale and base, and anchor head is positioned at outside base.
Described high artesian deep foundation pit support anchor structure, it is characterized in that described anchoring section is provided with injected hole, anchoring section periphery is provided with the anti-filter geotextiles for temporary enclosed, high-pressure slip-casting is carried out by secondary high-pressure slip-casting pipe, serosity injects through injected hole and forms anchoring section high-pressure slip-casting body on the soil body that anchoring section is peripheral, is used for fixing anchoring section.
Described high artesian deep foundation pit support anchor structure, it is characterized in that described aperture leak stopping water sealing structure includes cavity injecting cement paste after water-swellable stopper, leakage stop and wall, described water-swellable stopper is fixed in free segment for clogging cavity injecting cement paste after bolt grouting body and wall, and leakage stop is positioned at outside water-swellable stopper for fixing water-swellable stopper.
Described high artesian deep foundation pit support anchor structure, it is characterized in that described water-swellable stopper is provided with anchor cable through hole, exhaust duct aperture, secondary high-pressure slip-casting pore, preservative filtration pore, slip casting pore and once grouting pore, each hole is correspondingly arranged anchor cable, exhaustor, secondary high-pressure slip-casting pipe, preservative filter tube, Grouting Pipe and once grouting pipe, after wall, cavity injecting cement paste is formed by Grouting Pipe slip casting, and bolt grouting body is formed by once grouting pipe slip casting.
Described high artesian deep foundation pit support anchor structure, it is characterized in that the steel reinforcement cage of diaphram wall is also reserved with aperture secondary plugging Grouting Pipe at anchor pole correspondence construction location, the splitting closure of water under high pressure mud is injected by aperture secondary plugging Grouting Pipe in the crack that after anchorage cable stretching, port closing occurs.
This utility model has the characteristics that and beneficial effect:
1) this utility model is by arranging PVC sleeve pipe, bolt grouting body is formed in this PVC sleeve pipe slip casting, it is effectively increased the quality of injecting cement paste, reduce the loss of cement mortar, the anchoring section of PVC sleeve pipe arranges injected hole, and when Twice High Pressure Splitting Grouting, serosity diffuses in the soil body of PVC sleeve pipe neighboring through injected hole, form anchoring section high-pressure slip-casting body, be effectively increased the anchoring effect of anchor pole;
2) closure at this utility model anchor pole hole adopts the multiple leaking-stopping measure of cavity injecting cement paste after the leakage stop and wall that water-swellable stopper, the fast hard material of rapid hardening formed, and effectively solves the problem of anchor pole aperture easy to leak in high artesian;
3) this utility model reserved steel pipe, seal plate, connecting plate and aperture secondary plugging Grouting Pipe on the steel reinforcement cage of diaphram wall, it is possible to improve anchor bolt construction speed and strengthen aperture stagnant water effect.
Accompanying drawing explanation
Fig. 1 is high artesian deep foundation pit support anchor structure schematic diagram;
Fig. 2 is A-A section structure for amplifying schematic diagram in Fig. 1;
Fig. 3 is B-B section structure for amplifying schematic diagram in Fig. 1;
Fig. 4 is C-C section structure for amplifying schematic diagram in Fig. 1;
Fig. 5 is high artesian deep foundation pit support anchor pole aperture structure for amplifying schematic diagram.
In figure: 1-diaphram wall, 2-free segment, 3-anchoring section, 4-anchoring section high-pressure slip-casting body, 5-anchor cable, 6-free segment anchor cable disrance sleeve, 7-isolates medium-height trestle, cavity injecting cement paste after 8-wall, 9-water-swellable stopper, 901-anchor cable through hole, 902-exhaust duct aperture, 903-secondary high-pressure slip-casting pore, 904-preservative filters pore, 905-slip casting pore, 906-once grouting pore, 10-leakage stop, 11-preservative filter tube, 12-steel wale, 13-correcting wedge, 14-base, 15-anchor head, 16-reserves steel pipe, 17-seal plate, 18-waist rail connecting plate, 19-once grouting pipe, 20-secondary high-pressure slip-casting pipe, 21-bolt grouting body, 22-anti-filter geotextiles, 23-anticorrosion oxidant layer, 24-exhaustor, 25-Grouting Pipe, 26-excavation of foundation pit face, 27-aperture secondary plugging Grouting Pipe.
Detailed description of the invention
Below in conjunction with accompanying drawing and by embodiment, this utility model being described in further detail, following example are that explanation of the present utility model is not limited to following example.
With reference to shown in Fig. 1-5, high artesian deep foundation pit support anchor structure of the present utility model, one end is arranged on diaphram wall 1, the other end is fixed in the soil body, for supporting diaphram wall 1, including PVC sleeve pipe and be arranged on the anchor cable 5 in PVC sleeve pipe, once grouting pipe 19, secondary high-pressure slip-casting pipe 20 and bolt grouting body 21, anchor cable 5, once grouting pipe 19, secondary high-pressure slip-casting pipe 20 and length are stretched out outside diaphram wall 1, and bolt grouting body 21 is formed by once grouting pipe 19 slip casting from the bottom up.
It is beneficial to the excavation work in excavation of foundation pit face 26, for the ease of the construction of this anchor structure 1 and fixing, as shown in Figure 1 and Figure 5, the steel reinforcement cage of diaphram wall 1 ties up admittedly reserved steel pipe 16 at anchor pole correspondence construction location, reserved steel pipe 16 is provided with seal plate 17 and waist rail connecting plate 18, waist rail connecting plate 18 is positioned at reserved steel pipe 16 termination, steel wale 12 one end is arranged on waist rail connecting plate 18, other end connection is inclined at base 14, correcting wedge 13 is set between steel wale 12 and base 14, described PVC sleeve pipe includes free segment 2 and anchoring section 3, simultaneously, the steel reinforcement cage of diaphram wall 1 is also reserved with aperture secondary plugging Grouting Pipe 27 at anchor pole correspondence construction location, the splitting closure of water under high pressure mud is injected by aperture secondary plugging Grouting Pipe 27 in the crack that after anchor cable 5 stretch-draw, port closing occurs.
As shown in the figure, described anchoring section 3 periphery is provided with the anchoring section high-pressure slip-casting body 4 for fixing anchoring section 3, medium-height trestle 7 is fixed by the anchor cable 5 being positioned at anchoring section 3 by isolation, anchoring section 3 is provided with injected hole, anchoring section 3 periphery is provided with the anti-filter geotextiles 22 for temporary enclosed, carrying out high-pressure slip-casting by secondary high-pressure slip-casting pipe 20, serosity injects through injected hole and forms anchoring section high-pressure slip-casting body 4 on the soil body of anchoring section 3 periphery, is used for fixing anchoring section 3.
On the diaphragm wall 1 located underground of described free segment 2 termination, described free segment 2 termination arranges aperture leak stopping water sealing structure and anticorrosion structure, anchor cable 5 end of free segment 2 is fixed by anchor head 15, and anchor head 15 is positioned at outside base 14, and the anchor cable 5 being positioned at free segment 2 is fixed by anchor cable disrance sleeve 6.
Described aperture leak stopping water sealing structure includes water-swellable stopper 9, cavity injecting cement paste 8 after leakage stop 10 and wall, described water-swellable stopper 9 is fixed in free segment 2 for clogging cavity injecting cement paste 8 after bolt grouting body 21 and wall, leakage stop 10 is positioned at outside water-swellable stopper 9 for fixing water-swellable stopper 9, as shown in Figure 4, described water-swellable stopper 9 is positioned at port, reserved steel pipe 16 lower end, water-swellable stopper 9 is provided with anchor cable through hole 901, exhaust duct aperture 902, secondary high-pressure slip-casting pore 903, preservative filters pore 904, slip casting pore 905 and once grouting pore 906, anchor cable 5 is installed through anchor cable through hole 901, exhaustor 24 is installed through exhaust duct aperture 902, secondary high-pressure slip-casting pipe 20 is installed through secondary high-pressure slip-casting pore 903, preservative filter tube 11 filters pore 904 through preservative and installs, Grouting Pipe 25 is installed through slip casting pore 905, once grouting pipe 19 is installed through once grouting pore 906, after wall, cavity injecting cement paste 8 is formed by Grouting Pipe 25 slip casting, reserved steel pipe 16 mouth of pipe at diaphram wall 1 is arranged to inject the preservative transition conduit 11 of preservative, form anticorrosion oxidant layer 23, for anchor head 15 is carried out anticorrosion.
In this utility model embodiment, the cutting depth 20m in excavation of foundation pit face 26, the thickness 1m of diaphram wall 1, high artesian sand-pebble layer locates below ground level 5 ~ 10m scope, artesian head is subsurface 3m, one layer of anchor pole it is provided with in sand ovum formation volumes, anchor pole level interval 1.5m, bolt diameter 150mm, the body of rod adopts the steel strand wires of 4 intensity 1860MPa, PVC sleeve outer 150mm, thickness 2mm, anchoring section 3 is provided with the hole of diameter 5mm, hole circumferentially arranges 4 ~ 6, longitudinal pitch 200mm, the anti-filter geotextiles 22 of anchoring section 3 thickness 1mm, once grouting pipe 19 and secondary high-pressure slip-casting pipe 20 adopt pvc pipe, external diameter 20mm, thickness 2mm, secondary high-pressure slip-casting pipe 20 is provided with the injected hole of diameter 2mm on the surface of anchoring section 3, blend compounds band temporary plugging. the reserved steel pipe 16 internal diameter 160mm of diaphram wall 1, thickness 5mm, length 1m, seal plate 17 is annular, external diameter 400mm, thickness 5mm, water-swellable stopper 9 is more slightly smaller than reserved steel pipe 16 internal diameter, and on it, through hole is more bigger than external diameters such as corresponding anchor cable 5, Grouting Pipe, length 200mm, leakage stop 10 length 400mm.
Claims (6)
1. high artesian deep foundation pit support anchor structure, one end is arranged on diaphram wall (1), the other end is fixed in the soil body, including PVC sleeve pipe and be arranged on the anchor cable (5) in PVC sleeve pipe, once grouting pipe (19), secondary high-pressure slip-casting pipe (20) and bolt grouting body (21), it is characterized in that PVC sleeve pipe includes free segment (2) and anchoring section (3), anchoring section (3) periphery is provided with anchoring section high-pressure slip-casting body (4) for fixing anchoring section (3), on free segment (2) termination diaphragm wall located underground (1), described free segment (2) termination arranges aperture leak stopping water sealing structure and anticorrosion structure, medium-height trestle (7) is fixed by the anchor cable (5) being positioned at anchoring section (3) by isolation, secondary high-pressure slip-casting pipe (20) surface being positioned at anchoring section (3) is provided with injected hole, anchor cable (5) end being positioned at free segment (2) is fixed by anchor head (15), the anchor cable (5) being positioned at free segment (2) is fixed by anchor cable disrance sleeve (6).
2. high artesian deep foundation pit support anchor structure according to claim 1, it is characterized in that the steel reinforcement cage of diaphram wall (1) ties up admittedly reserved steel pipe (16) at anchor pole correspondence construction location, reserved steel pipe (16) is provided with seal plate (17) and waist rail connecting plate (18), waist rail connecting plate (18) is positioned at reserved steel pipe (16) termination, steel wale (12) one end is arranged on waist rail connecting plate (18), other end connection is inclined at base (14), correcting wedge (13) is set between steel wale (12) and base (14), anchor head (15) is positioned at base (14) outside.
3. high artesian deep foundation pit support anchor structure according to claim 1 and 2, it is characterized in that described anchoring section (3) is provided with injected hole, anchoring section (3) periphery is provided with the anti-filter geotextiles (22) for temporary enclosed, high-pressure slip-casting is carried out by secondary high-pressure slip-casting pipe (20), serosity injects through injected hole and forms anchoring section high-pressure slip-casting body (4) on the soil body that anchoring section (3) is peripheral, is used for fixing anchoring section (3).
4. high artesian deep foundation pit support anchor structure according to claim 1 and 2, it is characterized in that described aperture leak stopping water sealing structure includes cavity injecting cement paste (8) after water-swellable stopper (9), leakage stop (10) and wall, described water-swellable stopper (9) is fixed in free segment (2) to be used for and clogs cavity injecting cement paste (8) after bolt grouting body (21) and wall, and leakage stop (10) is positioned at water-swellable stopper (9) outside and is used for fixing water-swellable stopper (9).
5. high artesian deep foundation pit support anchor structure according to claim 4, it is characterized in that described water-swellable stopper (9) is provided with anchor cable through hole (901), exhaust duct aperture (902), secondary high-pressure slip-casting pore (903), preservative filters pore (904), slip casting pore (905) and once grouting pore (906), each hole is correspondingly arranged anchor cable (5), exhaustor (24), secondary high-pressure slip-casting pipe (20), preservative filter tube (11), Grouting Pipe (25) and once grouting pipe (19), after wall, cavity injecting cement paste (8) is formed by Grouting Pipe (25) slip casting, bolt grouting body (21) is formed by once grouting pipe (19) slip casting.
6. high artesian deep foundation pit support anchor structure according to claim 2, it is characterized in that the steel reinforcement cage of diaphram wall (1) is also reserved with aperture secondary plugging Grouting Pipe (27) at anchor pole correspondence construction location, the splitting closure of water under high pressure mud is injected by aperture secondary plugging Grouting Pipe (27) in the crack that after anchor cable (5) stretch-draw, port closing occurs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521059116.9U CN205296175U (en) | 2015-12-18 | 2015-12-18 | High pressure -bearing depth of water excavation supporting stock structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521059116.9U CN205296175U (en) | 2015-12-18 | 2015-12-18 | High pressure -bearing depth of water excavation supporting stock structure |
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| CN205296175U true CN205296175U (en) | 2016-06-08 |
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| CN201521059116.9U Active CN205296175U (en) | 2015-12-18 | 2015-12-18 | High pressure -bearing depth of water excavation supporting stock structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630472A (en) * | 2017-10-31 | 2018-01-26 | 中冶天工集团有限公司 | Through the antipriming of TRD uniform thickness Soil-cement diaphragm walls |
| CN108442427A (en) * | 2018-05-02 | 2018-08-24 | 中国十七冶集团有限公司 | A kind of bracing means for preventing diaphram wall from settling |
| CN109024582A (en) * | 2018-06-26 | 2018-12-18 | 重庆交通大学 | reinforced anchor rod component |
| CN109555120A (en) * | 2018-12-05 | 2019-04-02 | 中铁二院工程集团有限责任公司 | A kind of prestressing force shock-resistant and energy-dissipating anchor pole |
| CN109853550A (en) * | 2019-03-29 | 2019-06-07 | 华侨大学 | A kind of side dress T-type plug and anchor pole |
| CN111579229A (en) * | 2020-05-19 | 2020-08-25 | 中国水利水电科学研究院 | Test device for researching prestress transmission rule of anchor cable and working method thereof |
-
2015
- 2015-12-18 CN CN201521059116.9U patent/CN205296175U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630472A (en) * | 2017-10-31 | 2018-01-26 | 中冶天工集团有限公司 | Through the antipriming of TRD uniform thickness Soil-cement diaphragm walls |
| CN108442427A (en) * | 2018-05-02 | 2018-08-24 | 中国十七冶集团有限公司 | A kind of bracing means for preventing diaphram wall from settling |
| CN109024582A (en) * | 2018-06-26 | 2018-12-18 | 重庆交通大学 | reinforced anchor rod component |
| CN109555120A (en) * | 2018-12-05 | 2019-04-02 | 中铁二院工程集团有限责任公司 | A kind of prestressing force shock-resistant and energy-dissipating anchor pole |
| CN109853550A (en) * | 2019-03-29 | 2019-06-07 | 华侨大学 | A kind of side dress T-type plug and anchor pole |
| CN109853550B (en) * | 2019-03-29 | 2023-12-19 | 华侨大学 | Side-mounted T-shaped plug and anchor rod |
| CN111579229A (en) * | 2020-05-19 | 2020-08-25 | 中国水利水电科学研究院 | Test device for researching prestress transmission rule of anchor cable and working method thereof |
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