CN108104111B - It is a kind of accurately to descend wall construction method - Google Patents
It is a kind of accurately to descend wall construction method Download PDFInfo
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- CN108104111B CN108104111B CN201711471227.4A CN201711471227A CN108104111B CN 108104111 B CN108104111 B CN 108104111B CN 201711471227 A CN201711471227 A CN 201711471227A CN 108104111 B CN108104111 B CN 108104111B
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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
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
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Abstract
The present invention relates to underground construction technology field, discloses and a kind of accurately descend wall construction method, comprising the following steps: several only pile sinking of lower bottom part implantation on ground；Support plate is arranged in the top of groove, support plate is fixed with the hoist cable lower end on every loop wheel machine, the first wall width is poured the top surface of support plate is whole, the demoulding after the intensity of the first wall width reaches strength of mould stripping, the synchronous decline a distance of hoist cable, the second wall width is poured the top surface concrete of the first wall width is laterally whole, is sunk down into the second wall width by suspender concordant with ground；And so on, if successively splicing dry wall width in the top surface of the second wall width, integral sinking is primary after often pouring wall width, and underground wall body is finally formed in groove.Underground wall body made from the construction method, own dimensions, flat shape precision are high, and horizontal position, vertical position positioning accuracy are high, so that it is guaranteed that underground wall body stability under loading, total quality significantly improve, barrier performance is good, securely and reliably.
Description
Technical field
A kind of descending the present invention relates to underground construction technology field more particularly to accurately wall construction method.
Background technique
With the development of society, urban construction is maked rapid progress, underground engineering is more and more, such as basement in high rise building,
The underground constructions engineering such as underground gallery, multi-layer underground garage, subway tunnel, these engineerings are all Construction of Deep Foundation, are applied in underground
The safety and stability that construction safety and surrounding enviroment are ensured during work, needs to carry out foundation pit enclosure.Foundation pit enclosure is basic
Step are as follows: underground fluting, slurrying, wall processed in slot, wall technique processed is very more, such as campshed wall, cast-in-place diaphram wall, half prefabricated
Half cast-in-place subterranean wall.
Campshed wall belongs to temporary supporting structure, and protecting wall, secondary construction in protecting wall are formed after the completion of the construction of campshed wall
Main body wall is prepared, after underground main body wall is constructed, the effect of temporary supporting structure is terminated, and campshed wall becomes permanent discarded
Object significantly increases engineering cost, extends the duration, and occupies certain land area；Campshed wall longitudinal seam is very more, holds
Easily lead to infiltration；And campshed wall no matter is horizontally oriented in underground or vertical direction positioning accuracy is all lower, so as to cause
Pressure-bearing is unstable, exists and collapses risk.
Cast-in-place diaphram wall is put into steel reinforcement cage in the mud in groove, and insertion pours pipe in mud, is existed by high pressure
Trench bottom pours, and pours pipe after pipe often pours once and moves up, whole face wall is completed until pouring, made of this kind of construction method
Wall had not only been used as the temporary support structures of foundation pit, but also as the permanent main body wall of basement, considerably reduced project cost, but
There is also many drawbacks for the construction method of diaphram wall: (1) requiring height to mud, mud conditioning is at high cost and mud is easy to make
At pollution；(2) walls concrete quality is uneven, unstable, and wall own dimensions, flat shape, vertical position precision are difficult
With control, there are leakage problems for wall width junction；(3) because of underwater grouting, after steel reinforcement cage is put into mud, mud is stained on reinforcing bar
Slurry, bond stress reduce, and wall quality can reduce, the random infiltration of Yi Yinqi metope, and metope is coarse, and some areas reinforcing bar is straight
It connects and exposes, and there is also folder mud phenomenon, need to be arranged water-resistant liner wall；(4) difficult, underground is accurately positioned in built-in fitting
Diaphragm wall can only be as a part of main structure wall.
Half prefabricated half cast-in-place subterranean wall is arranged in prefabricated wall is Pork-pieces in groove, between wall and wall
There are axial clearances, then casting concrete in gap again, by concrete by adjacent two pieces of wall connectings；This kind of wall construction
There is the above problem between campshed wall and cast-in-place diaphram wall in method.
Summary of the invention
The present invention in order to solve underground wall body made from underground wall body construction method in the prior art either own dimensions,
Flat shape, horizontal position, vertical position have that precision is low, ropy problem, provide a kind of high-precision underground wall body
Construction method, the underground wall body as made from this kind of construction method, own dimensions, flat shape precision are high, horizontal position, vertical
Position positioning accuracy is high, so that it is guaranteed that underground wall body stability under loading, total quality significantly improve, barrier performance is good, securely and reliably.
To achieve the goals above, the present invention adopts the following technical scheme:
It is a kind of accurately to descend wall construction method, comprising the following steps: a, the bottom portion of groove implantation in underground are several only
Pile sinking, only the top surface of pile sinking is coplanar；B, several loop wheel machines are installed positioned at the top of groove on ground, support is arranged in the top of groove
Plate, support plate are fixed with the hoist cable lower end on every loop wheel machine；The end face center of support plate installs water distributor, the downside of water distributor
Equipped with several apopores, support plate is equipped with the through-hole that connects one to one with apopore, and it is several vertical to connect on water distributor
Water inlet pipe, the bottom of support plate are equipped with several soil pressure cases corresponding with water inlet pipe, and the inside lower end of support plate is equipped with rib；
C, the first wall width is poured the top surface concrete of support plate is laterally whole, the demoulding after the intensity of the first wall width reaches strength of mould stripping,
The synchronous decline a distance of hoist cable, the first wall width sink down into it is concordant with ground, it is laterally whole with concrete in the top surface of the first wall width
The second wall width is poured, the demoulding after the intensity of the second wall width reaches strength of mould stripping is sunk down into the second wall width and ground by suspender
Concordantly；And so on, if successively splicing dry wall width in the top surface of the second wall width, integral sinking is primary after often pouring wall width,
Underground wall body is finally formed in groove；D, after the first wall width sinks to bottom portion of groove, the cement of high pressure is injected into water inlet pipe
Slurry, cement slurry is discharged from water distributor, to mud between bottom portion of groove and the first wall width be squeezed out, in the bottom of the first wall width
Strong cement base bottom is formed, while cement slurry also squeezes out the mud on the outside of wall width between groove, in final water inlet pipe
Full of cement slurry.
Preferably, it is 4cm-6cm that only the top surface of pile sinking, which is higher by the distance of bottom portion of groove, in step a.
Preferably, the support plate is steel plate in step b, the lower end of the rib is equipped with wedge-shaped cutting edge.
Preferably, being equipped with sealing rod between adjacent twice wall width.
Preferably, in step c, the transverse direction of the first wall width is whole to pour that steps are as follows: installing steel reinforcement cage, mould in support plate top surface
The two sides of steel reinforcement cage are arranged in plate, the first wall of concreting width are used between two pieces of templates, the upper end of steel reinforcement cage is higher by first
The top surface of wall width, hoist cable, water inlet pipe are embedded in the first wall width, the form removal after the first wall width reaches strength of mould stripping.
Preferably, before every piece of wall width sinks, the upper end of water inlet pipe connects high-pressure water pipe, wall width sinking watching in step c
In, when the pressure value of some soil pressure case is greater than the set value, water inlet pipe corresponding with the soil pressure case injects high pressure water,
And then mud is dissipated into solution, dilution, reduces resistance.
Preferably, if the lateral surface of every piece of wall width is equipped with the vertical mud drainage slot in arterial highway, between adjacent two pieces of wall width
Mud drainage slot alignment connection.
It is equipped with supporting beam preferably, being located between the inner wall of the wall width of bottom of foundation ditch, supporting beam and corresponding wall width are same
Step, which pours, to be made, and is equipped with supporting beam escape groove with the corresponding position of supporting beam on ground.
Therefore, the invention has the following advantages:
(1) wall width pours manufacture on the ground, and the own dimensions of wall width, flat shape precision are high；Bottom portion of groove is using only heavy
Stake, it is ensured that the horizontal position of underground wall body, vertical position precision are high；Gradually sunk using hoist cable synchronization, when sinking passes through soil pressure
Sensor, water inlet pipe adjust slurry resistance, so that it is guaranteed that synchronous, stable, the smooth sinking of wall width, effectively prevents wall width from sinking
It is tilted in journey, it is ensured that the bottom of wall width is steadily contacted with only pile sinking, positions.
(2) all wall width are prepared on the ground, and the construction of wall width is easily manufactured, and work progress is quality controllable, overall structure
Stablize, quality height.
(3) direct concreting between adjacent wall width, connected by steel reinforcement cage, wall width longitudinally splices, place's setting of splicing
Sealing rod, barrier performance are excellent.
(4) after all wall width connections sink down into bottom portion of groove, wall construction is entirely descended to complete, this kind of underground wall body collection is anti-
Revetment, inwall and one eliminate secondary construction, greatly shorten the duration.
Detailed description of the invention
Fig. 1 is the top view of further groove of the present invention.
Fig. 2 is cross-sectional view at A-A in Fig. 1.
Fig. 3 prepares schematic diagram for the first wall width.
Fig. 4 is after the first wall width sinks, prepares the second wall width schematic diagram.
Fig. 5 is the top view of the first wall width.
Fig. 6 is the side connection schematic diagram of the first wall width, the second wall width.
Fig. 7 is the connection schematic diagram of supporting beam and wall width.
In figure: mud guide groove 1 leads wall 2, groove 3, supporting beam escape groove 4, only pile sinking 5, loop wheel machine 6, support plate 7, rib
70, hoist cable 8, water distributor 9, through-hole 10, water inlet pipe 11, soil pressure case 12, steel reinforcement cage 13, template 14, the first wall 15, sealing
Item 16, supporting beam 17, the second wall 18, mud drainage slot 19.
Specific embodiment
Present invention will be further described below with reference to the accompanying drawings and specific embodiments:
It is as depicted in figs. 1 and 2 a kind of accurately to descend wall construction method, comprising the following steps: with groover on ground
On open mud guide groove 1, wall 2 is led in setting, in the bottom recessing 3 of mud guide groove, preparation density is 1.4g/cm in groove3-
1.7g/cm3Mud, in the present embodiment for the Back Word connected in star shown in Fig. 1, when recessing, supporting beam is kept away
Slot 4 is allowed to leave together.
As shown in Fig. 3, Fig. 4 and Fig. 6, several only pile sinking 5 of implantation in the bottom of groove 3, only the top surface of pile sinking is coplanar, only sinks
The distance that the top surface of stake is higher by bottom portion of groove is 4cm-6cm；Several loop wheel machines 6 are installed positioned at the top of groove on ground, groove
Support plate 7 is arranged in top, and support plate is fixed with 8 lower end of hoist cable on every loop wheel machine；The end face center of support plate installs water distributor
9, the downside of water distributor is equipped with several apopores, and support plate is equipped with the through-hole 10 to connect one to one with apopore, water distribution
Several vertical water inlet pipes 11 are connected on pipe, the bottom of support plate is equipped with several soil pressure cases 12 corresponding with water inlet pipe, branch
Fagging is steel plate, and the inside lower end of support plate 7 is equipped with rib 70, and the lower end of rib is equipped with wedge-shaped cutting edge.
Steel reinforcement cage 13 is installed in support plate top surface, the two sides of steel reinforcement cage are arranged in template 14, with mixed between two pieces of templates
Solidifying soil is laterally whole to pour the first wall 15, and the upper end of steel reinforcement cage is higher by the top surface of the first wall width, and hoist cable, water inlet pipe are embedded to wall width
It is interior, it is embedded with sealing rod 16 in the top surface of the first wall width, the half of sealing rod is embedded in the first wall width, the other half dew of sealing rod
Out outside the first wall width, the form removal after wall width reaches strength of mould stripping；The upper end of every water inlet pipe connects high-pressure water pipe, controls institute
Have the synchronous decline of the hoist cable of loop wheel machine, until the top surface of the first wall width drop to it is concordant with ground, the first wall width during decline,
When the pressure value of some soil pressure case is greater than the set value, water inlet pipe corresponding with the soil pressure case injects high pressure water, will
Local mud dissipates solution, dilution, reduces slurry resistance, until after the pressure value of the soil pressure case is less than setting value, corresponding height
Pressure pipe stops water filling.
As shown in Figure 4, Figure 5 and Figure 6, the second wall 18 is poured the top surface of the first wall width is laterally whole in the same way, the
It is docked between one wall width and the second wall width by steel reinforcement cage, seam crossing is sealed by sealing rod 16, then declines the second wall width
It is extremely concordant with ground, as shown in fig. 7, supporting beam 17 is sunk together with the first wall width, when the first wall width sinks with such
Push away, if successively splicing dry wall width in the top surface of the second wall width, integral sinking is primary after often pouring wall width, when the first wall width with
Only after pile sinking contact, complete underground wall body is formed in groove；When wall width sinks, in order to reduce penetration resistance, ensure mud
It is smoothly discharged, if the lateral surface of every piece of wall width is equipped with the vertical mud drainage slot 19 in arterial highway, the mud drainage slot between adjacent two pieces of wall width
Alignment connection, mud smooth discharge from mud drainage slot when wall width sinks, in groove；As shown in fig. 7, being located at the wall of bottom of foundation ditch
Be equipped with supporting beam 17 between the inner wall of width, supporting beam and corresponding wall width synchronize pour and be made, when underground, wall construction completes it
Afterwards, foundation pit is dug within the scope of underground wall body, the depth of foundation pit is H2, and after foundation pit is dug, supporting beam is placed exactly in the bottom of foundation pit
Portion, several supporting beams form support system in bottom of foundation ditch.
After the first wall width sinks to bottom portion of groove, hoist cable is separated with loop wheel machine, and the cement slurry of high pressure, water are injected into water inlet pipe
Mud is discharged from water distributor, so that mud between bottom portion of groove and the first wall width be squeezed out, is formed in the bottom of the first wall width
Strong cement base bottom, while cement slurry also squeezes out the mud on the outside of wall width between groove, due to the gear of support plate bottom
Side is inserted into the soil of bottom portion of groove, to the mud between the inner wall of underground wall body and groove inner wall is isolated, water inlet pipe note
When entering high pressure water mud, cement slurry will not enter at the space of underground wall body inner wall and groove inner wall, to keep underground wall body
The flatness of inner wall.It is also filled with cement slurry in last mud drainage slot, water inlet pipe, so far, completes the construction of underground wall body.
In this construction method, wall width pours manufacture on the ground, and the own dimensions of wall width, flat shape precision are high；Groove-bottom
Portion is using only pile sinking, it is ensured that the horizontal position of underground wall body, vertical position precision are high；Gradually sunk using hoist cable synchronization, is sunk
When by soil pressure case, water inlet pipe adjust slurry resistance, so that it is guaranteed that synchronous, stable, the smooth sinking of wall width, effectively prevents
It is tilted in wall width sinking watching, it is ensured that the bottom of wall width is steadily contacted with only pile sinking, positions.Wall width, every preparation are manufactured on the ground
One piece of wall width sinks primary, and stable connection is reliable between adjacent two pieces of wall width, ne-leakage, the monoblock type finally formed in underground
Underground wall body structure；Entire construction process safety, the underground wall body quality formed after construction is high, intensity is high, precision is high, peace
It is complete reliable；This kind of underground wall body collection protecting wall, inwall and one, eliminate secondary construction, greatly shorten the construction period, reduce at
This.Cross section in the present embodiment is in that the underground wall body of rectangle is only by taking the underground wall body of this kind of structure as an example, not to underground
The restriction of wall cross-sectional shape can very easily construct not according to actual needs according to the construction method in the application
The underground wall body of similar shape, can be linear type underground wall body, square shape underground wall body, stud underground wall body, circularly under
Wall etc..
Except above-mentioned advantage, there is also following many details features in entire work progress: water inlet pipe is under wall width
High pressure water is injected during heavy, plays the role of dissipating solution, dilution mud, consequently facilitating the smooth sinking of wall；Underground wall body is completed
Water inlet pipe plays the role of reinforcing the connection of wall width later；Cement slurry is finally injected in water inlet pipe, it can be by bottom portion of groove and the first wall
Mud squeezes out between width, and then forms strong cement base in the first wall width bottom；The cement slurry being retained in water inlet pipe is solidifying
Gu the strength and stiffness of underground wall body are further enhanced after；Hoist cable plays pulling force effect during heavy wall, and final residue exists
In underground wall body, integral strength and rigidity can increase；Mud in groove plays the role of supporting groove side wall in groove, prevents
Only groove collapses, and in wall width sinking watching, mud provides support force (buoyancy) for wall width, thus greatly reduce loop wheel machine,
Mud can be automatically drained out in wall width sinking watching by the load of hoist cable by the gravity of wall width again.Entire work progress middle ring ring
It is engaged, makes the best use of everything, the generation that various aspects reduce construction cost, reduce engineering waste material.
Claims (8)
1. a kind of accurately descend wall construction method, characterized in that the following steps are included:
A, several only pile sinking of bottom portion of groove implantation in underground, only the top surface of pile sinking is coplanar；
B, several loop wheel machines are installed positioned at the top of groove on ground, support plate, support plate and every loop wheel machine is arranged in the top of groove
On hoist cable lower end fix；The end face center of support plate installs water distributor, and the downside of water distributor is equipped with several apopores, support
Plate is equipped with the through-hole to connect one to one with apopore, connects several vertical water inlet pipes, the bottom of support plate on water distributor
Equipped with several soil pressure cases corresponding with water inlet pipe, the inside lower end of support plate is equipped with rib；
C, the first wall width is poured the top surface concrete of support plate is laterally whole, tear open after the intensity of the first wall width reaches strength of mould stripping
Mould, the synchronous decline a distance of hoist cable, the first wall width sink down into it is concordant with ground, in the top surface of the first wall width concrete transverse direction
Whole to pour the second wall width, the demoulding after the intensity of the second wall width reaches strength of mould stripping is sunk down into the second wall width and ground by suspender
Face is concordant；And so on, if successively splicing dry wall width in the top surface of the second wall width, often pour integral sinking one after wall width
It is secondary, underground wall body is finally formed in groove；
D, after the first wall width sinks to bottom portion of groove, the cement slurry of high pressure is injected into water inlet pipe, cement slurry is arranged from water distributor
Out, so that mud between bottom portion of groove and the first wall width be squeezed out, strong cement base bottom is formed in the bottom of the first wall width, together
When cement slurry also the mud on the outside of wall width between groove is squeezed out, be also filled with cement slurry in final water inlet pipe.
2. according to claim 1 a kind of accurately descend wall construction method, characterized in that in step a, only pile sinking
The distance that top surface is higher by bottom portion of groove is 4cm-6cm.
3. a kind of wall construction method is accurately descended according to claim 1, characterized in that in step b, the branch
Fagging is steel plate, and the lower end of the rib is equipped with wedge-shaped cutting edge.
4. a kind of wall construction method is accurately descended according to claim 1, characterized in that between adjacent twice wall width
Equipped with sealing rod.
5. a kind of wall construction method is accurately descended according to claim 1, characterized in that in step c, the first wall width
Transverse direction whole pour that steps are as follows: steel reinforcement cage is installed in support plate top surface, template-setup in the two sides of steel reinforcement cage, two pieces of templates it
Between use the first wall of concreting width, the upper end of steel reinforcement cage is higher by the top surface of the first wall width, and hoist cable, water inlet pipe are embedded to the first wall
In width, the form removal after the first wall width reaches strength of mould stripping.
6. a kind of wall construction method is accurately descended according to claim 1, characterized in that in step c, every piece of wall width
Before sinking, the upper end of water inlet pipe connects high-pressure water pipe, in wall width sinking watching, sets when the pressure value of some soil pressure case is greater than
When definite value, water inlet pipe corresponding with the soil pressure case injects high pressure water, and then mud is dissipated solution, dilution, reduces resistance.
7. a kind of wall construction method is accurately descended according to claim 1, characterized in that the lateral surface of every piece of wall width
If being equipped with the vertical mud drainage slot in arterial highway, the mud drainage slot between adjacent two pieces of wall width is aligned connection.
8. a kind of wall construction method is accurately descended according to claim 1, characterized in that positioned at the wall of bottom of foundation ditch
Be equipped with supporting beam between the inner wall of width, supporting beam and corresponding wall width synchronize pour and be made, on ground with the corresponding position of supporting beam
Equipped with supporting beam escape groove.
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| CN201711471227.4A CN108104111B (en) | 2017-12-29 | 2017-12-29 | It is a kind of accurately to descend wall construction method |
Applications Claiming Priority (1)
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| CN201711471227.4A CN108104111B (en) | 2017-12-29 | 2017-12-29 | It is a kind of accurately to descend wall construction method |
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| CN108104111B true CN108104111B (en) | 2019-09-24 |
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|---|---|---|---|---|
| US3464665A (en) * | 1964-11-11 | 1969-09-02 | Tot Aanneming Van Werken Voorh | A template adapted for use in producing a concrete wall |
| CN104895093A (en) * | 2015-06-11 | 2015-09-09 | 东南大学 | Semi-prefabricated underground continuous wall and construction method thereof |
| CN105239577A (en) * | 2015-09-09 | 2016-01-13 | 冯克俊 | Method for carrying out settlement of underground wall structure by means of high-pressure water guns |
| CN205224016U (en) * | 2015-11-16 | 2016-05-11 | 上海市政工程设计研究总院（集团）有限公司 | Vertical mosaic structure of precast underground continuous wall |
| CN105887806A (en) * | 2016-06-13 | 2016-08-24 | 上海强劲地基工程股份有限公司 | Assembled type underground diaphragm wall and construction method thereof |
| CN107130585A (en) * | 2017-05-10 | 2017-09-05 | 广东省基础工程集团有限公司 | A kind of construction method of underground continuous wall |
-
2017
- 2017-12-29 CN CN201711471227.4A patent/CN108104111B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3464665A (en) * | 1964-11-11 | 1969-09-02 | Tot Aanneming Van Werken Voorh | A template adapted for use in producing a concrete wall |
| CN104895093A (en) * | 2015-06-11 | 2015-09-09 | 东南大学 | Semi-prefabricated underground continuous wall and construction method thereof |
| CN105239577A (en) * | 2015-09-09 | 2016-01-13 | 冯克俊 | Method for carrying out settlement of underground wall structure by means of high-pressure water guns |
| CN205224016U (en) * | 2015-11-16 | 2016-05-11 | 上海市政工程设计研究总院（集团）有限公司 | Vertical mosaic structure of precast underground continuous wall |
| CN105887806A (en) * | 2016-06-13 | 2016-08-24 | 上海强劲地基工程股份有限公司 | Assembled type underground diaphragm wall and construction method thereof |
| CN107130585A (en) * | 2017-05-10 | 2017-09-05 | 广东省基础工程集团有限公司 | A kind of construction method of underground continuous wall |
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| CN108104111A (en) | 2018-06-01 |
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