CN108086302B - A kind of transverse direction based on underground wall body construction is whole to pour wall width subsidence process - Google Patents
A kind of transverse direction based on underground wall body construction is whole to pour wall width subsidence process Download PDFInfo
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- CN108086302B CN108086302B CN201711472554.1A CN201711472554A CN108086302B CN 108086302 B CN108086302 B CN 108086302B CN 201711472554 A CN201711472554 A CN 201711472554A CN 108086302 B CN108086302 B CN 108086302B
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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
- E02D5/20—Bulkheads or similar walls made of prefabricated parts and concrete, including reinforced concrete, in situ
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/0021—Mortar
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The present invention relates to underground construction technology fields, it discloses a kind of transverse direction based on underground wall body construction and whole pours wall width subsidence process, the following steps are included: a, several loop wheel machines are installed positioned at the top of groove on the ground, support plate is arranged in the top of groove, support plate and the lower end of the hoist cable on every loop wheel machine are fixed, the bottom surface of groove is equipped with several soil pressure cases, the end face center of support plate installs water distributor, the downside of water distributor is equipped with several equally distributed apopores, support plate is equipped with the through-hole to connect one to one with apopore, several vertical water inlet pipes are connected on water distributor；B, wall width is poured the top surface concrete of support plate is laterally whole, the demoulding after the intensity of wall width reaches strength of mould stripping；C, the upper end of every water inlet pipe connects high-pressure water pipe, controls the synchronous decline of hoist cable of all loop wheel machines, until the top surface decline of wall width is concordant as ground.Underground wall body quality made from the technique is high, ne-leakage, removes secondary construction from, greatly reduces construction cost, effectively shortens the construction period.
Description
Technical field
The present invention relates to underground construction technology fields more particularly to a kind of transverse direction based on underground wall body construction whole to pour wall width
Subsidence process.
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.
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 are difficult to control
System, 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,
Bond stress reduces, and wall quality can reduce, the random infiltration of Yi Yinqi metope, and metope is coarse, and some areas reinforcing bar is direct
It exposes, and there is also folder mud phenomenon, need to be arranged water-resistant liner wall；(4) built-in fitting is accurately positioned difficult, and underground connects
Continuous 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 provides a kind of cross based on underground wall body construction to solve the above-mentioned problems in the prior art
Wall width subsidence process is poured to whole, this kind of technique can ensure that transverse direction is whole on the ground and pour the smooth sinking of wall, final underground obtained
Wall quality is high, precision is high, barrier performance is good, degree of safety is high, and without additional setting inwall, entire engineering cost is low,
Short time limit.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of transverse direction based on underground wall body construction is whole to pour wall width subsidence process, comprising the following steps: a, on the ground position
Several loop wheel machines are installed in the top of groove, support plate, the lower end of support plate and the hoist cable on every loop wheel machine is arranged in the top of groove
Fixed, the bottom surface of support plate is equipped with several soil pressure cases, and the end face center of support plate installs water distributor, the downside of water distributor
Equipped with several equally distributed apopores, support plate is equipped with the through-hole to connect one to one with apopore, connects on water distributor
Several vertical water inlet pipes；B, wall width is poured the top surface concrete of support plate is laterally whole, it is strong that the intensity to wall width reaches demoulding
Demoulding after degree；C, the upper end of every water inlet pipe connects high-pressure water pipe, controls the synchronous decline of hoist cable of all loop wheel machines, until wall width
Top surface decline is concordant as ground；Wall width is during decline, when the pressure value of some soil pressure case is greater than the set value, with
The corresponding water inlet pipe of the soil pressure case injects high pressure water.
Preferably, before step a, in several only pile sinking of bottom portion of groove implantation, only the top surface of pile sinking is coplanar, only pile sinking
The distance that top surface is higher by bottom portion of groove is 4cm-6cm.
Preferably, support plate is steel plate in step a, the bottom surface of support plate is equipped with several cavitys, the soil pressure sensing
Device is mounted in cavity.
Preferably, installing steel reinforcement cage in support plate top surface, template-setup is in the two sides of steel reinforcement cage, at two pieces in step b
Concreting wall width is used between template, the upper end of steel reinforcement cage is higher by the top surface of wall width, and hoist cable, water inlet pipe are embedded in wall width,
The form removal after wall width reaches strength of mould stripping.
Preferably, be embedded with sealing rod in the top surface of wall width, in the half embedment wall width of sealing rod, sealing rod it is another
Half exposes outside wall width.
Preferably, the supporting beam escape groove of several groove connections is outputed by groover on the ground before step a；
In stepb, pour several supporting beams while pouring wall width with concrete is whole between the inner wall of wall width, the position of supporting beam with
Supporting beam escape groove corresponds.
Therefore, the invention has the following advantages:
(1) wall width is prepared on the ground, and the construction of wall width is easily manufactured, and work progress is quality controllable, overall structure stabilization, matter
Amount is high.
(2) bottom portion of groove is sunk after manufacturing on the ground using pile sinking, wall width is stopped, wall width own dimensions, flat shape, vertical position
It is very high to set precision.
(3) wall width is laterally whole pours, and integral strength, rigidity are high, after compressive property.
(4) wall width is prepared on the ground, avoids the casting concrete in mud, and requirement when wall width sinks to mud is aobvious
Writing reduces, and compared with the prior art, reduces the deployment cost and mud subsequent treatment cost of mud.
(5) can according to need between the inner wall of same wall width and supporting beam be freely set, especially can bottom of foundation ditch with
Under preset supporting beam, foundation pit in bottom of foundation ditch forms support system (and bases such as current campshed wall, ground-connecting-wall after digging
Supporting beam can not be preset when the protection works construction of hole, after can only digging in foundation pit and then continuing lower digging a certain distance
Supporting beam could be set), to enhance the compressive property of wall width, engineering safety degree is significantly improved.
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 wall width.
Fig. 4 is after first piece of wall width sinks, prepares second piece of wall width schematic diagram.
Fig. 5 is the top view of wall width.
Fig. 6 is the side connection schematic diagram of adjacent 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, mud 30, supporting beam escape groove 4, only pile sinking 5, loop wheel machine 6, hoist cable
60, support plate 7, cavity 70, through-hole 71, soil pressure case 8, water distributor 9, water inlet pipe 10, steel reinforcement cage 11, template 12, wall 13,
Sealing rod 14, supporting beam 15, blowoff chamber 16.
Specific embodiment
Present invention will be further described below with reference to the accompanying drawings and specific embodiments:
A kind of underground wall body construction method as depicted in figs. 1 and 2, comprising the following steps: with groover along groove tracks
Mark opens up the mud guide groove 1 that depth is H1, width is D, leads wall 2 with concreting, will lead wall and is mounted on mud guide groove
Two sides；The groove 3 for being H apart from ground predetermined depth, mud guide groove are opened up in the bottom of mud guide groove by groover
Depth H 1 and the ratio between predetermined depth H be 0.07-0.15, in the present embodiment for the Back Word connected in star shown in Fig. 1；Fluting
While machine outputs groove, the supporting beam escape groove 4 being connected to groove inner wall with recess width direction is also outputed；In groove
Prepare the mud 30 that density is ρ, ρ 1.4g/cm3-1.7g/cm3；In the bottom of groove 3, supporting beam escape groove 4, implantation is several only
Pile sinking 5, only the top surface of pile sinking is coplanar, and it is 4cm-6cm that only the top surface of pile sinking, which is higher by the distance of bottom portion of groove, then carries out laterally whole
It pours wall width and wall width sinks.
As shown in figure 3, laterally it is whole pour wall width subsidence process the following steps are included: a, on the ground positioned at groove top pacify
Several loop wheel machines 6 are filled, support plate 7 is arranged in the top of groove, and support plate and the lower end of the hoist cable 60 on every loop wheel machine are fixed, support plate
Bottom surface for steel plate, support plate is equipped with several cavitys 70, and soil pressure case 8 is mounted in cavity, the end face center peace of support plate
Water distributor 9 is filled, the downside of water distributor is equipped with several equally distributed apopores, and support plate is equipped with to be corresponded with apopore
The through-hole 71 of connection connects several vertical water inlet pipes 10 on water distributor；B, steel reinforcement cage 11, template 12 are installed in support plate top surface
The two sides of steel reinforcement cage are set, concreting wall 13 are used between two pieces of templates, the upper end of steel reinforcement cage is higher by the top of wall width
Face, hoist cable, water inlet pipe are embedded in wall width, and the form removal after wall width reaches strength of mould stripping is embedded with only in the top surface of wall width
The half of water bar 14, sealing rod is embedded in wall width, and the other half of sealing rod exposes outside wall width, while pouring wall width with concrete is whole
Several supporting beams 15 are poured between the inner wall of wall width, the position of supporting beam and supporting beam escape groove correspond；C, every into
The upper end of water pipe connects high-pressure water pipe, the synchronous decline of hoist cable of all loop wheel machines is controlled, until the top surface of wall width drops to and ground
Concordantly, wall width is during decline, corresponding with the soil pressure case when the pressure value of some soil pressure case is greater than the set value
Water inlet pipe inject high pressure water, until corresponding high-pressure water pipe stops note after the pressure value of the soil pressure case is less than setting value
Water；In order to reduce wall width penetration resistance, blowoff chamber 16 can be opened up in the two sides of groove, be discharged convenient for mud, it is ensured that first piece
The smooth sinking of wall.
As shown in Figure 4, Figure 5 and Figure 6, laterally whole second piece of wall then is poured in the same way in the top surface of first piece of wall width
Width is docked between first piece of wall width and second piece of wall width by steel reinforcement cage, and seam crossing is sealed by sealing rod 14, then by second
Block wall width drop to it is concordant with ground, as shown in fig. 7, foundation depth is H2, when first piece of wall width sinks, supporting beam 15 with
Wall width sink together, and so on, realize third block wall width, the transverse direction of the 4th piece of wall width whole poured, sinks；It is heavy to the first wall width
To after bottom portion of groove, hoist cable is separated with loop wheel machine, and the cement slurry of high pressure is injected into water inlet pipe, and cement slurry is arranged from water distributor
Out, so that mud between bottom portion of groove and first piece of wall width be squeezed out, strong cement base is formed in the bottom of first piece of wall width
Bottom, water inlet pipe is interior to be full of cement slurry.So far, the construction of underground wall body is completed, is then dug in the space inside underground wall body again
Foundation pit is dug, after foundation pit is dug, bottom of foundation ditch support system is formed by several supporting beams at bottom of foundation ditch, without continuing lower digging
Supporting beam is additionally set afterwards.
In this construction method, wall width is manufactured on the ground, and one piece of wall width of every preparation sinks primary, between adjacent two pieces of wall width
Stable connection is reliable, ne-leakage, and wall is quality controllable, finally integrally descends wall body structure what underground was formed；Entire engineering
Work progress safety, the underground wall body quality formed after construction is high, intensity is high, precision is high, securely and reliably；This kind of underground wall body collection
Protecting wall, inwall and one eliminate secondary construction, greatly shorten the construction period, reduce cost.In the present embodiment, groove
Demarcate depth H, depth H 1, the width D of mud guide groove, depending on these are required all in accordance with Specific construction；According to actual needs may be used
Very easily to construct underground wall body of different shapes, with can be linear type underground wall body, arc underground wall body, square shape
Lower wall, stud underground wall body etc..
Claims (6)
1. a kind of transverse direction based on underground wall body construction is whole to pour wall width subsidence process, characterized in that the following steps are included:
A, several loop wheel machines are installed positioned at the top of groove on the ground, support plate is arranged in the top of groove, and support plate is hung with every
The lower end of hoist cable on machine is fixed, and the bottom surface of support plate is equipped with several soil pressure cases, and the end face center of support plate installs water distribution
Pipe, the downside of water distributor be equipped with several equally distributed apopores, and support plate is equipped with to connect one to one with apopore
Through-hole connects several vertical water inlet pipes on water distributor；
B, wall width is poured the top surface concrete of support plate is laterally whole, the demoulding after the intensity of wall width reaches strength of mould stripping；
C, the upper end of every water inlet pipe connects high-pressure water pipe, the synchronous decline of hoist cable of all loop wheel machines is controlled, until the top surface of wall width
It drops to concordant with ground；Wall width is during decline, when the pressure value of some soil pressure case is greater than the set value, with the soil
The corresponding water inlet pipe of pressure sensor injects high pressure water.
2. a kind of transverse direction based on underground wall body construction according to claim 1 is whole to pour wall width subsidence process, characterized in that
Before step a, in several only pile sinking of bottom portion of groove implantation, the top surface of each only pile sinking is coplanar, and only the top surface of pile sinking is higher by recessed
The distance of trench bottom is 4cm-6cm.
3. a kind of transverse direction based on underground wall body construction according to claim 1 is whole to pour wall width subsidence process, characterized in that
In step a, support plate is steel plate, and the bottom surface of support plate is equipped with several cavitys, and the soil pressure case is mounted in cavity.
4. a kind of transverse direction based on underground wall body construction according to claim 1 is whole to pour wall width subsidence process, characterized in that
In step b, steel reinforcement cage is installed in support plate top surface, template-setup uses concrete between two pieces of templates in the two sides of steel reinforcement cage
Walling width is poured, the upper end of steel reinforcement cage is higher by the top surface of wall width, and hoist cable, water inlet pipe are embedded in wall width, and it is strong to reach demoulding to wall width
Form removal after degree.
5. a kind of transverse direction based on underground wall body construction according to claim 4 is whole to pour wall width subsidence process, characterized in that
It is embedded with sealing rod in the top surface of wall width, the half of sealing rod is embedded in wall width, and the other half of sealing rod exposes outside wall width.
6. a kind of transverse direction based on underground wall body construction according to claim 1 is whole to pour wall width subsidence process, characterized in that
Before step a, the supporting beam escape groove of several groove connections is outputed by groover on the ground；In stepb, concrete is used
Whole to pour several supporting beams while pour wall width between the inner wall of wall width, the position of supporting beam and supporting beam escape groove one are a pair of
It answers.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711472554.1A CN108086302B (en) | 2017-12-29 | 2017-12-29 | A kind of transverse direction based on underground wall body construction is whole to pour wall width subsidence process |
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| CN201711472554.1A CN108086302B (en) | 2017-12-29 | 2017-12-29 | A kind of transverse direction based on underground wall body construction is whole to pour wall width subsidence process |
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| CN108086302B true CN108086302B (en) | 2019-06-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109898520B (en) * | 2019-04-04 | 2022-03-01 | 问延煦 | Wall-sinking construction method |
| CN111549762B (en) * | 2020-04-24 | 2021-07-20 | 中国建筑股份有限公司 | Construction method of continuous wall collapse-preventing pouring template suitable for soft soil area |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1258785A (en) * | 1998-12-28 | 2000-07-05 | 石午江 | Construction method and equipment for continuous underground wall |
| CN1306130A (en) * | 2000-01-14 | 2001-08-01 | 许琦 | Technology for building continuous underground wall of dual-layer wall by stirring and deposition |
| CN101608551A (en) * | 2009-06-15 | 2009-12-23 | 广东华隧建设股份有限公司 | The job practices of a kind of shield machine closed origin and arrival |
| CN103195050A (en) * | 2013-04-25 | 2013-07-10 | 福州市第三建筑工程公司 | Tube-jet combined pile supporting underground wall structure and construction method for same |
| CN104153347A (en) * | 2014-08-29 | 2014-11-19 | 上海建工七建集团有限公司 | Repair structure of underground diaphragm wall panel notch and construction method of repair structure |
| CN105089044A (en) * | 2015-08-31 | 2015-11-25 | 中国建筑股份有限公司 | Horizontal push compaction type prefabricated underground continuous wall system 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 |
| 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 |
-
2017
- 2017-12-29 CN CN201711472554.1A patent/CN108086302B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1258785A (en) * | 1998-12-28 | 2000-07-05 | 石午江 | Construction method and equipment for continuous underground wall |
| CN1306130A (en) * | 2000-01-14 | 2001-08-01 | 许琦 | Technology for building continuous underground wall of dual-layer wall by stirring and deposition |
| CN101608551A (en) * | 2009-06-15 | 2009-12-23 | 广东华隧建设股份有限公司 | The job practices of a kind of shield machine closed origin and arrival |
| CN103195050A (en) * | 2013-04-25 | 2013-07-10 | 福州市第三建筑工程公司 | Tube-jet combined pile supporting underground wall structure and construction method for same |
| CN104153347A (en) * | 2014-08-29 | 2014-11-19 | 上海建工七建集团有限公司 | Repair structure of underground diaphragm wall panel notch and construction method of repair structure |
| CN105089044A (en) * | 2015-08-31 | 2015-11-25 | 中国建筑股份有限公司 | Horizontal push compaction type prefabricated underground continuous wall system 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 |
| 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 |
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