CN103469801A - Method for constructing foundation pit enclosure structure on basis of prefabricated ground walls - Google Patents
Method for constructing foundation pit enclosure structure on basis of prefabricated ground walls Download PDFInfo
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Abstract
The invention discloses a method for constructing a foundation pit enclosure structure on the basis of prefabricated ground walls. The method includes constructing guide walls; performing grooving construction; positioning section steel; hoisting the prefabricated ground walls; splicing the ground walls; pouring concrete into holes; grouting width gaps. The method is characterized in that the prefabricated ground walls are hoisted and arranged into grooves while being spliced in a contraction site, and are connected with one another to form an integral ground wall in place, the concrete is secondarily poured in the prefabricated walls, and the width gaps are grouted, so that the width of the formed foundation pit enclosure structure meets design requirement, water seepage on wall surfaces of the formed foundation pit enclosure structure is prevented, and the formed foundation pit enclosure structure is favorable for constructing a 'two-wall-integrated' permanent structure. The method has the advantages that construction difficulty due to uncertain factors in a construction procedure is reduced, the construction quality is improved, the construction period is shortened, the construction cost is saved, and the service life of underground engineering is guaranteed.
Description
Technical field
The invention belongs to technical field of building construction, specifically just relate to a kind of foundation pit enclosure structure job practices based on prefabricated ground wall, can improve construction safety and the construction quality of ground circummure protection structure, reduced difficulty of construction, saved construction cost.
Background technology
Along with the development of Metro Construction, base pit engineering not only quantity increases in recent years, and towards more greatly, darker future development.Due to be everlasting business district construction of base pit engineering, not only to guarantee the stability and safety of foundation ditch self, and will control the surface settlement of foundation ditch periphery, guarantee that the sedimentation on peripheral stratum does not have influence on the normal use of neighboring buildings pipeline and structure.Underground exterior-protected structure form commonly used has at present: diaphragm wall, castinplace pile, shaped steel Soil-cement Wall (as the stake of SMW engineering method, TRD engineering method diaphragm wall) etc.
Diaphragm wall so that in its construction, vibration is little, noise is low, the rigidity of body of wall is large, be applicable to multiple formation condition (so from weak alluvium to the ground on hard stratum, closely knit sandy gravel stratum, weak rock etc. can construct) etc. advantage in subway engineering and other deep-foundation pit engineerings, be widely used.Two stages have been experienced in the development of diaphragm wall at present, respectively to be " two walls unifications " whole force structure stage in the single sealing effect stage of going along with sb. to guard him and the superimposed circummure protection structure stage, because the ground wall is widely used in multiple different stratum, in work progress, to some geological conditionss, poor stratum also constantly exposes long-term insoluble quality " common fault " and technical barrier, as landslip of the sides of the trench, wall percolating water etc.
Two courses that the diaphragm wall development is experienced:
(1) single going along with sb. to guard him the sealing effect stage.
It is exactly that a kind of single sealing is gone along with sb. to guard him system that the composite wall generally adopted in work progress is at present gone along with sb. to guard him system, and composite wall refers between space enclosing structure and main body liner the waterproofing course separation layer is set, and with top, the base plate waterproofing of structure, forms the integral sealing form.
Combined type ground wall ubiquity problem in work progress has: the percolating water of 1 zero ground wall seam crossings; 2 zero due in the composite construction system, goes along with sb. to guard him the main body as pattern foundation pit supporting structure, is temporary structure, and or not as the part of agent structure, cost is relatively not high.
(2) the superimposed circummure protection structure stage is " two walls unifications " stage.
Superimposed wall system refers between space enclosing structure and main body liner the waterproofing course separation layer is not set, by utilizing the reinforcing bar connector to be connected after superimposed that both are considered as integral wall between space enclosing structure and liner agent structure, form the overall structure of " two walls unifications ", be a kind of technological progress aspect structure reasonable.Superposed type ground wall connected mode commonly used at present is " embedded bar connector method ", first process a connector, we are referred to as connector, the inner surface car has reverse screw thread, and the end reinforced also car of the end reinforced and underground construction internals in the diaphragm wall be connected has screw thread, when connector is tightened by certain direction, just both reinforcing bars can be coupled together.
The characteristics that self is arranged of " two wall unifications " superimposed wall, it shows:
1) advantage of " two wall unifications " superimposed wall:
The iterative structure formula is gone along with sb. to guard him system in view of composite construction can not be as the part of permanent structure, and infrastructure cost is higher, a kind of process of innovation and development.No matter superposition mode is from economically or stressed, the distortion of general structure, and waterproof, all be better than the composite wall structure, therefore underground deep foundation ditch ground circummure protection structure adopts getting more and more of superposed type ground wall construction.
2) problem that " two wall unifications " superimposed wall exists:
Because wall construction in ground is that the field fabrication reinforcing cage is installed connector, precision is controlled poor, affects end product quality.Show the installation ubiquity problem of reinforcing bar connector, as uneven as the location height, deflection and the silk tooth destroys, destroy connector etc. in the corrosion of silk tooth, concrete chisel removal process produces the quality of connection problem from the investigation result of site operation; And owing to being provided with the connector be connected with agent structure in a large number in the reinforcing cage of diaphragm wall, and the spacing of arranging is less, mostly be to concentrate on an aspect, concrete aggregate is difficult to be filled between two-layer connector, causes the concrete leakiness and to produce percolating water phenomenon comparatively general.Because superimposed work progress existing problems are more, to job execution troop, require high.
For above-mentioned " two wall unifications " connector connectivity problem, caused on-the-spot relevant expert's abundant attention, and taked corresponding technical improvements and applied for corresponding technical patent, as Chinese patent CN101058977, CN101058978, CN201027307, the control method of process has also been proposed.The quality that prior art is installed connector to a certain extent is significantly improved, and improves the quality of construction of diaphragm wall.But because process does not have the change of matter, it is still very high that the iterative structure engineering is controlled requirement to the operation technical ability link of unit in charge of construction, therefore, superimposed wall technique does not fundamentally solve the problem faced in the construction of diaphragm wall process, and the development of diaphragm wall still needs to find new solution thinking.
Summary of the invention
For existing underground foundation ditch ground circummure protection structure complicated construction technique, difficulty of construction is large, cost is high, the technological deficiency that infiltration is even caved in easily occurs, the invention provides a kind of foundation pit enclosure structure job practices based on prefabricated ground wall, underground foundation ditch ground circummure protection structure difficulty of construction is reduced, workmanship improves, construction costs reduces, and the duration shortens, and has solved the difficult problem in current underground foundation ditch ground circummure protection structure building course.
Technical scheme
In order to realize above-mentioned technical purpose, the present invention designs a kind of job practices of prefabricated ground wall He this ground circummure protection structure of batch production, it is characterized in that, it comprises following step:
(1) construction of guide wall, before continuous wall trench underground, should construct and lead wall, is mainly used in the location of diaphragm wall and prevents the cell wall landslide.
Lead wall and adopt monolithic reinforced concrete structure more, fabricated construction steel or prefabricated reinforced concrete is also arranged, can be for repeatedly;
(2) trenching construction, trenching construction, after construction of guide wall completes, just can carry out trenching construction, and grooving enters groove for prefabricated ground wall assembled and meets the space enclosing structure needs of constructing.
Trenching construction, with respect to the cast in situs construction technology generally adopted at present, has been simplified the operations such as clear hole, brush wall, lifting, and the phenomenon of trenching construction process collapse hole can reduce.Guaranteed to a certain extent the construction quality of ground wall.The key point of trenching construction is the control of the degree of depth of grooving;
(3) shaped steel location after the grooving operation completes, is inserted shaped steel by design pitch and is positioned in the groove section, and utilize insert shaped steel control hoisting prefabricated ground wall under hang position.
The location of prefabricated ground wall is the key link of construction, and whether location accurately the direct quality of impact ground wall construction, position error may cause ground wall percolating water, impact ground wall verticality, reach the integrally construction quality of wall.Therefore, after the grooving operation completes, adopt the shaped steel location of coupling.Employing spacing according to designing requirement in the grooving of ground wall is inserted shaped steel in advance, then utilizes the shaped steel location to hang in prefabricated ground wall.Utilize shaped steel not only to facilitate the location of lower floor's wall and the location of upper walls more easy to control;
(4) prefabricated ground wall lifting, utilize the shaped steel location in step 3, and guiding hangs in prefabricated ground wall in grooving along shaped steel.
When prefabricated ground wall is produced, reserved 4 lifting locating holes, utilize locating hole by the rotation of the screw rod on assembled fixed mount, heads in fixing hole, and it is ridden on guide groove temporarily, is convenient to the splicing of upper and lower prefabricated ground wall.And utilize channel-section steel to weld a mast-up, and prefabricated ground wall adopts the screw rod rotation to dock with mast-up, and wherein bolt connection and lifting location adopt same locating hole;
Before the lifting of prefabricated ground wall, be similar to the assembled of underground interval shield duct piece, paste the power transmission liner at the anchor ring of prefabricated ground wall and the vertical face of dry wall in advance, while preventing from splicing, concrete is damaged with concrete directly the contact, stressed even while making to splice up and down, and play certain water proof, the function of antiseepage.
(5) wall splicing, dock assembled formation one width ground wall by some prefabricated ground walls up and down by designing requirement;
Detailed process is: 1) prefabricated ground wall is sling, and the shaped steel axis of guide is aimed in hole, along shaped steel, transfers to installing rack, utilizes the fixing first joint wall of four set bolts on installing rack;
2) lifting prefabricated ground of second section wall, save by head that requirement is transferred and the wall alignment of prefabricated ground of first joint, utilize wearing the assembled second section of bolt and the head wall that saves land, after assembled completing, second section is closed under first joint continuation and hangs, make the second assembled fixing hole that saves land wall, be fixed on installing rack;
3) by above-mentioned joining method, some prefabricated ground walls are docked to assembling construction up and down by designing requirement, finally that view picture ground wall is fixing by the design elevation requirement, described prefabricated ground wall spacing 30～50mm between horizontal direction in grooving.
(6) concreting in hole: complete the ground wall assembled after, should carry out secondary grouting in the hole of prefabricated ground wall, shaped steel and prefabricated ground wall are integrated, raising integral rigidity, space at the bottom of substantial wall;
(7) width gap slip casting, utilize sleeve valve pipe slip casting method by the sleeve valve pipe slip casting within the walls of prefabricated ground, prevents the wall seam crossing infiltration of prefabricated ground, the space under fill up ground wall working face, globality, continuity and the uniformity of assurance ground wall.
What further, in described step 3, use is shaped steel.
Further, in described step 4, at the anchor ring of prefabricated ground wall and the vertical face of dry wall, paste the power transmission liner, while preventing from splicing, two prefabricated ground walls directly contact and breakage, stressed even while making to splice up and down, and play the effect of water proof, antiseepage.
Special precast ground wall for the above-mentioned foundation pit enclosure structure job practices based on prefabricated ground wall, it is characterized in that: it comprises ground wall body, described ground wall body is cube structure, described cube length sides one side is stretched out the tapered boss of platform, a symmetrical side falls in the tapered groove of platform, described boss is corresponding with groove topography, described cube vertically has secondary and builds concrete, cube is built on the body of wall between concrete and outer wall vertical direction at secondary and is evenly had bolt and dock assembled hole, described secondary is built vertical direction on the body of wall between concrete and outer wall and is embedded with some stiffener skeletons,
On the body wall of described body of wall, a side is embedded with connector;
Described secondary is built body of wall between concrete and outer wall and is positioned at boss one side and is provided with the sealing injected hole;
Described ground wall body sidewall is provided with assembled hole and lifting locating hole;
Having sleeve valve pipe injected hole on ground wall body sidewall corresponding to described sealing injected hole is in communication with the outside.
Further, wall body in described ground is that concreting is made.
Further, each at least 4 of described assembled hole and lifting locating holes, be evenly distributed on prefabricated ground wall body outer wall metope.
Beneficial effect
The present invention adopts prefabricated ground wall to carry out underground foundation pit enclosure structure construction, because prefabricated ground wall is the product of standardized production, reduced difficulty of construction, improved construction quality, shorten man-hour, saved construction cost, increased the safety of underground pit maintenance soil structure construction, the present invention is applied widely, makes diaphragm wall significantly reduced by the factor that geological conditions affects.
The accompanying drawing explanation
Accompanying drawing 1 is process chart of the present invention.
Accompanying drawing 2 is to lead wall structure schematic diagram in the present invention.
Accompanying drawing 3 is trenching construction step structural representations in the present invention.
Accompanying drawing 4 is Shaped Steel positioning step structural representations of the present invention.
Accompanying drawing 5 is hoisting prefabricated ground wall step structural representations in the present invention.
Accompanying drawing 6 be in the present invention wall splicing step structural representation.
Accompanying drawing 7 is concreting step structural representations in mesopore of the present invention.
Accompanying drawing 8 is half sleeve valve pipe slip casting step structural representations of the present invention.
Accompanying drawing 9 is top views of prefabricated ground wall in the present invention.
Accompanying drawing 10 is front views of prefabricated ground wall in the present invention.
Accompanying drawing 11 is right views of prefabricated ground wall in the present invention.
The specific embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
Embodiment
As shown in Figure 1, a kind of underground foundation ditch ground circummure protection structure job practices based on prefabricated ground wall, it comprises following step:
The first step, construction of guide wall, before continuous wall trench underground, should construct and lead wall, is mainly used in the location of diaphragm wall and prevents the cell wall landslide.The quality of leading the wall quality directly has influence on axis and the absolute altitude control of diaphragm wall, should accomplish well construction, guarantee width, glacing flatness and verticality accurately, lead wall and adopt monolithic reinforced concrete structure more, fabricated construction steel or prefabricated reinforced concrete is also arranged, can be for repeatedly; Concrete structure as shown in Figure 2.
Second step, trenching construction, after construction of guide wall completes, just can carry out trenching construction, and grooving enters groove for prefabricated ground porthole assembled and meets the space enclosing structure needs of constructing.Trenching construction, with respect to the cast in situs construction technology generally adopted at present, has been simplified operations such as emptying, brush wall, lifting, and the phenomenon of trenching construction process collapse hole can reduce.Guaranteed to a certain extent the construction quality of ground wall.The key point of trenching construction is the control of the degree of depth of grooving; Concrete structure as shown in Figure 3.
The 3rd step, shaped steel location after the grooving operation completes, is inserted shaped steel by design pitch and is positioned in the groove section, and utilize insert shaped steel control hoisting prefabricated ground wall under hang position.
The location of prefabricated ground wall is the key link of construction, and whether location accurately the direct quality of impact ground wall construction, position error may cause ground wall percolating water, impact ground wall verticality, reach the integrally construction quality of wall.Therefore, after the grooving operation completes, adopt the shaped steel location of coupling.Employing spacing according to designing requirement in the grooving of ground wall is inserted shaped steel in advance, then utilizes the shaped steel location to hang in prefabricated ground wall.Utilize shaped steel not only to facilitate the location of lower floor's wall and the location of upper walls more easy to control; Concrete structure as shown in Figure 4.
The 4th step, the lifting of prefabricated ground wall, utilize the shaped steel location in step 3, and guiding hangs in prefabricated ground wall in grooving along shaped steel.When prefabricated ground wall is produced, reserved 4 lifting locating holes, utilize locating hole by the rotation of the screw rod on assembled fixed mount, heads in fixing hole, and it is ridden on guide groove temporarily, is convenient to the splicing of upper and lower prefabricated ground wall.And utilize channel-section steel to weld a mast-up, and prefabricated ground wall adopts the screw rod rotation to dock with mast-up, and wherein bolt connection and lifting location adopt same locating hole;
Before the lifting of prefabricated ground wall, be similar to the assembled of underground interval shield duct piece, paste the power transmission liner at the anchor ring of prefabricated ground wall and the vertical face of dry wall in advance, while preventing from splicing, concrete is damaged with concrete directly the contact, stressed even while making to splice up and down, and play certain water proof, the function of antiseepage.Concrete structure as shown in Figure 5.
The 5th step, the splicing of ground wall, dock assembled formation one width ground wall by some prefabricated ground walls up and down by designing requirement;
Detailed process is: 1) prefabricated ground wall is sling, and the shaped steel axis of guide is aimed in hole, along shaped steel, transfers to installing rack, utilizes the fixing first joint wall of four set bolts on installing rack;
2) lifting prefabricated ground of second section wall, save by head that requirement is transferred and the wall alignment of prefabricated ground of first joint, utilize wearing the assembled second section of bolt and the head wall that saves land, after assembled completing, second section is closed under first joint continuation and hangs, make the second assembled fixing hole that saves land wall, be fixed on installing rack;
3) by above-mentioned joining method, some prefabricated ground walls are docked to assembling construction up and down by designing requirement, finally that view picture ground wall is fixing by the design elevation requirement, described prefabricated ground wall spacing 30～50mm between horizontal direction in grooving, concrete structure as shown in Figure 6.
The 6th step, concreting in hole, complete the ground wall assembled after, should carry out secondary grouting in the hole of prefabricated ground wall, shaped steel and prefabricated ground wall are integrated, raising integral rigidity, space at the bottom of substantial wall; Concrete structure as shown in Figure 7.
The 7th step, the slip casting of width gap, utilize sleeve valve pipe slip casting method by the sleeve valve pipe slip casting within the walls of prefabricated ground, prevents the wall seam crossing infiltration of prefabricated ground, the space under fill up ground wall working face, globality, continuity and the uniformity of assurance ground wall.Concrete structure as shown in Figure 8.
Wherein, as accompanying drawing 9, shown in 10 and 11, special precast ground wall for the above-mentioned foundation pit enclosure structure job practices based on prefabricated ground wall, the prefabricated ground wall that described concreting is made comprises ground wall body 1, described ground wall body 1 is cube structure, described cube length sides one side is stretched out the tapered boss 101 of platform, a symmetrical side falls in the tapered groove 102 of platform, described boss 101 is corresponding with groove 102 profiles, described cube vertically has secondary and builds concrete 103, cube is built on the body of wall 104 between concrete 103 and outer wall vertical direction at secondary and is evenly had bolt and dock assembled hole 105, described secondary is built vertical direction on the body of wall 104 between concrete 103 and outer wall and is embedded with some stiffener skeletons 106,
On the body wall of described body of wall 104, a side is embedded with connector 107;
Described secondary is built body of wall 104 between concrete 103 and outer wall and is positioned at boss 101 1 sides and is provided with sealing injected hole 108;
Described ground wall body 1 sidewall is provided with assembled hole 109 and lifting locating hole 1010;
Having sleeve valve pipe injected hole 108a on ground wall body 1 sidewall of described sealing injected hole 108 correspondences is in communication with the outside;
Respectively at least 4 of described assembled hole 109 and lifting locating holes 1010, be evenly distributed on prefabricated ground wall body 1 outer wall metope.
The present invention adopts prefabricated ground wall to carry out underground foundation pit enclosure structure construction, because prefabricated ground wall is the product of standardized production, has reduced difficulty of construction, improved construction quality, shorten man-hour, saved construction cost, increased the safety of underground pit maintenance soil structure construction.
The front, rear, left and right of mentioning in the present invention are relative position; it is not the absolute position at component place; invention which is intended to be protected is not limited only to the technical scheme that the present embodiment is mentioned, and the technical scheme that any the present invention of being subject to enlightens all falls into protection scope of the present invention.
Claims (7)
1. the foundation pit enclosure structure job practices based on prefabricated ground wall, is characterized in that, it comprises following step:
(1) construction of guide wall, before continuous wall trench underground, should construct and lead wall, is mainly used in the location of diaphragm wall and prevents the cell wall landslide;
(2) trenching construction, after construction of guide wall completes, just can carry out trenching construction, and grooving enters groove for prefabricated ground porthole assembled and meets the space enclosing structure needs of constructing;
(3) shaped steel location after the grooving operation completes, is inserted shaped steel by design pitch and is positioned in the groove section, and utilize insert shaped steel control hoisting prefabricated ground wall under hang position;
(4) prefabricated ground wall lifting, utilize the shaped steel location in step 3, and guiding hangs in prefabricated ground wall in grooving along shaped steel;
(5) wall splicing, dock assembled formation one width ground wall by some prefabricated ground walls up and down by designing requirement;
(6) concreting in hole, complete the ground wall assembled after, should carry out secondary grouting in the hole of prefabricated ground wall, shaped steel and prefabricated ground wall are integrated, raising integral rigidity, space at the bottom of substantial wall;
(7) width gap slip casting, utilize sleeve valve pipe slip casting method by the sleeve valve pipe slip casting within the walls of prefabricated ground, prevents the wall seam crossing infiltration of prefabricated ground, the space under fill up ground wall working face, globality, continuity and the uniformity of assurance ground wall.
2. a kind of foundation pit enclosure structure job practices based on prefabricated ground wall as claimed in claim 1 is characterized in that: what in described step (3), use is the shaped steel location.
3. a kind of foundation pit enclosure structure job practices based on prefabricated ground wall as claimed in claim 1, it is characterized in that: in described step (4), at prefabricated ground wall end face, paste the power transmission liner, while preventing from splicing, two prefabricated ground walls directly contact and breakage, while making to splice up and down stressed evenly, and play the effect of water proof, antiseepage.
4. a kind of foundation pit enclosure structure job practices based on prefabricated ground wall as claimed in claim 1, it is characterized in that: in described step (5), some prefabricated ground walls being docked to assembled process up and down by designing requirement is:
1) prefabricated ground wall is sling, and the shaped steel axis of guide is aimed in hole, along shaped steel, transfers to installing rack, utilizes the fixing first joint wall of four set bolts on installing rack;
2) lifting prefabricated ground of second section wall, save by head that requirement is transferred and the wall alignment of prefabricated ground of first joint, utilize wearing the assembled second section of bolt and the head wall that saves land, after assembled completing, second section is closed under first joint continuation and hangs, make the second assembled fixing hole that saves land wall, be fixed on installing rack;
3) by above-mentioned joining method, some prefabricated ground walls are docked to assembling construction up and down by designing requirement, finally that view picture ground wall is fixing by the design elevation requirement, described prefabricated ground wall spacing 30～50mm between horizontal direction in grooving.
5. as the special precast ground wall in above-mentioned a kind of foundation pit enclosure structure job practices based on prefabricated ground wall claimed in claim 1, it is characterized in that: it comprises ground wall body (1), described ground wall body (1) is cube structure, described cube length sides one side is stretched out the tapered boss of platform (101), a symmetrical side falls in the tapered groove of platform (102), described boss (101) is corresponding with groove (102) profile, described cube vertically has secondary and builds concrete (103), cube is positioned at secondary and builds the upper vertical direction of body of wall (104) between concrete (103) and outer wall and evenly have bolt and dock assembled hole (105), the upper vertical direction of body of wall (104) that described secondary is built between concrete (103) and outer wall is embedded with some stiffener skeletons (106),
On the body wall of described body of wall (104), a side is embedded with connector (107);
Described secondary is built body of wall (104) between concrete (103) and outer wall and is positioned at boss (101) one sides and is provided with sealing injected hole (108);
Described ground wall body (1) sidewall is provided with assembled hole (109) and lifting locating hole (1010);
Having sleeve valve pipe injected hole (108a) on ground wall body (1) sidewall of described sealing injected hole (108) correspondence is in communication with the outside.
6. the special precast ground wall in a kind of foundation pit enclosure structure job practices based on prefabricated ground wall as claimed in claim 5 is characterized in that: described ground wall body (1) is that concreting is made.
7. the special precast ground wall in a kind of foundation pit enclosure structure job practices based on prefabricated ground wall as claimed in claim 5, it is characterized in that: each at least 4 of described assembled hole (109) and lifting locating holes (1010) are evenly distributed on prefabricated ground wall body (1) outer wall metope.
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| CN104775439A (en) * | 2015-04-20 | 2015-07-15 | 中建南方投资有限公司 | Foundation pit support and water stop integrated structure and construction method thereof |
| CN105442614A (en) * | 2015-11-19 | 2016-03-30 | 浙江桐砚建筑规划设计有限公司 | Construction method for foundation pit support |
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| 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 |
| CN107956220A (en) * | 2017-11-23 | 2018-04-24 | 上海建科工程咨询有限公司 | A kind of prefabricated construction method for diaphragm walls based on TRD grooving |
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| CN104775439A (en) * | 2015-04-20 | 2015-07-15 | 中建南方投资有限公司 | Foundation pit support and water stop integrated structure and construction method thereof |
| CN104775439B (en) * | 2015-04-20 | 2017-03-15 | 中建南方投资有限公司 | A kind of pattern foundation pit supporting structure sealing integral structure and its construction method |
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| CN105862990A (en) * | 2016-03-24 | 2016-08-17 | 上海市机械施工集团有限公司 | Prefabricated assembly well wall structure and construction method thereof |
| 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 |
| CN107956220A (en) * | 2017-11-23 | 2018-04-24 | 上海建科工程咨询有限公司 | A kind of prefabricated construction method for diaphragm walls based on TRD grooving |
| CN109056703A (en) * | 2018-09-17 | 2018-12-21 | 中国铁路设计集团有限公司 | A kind of construction method of assembled underground continuous wall |
| CN109281313A (en) * | 2018-09-27 | 2019-01-29 | 广州地铁设计研究院股份有限公司 | A kind of Prefabricated composite box diaphram wall and its construction method |
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