CN114635453A - Construction process for post-cast strip variable cross-section prefabricated retaining plate - Google Patents
Construction process for post-cast strip variable cross-section prefabricated retaining plate Download PDFInfo
- Publication number
- CN114635453A CN114635453A CN202210184556.5A CN202210184556A CN114635453A CN 114635453 A CN114635453 A CN 114635453A CN 202210184556 A CN202210184556 A CN 202210184556A CN 114635453 A CN114635453 A CN 114635453A
- Authority
- CN
- China
- Prior art keywords
- plate
- post
- cast strip
- basement
- construction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010276 construction Methods 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000009434 installation Methods 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 239000002689 soil Substances 0.000 claims abstract description 18
- 230000002787 reinforcement Effects 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 238000012805 post-processing Methods 0.000 claims abstract description 4
- 239000004567 concrete Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 9
- 239000011083 cement mortar Substances 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000009415 formwork Methods 0.000 claims description 4
- 239000010985 leather Substances 0.000 claims description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 239000004568 cement Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000004575 stone Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/10—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against soil pressure or hydraulic pressure
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a construction process of a post-cast strip variable-section prefabricated retaining plate. The method comprises the following steps: 1. manufacturing a fold line plate; 2. pre-embedding; 3. mounting a plate; 4. post-processing; the step 1 specifically comprises: the division is determined according to the height of the basement, the thickness of the bottom plate and the position of the water stop steel plate; the embedded pipe is an electric pipe with the inner diameter of 20mm, and is bound and fixed with the main reinforcement. Before the basement wallboard post-cast strip (temperature zone and sedimentation zone) is sealed, the basement wallboard post-cast strip plays roles of retaining soil and preventing water (structural layer), can finish the backfilling and preventing water construction of the basement as early as possible, can increase the outdoor temporary working surface (road and yard), can build the ground external frame in time to reduce the workload of the cantilever frame, saves the construction cost and improves the working efficiency. Meanwhile, the functions of preventing the post-cast strip from stretching and settling cannot be influenced, and the on-site installation is also required to be facilitated.
Description
Technical Field
The invention relates to a construction process of a post-cast strip variable-section prefabricated retaining plate, in particular to a 'inner mold outer plate' retaining construction process of a post-cast strip of an underground chamber wall.
Background
The post-cast strip is a concrete strip reserved at the corresponding position of a foundation slab, a wall and a beam according to the design or construction specification requirement for preventing harmful cracks possibly generated by the uneven self shrinkage or the uneven settlement of the reinforced concrete structure. The post-cast strip is divided into a temperature zone for preventing the concrete from shrinking per se and a settlement zone for preventing uneven settlement, the retention time of the temperature zone is at least more than 42 days, and the post-cast strip also has two months according to the design specification requirement. The retention time of the settling zone is required to be completed when the main body is finished, the specification requires that the masonry is finished or the self weight of the structure is 70%, and the closed pouring can be carried out after 14 days or 28 days. The basement wallboard post-cast has two special, on one hand in the position, the front side is basement wall body, and the rear side is earthwork side slope or basement dado, and the centre is the handling frame, and the working face reaches it narrowly, is unfavorable for the machines operation. And secondly, the early-stage water resistance and soil retaining are required, the template function is realized during pouring, and certain requirements are provided for the structural strength.
In conclusion, the invention designs a novel construction process of the post-pouring belt variable cross-section prefabricated retaining plate.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a construction process of a post-cast strip variable-section prefabricated retaining plate, which saves the construction cost and improves the working efficiency. Meanwhile, the functions of preventing the post-cast strip from stretching and settling cannot be influenced, and the on-site installation is also required to be facilitated.
In order to achieve the purpose, the invention is realized by the following technical scheme: the post-cast strip variable cross-section prefabricated retaining plate construction process comprises the following steps:
1. manufacturing a fold line plate;
2. pre-embedding;
3. mounting a plate;
4. post-processing;
preferably, the step 1 specifically comprises: the division is determined according to the height of the basement, the thickness of the bottom plate and the position of the water stop steel plate; the embedded pipe is an electric pipe with the inner diameter of 20mm and is bound and fixed with the main bar; the steel bar adopts
Strength of fine stone concrete: C25.
the step 2 specifically comprises: the middle part of the broken line plate is connected with the template in a pulling way, and the standard plate is not embedded in advance;
the step 3 specifically comprises:
31. after the basement wallboard is completed and the form is removed, the maintenance time of the broken line board exceeds 15 days and reaches 75 percent of strength, and installation preparation is carried out; checking and cleaning the pre-buried condition before installation, and popping up a folding plate horizontal and vertical installation line on the outer wall of the basement; the inner side template is installed in place by using two side screw rods of the post-cast strip in advance by the height of one plate, a middle pull rod hole is opened according to an installation line, a middle screw rod is inserted, and the other end of the inner side template is temporarily bound and fixed on a post-cast strip steel bar; for convenient construction, no positioning piece is set at one side of the middle screw rod template, the size of the inner space is additionally controlled by a steel bar positioning rod with a water stop piece, the length and the thickness are the same as those of the screw rods;
32. the operation frame is shared with a basement outer wall waterproof operation frame, the inner space of the post-pouring zone is not smaller than 250mm, the operation frame is shared with a wall template operation frame, the positions of vertical rods and large mold rods are planned before erection, and the inner horizontal rod is hollow;
33. after the prefabricated fold line plate is subjected to drawing and cleaning, the prefabricated fold line plate is transported to an installation position, an installation hook and a rope are hung on two preformed holes to be in place, and the prefabricated fold line plate is manually placed down from the position where the wall plate and the operation frame are 250mm hollow; the position is at one side of the basement wallboard; because the construction of the main structure is difficult to operate, one side of the operation frame is replaced by a steel bar with the diameter of 6.5 mm; before the line folding plate is in place, the position of a laying point of a cast wall on the outer side of the post-cast strip is adhered with a polymer coiled material with the thickness not less than 3 and the width of 50, so that the laying flatness of the plate is improved, and the scalability is increased;
34. a one-hole one-hook one-rope one-person mode is adopted, one plate with two holes is directly put in place to the installation position, and a control plate on a special operating frame is arranged to be balanced and stably put in place on a cushion layer or a lower leather line folding plate in the lowering process; after the device is in place, the upper opening can be temporarily fixed with the side wall of the post-cast strip by a hoop;
35. the operator of the operation frame is responsible for pressing the wire folding plate after taking place, one side of the internal mold is responsible for installing the middle screw rod, aligning the hole of the wire folding plate and taking place the middle screw rod, and the operator of the operation frame is screwed up by the nut; the inner mold side personnel are responsible for screwing the inner mold side screw rod;
36. after all the line folding plates are installed in place, the spare part at the upper part of the post-cast strip is supported by the templates inside and outside.
Preferably, the step 4 specifically comprises:
before waterproof construction, the internal and external corner parts of the plate end and the plate bottom are made into circular arcs by cement mortar, and the embedded steel bar heads are buried; the height difference between the plates, the reserved holes of the side nuts of the middle screw plate and the peripheries of the embedded holes are leveled by cement mortar or cement paste, and coiled material construction is facilitated.
The edges of the backfilled soil plate are compacted in a split-skin mode, the inner sides of the steel bars are arranged on one side of the plate, and the lateral pressure of the concrete in the post-pouring belt in the later period is provided by the lateral pressure of the backfilled soil and the water pressure, which greatly exceeds the lateral pressure of the concrete construction, but is only formed by the passive soil pressure after deformation to a certain degree; therefore, besides the splitting and tamping, the vertical seams of the plates are paved with the high-split coiled materials at two sides;
after backfilling, the inner mold should be inspected again for screw tightening and possible deformation of the mold plate.
The invention has the beneficial effects that: before the basement wallboard post-cast strip (temperature zone and sedimentation zone) is closed, the basement wallboard post-cast strip plays a role of soil retaining and water preventing (structural layer), can finish the soil backfilling and water preventing construction of the basement as early as possible, can increase the outdoor temporary working surface (road and yard), can build the ground outer frame in time to reduce the workload of the cantilever frame, saves the construction cost and improves the working efficiency. Meanwhile, the functions of preventing the post-cast strip from stretching and settling cannot be influenced, and the on-site installation is also required to be facilitated.
Drawings
The invention is described in detail below with reference to the drawings and the detailed description;
FIG. 1a is a front view of a prefabricated panel form of the present invention;
FIG. 1b is a top view of the prefabricated panel formwork of the present invention;
FIG. 1c is a side view of a prefabricated panel form of the present invention;
FIG. 2a is a front view of the reinforcement of the present invention;
FIG. 2b is a top view of the reinforcement of the present invention;
FIG. 2c is a side view of the reinforcement of the present invention;
FIG. 3 is a view of the basement without external expanding legs (the dotted line in the figure is the adjusting rod);
FIG. 4 is a diagram of the basement with external expanding legs (e top plate, f pre-embedded short ribs, g threaded pull rod, h screw rod to be adjusted, i high-low side cover plate);
FIG. 5 is a diagram of the relationship of the post-cast strip handling frame of the present invention to the wall and associated handling frame;
FIG. 6 is a side view of the basement of the present invention;
FIG. 7 is a side shipping and installation view of the handling frame of the present invention;
FIG. 8 is a hook diagram of the present invention;
FIG. 9 is an installation view of the inner mold outer plate of the present invention (D, original structure screw tie; E inner mold support).
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Referring to fig. 1 to 9, the following technical solutions are adopted in the present embodiment: the post-cast strip variable cross-section prefabricated earth-retaining plate construction process comprises the following steps:
manufacturing of first and second fold line boards
1. The following steps are based on the 800-width post-cast strip, the width dimension is taken as a reference, and the division is specifically determined according to the height of the basement, the thickness of the bottom plate and the position of the water stop steel plate. The pre-buried pipe a is bound and fixed with the main bar by an electric pipe with the inner diameter of 20 mm. (core mold b on two sides of the embedded pipe a)
2. The reinforcement figures are shown in figure 2a, figure 2b and figure 2 c; and (4) steel bar recommendation:
strength of fine stone concrete: c25;
the four small circles shown in fig. 2a are bottom one-layer or two-layer plates, and it is possible to reserve a reserved hole for avoiding a horizontal water stop plate or when the bottom plate is higher than a standard plate, and the specific position should be comprehensively determined according to the thickness of the bottom plate, the position of the water stop plate and the like, see fig. 3 and 4.
Secondly, pre-embedding
The middle part of the broken line plate is connected with the template in a pulling way, and the standard plate is not embedded in advance. The possible special cases of the floor panels are classified as follows:
1. the bottom plate may conflict with the water stop steel plate B reserved by the basement bottom plate flanging concrete, and the following measures can be taken for adjustment:
1) enlarging the position of the two holes;
2) changing the two holes into one hole, and increasing the diameter of the screw;
3) increasing or decreasing the height of the standard plate;
2. the thickness of the bottom plate d is larger than that of the standard plate, the inner mold is not arranged inside the bottom plate d, the plate screw cannot be connected in a pulling mode, and the preformed hole is adjusted to two sides, and is welded with the upper rib at the bottom of the poured plate or the fixing rib (or is embedded independently) of the water stop plate as shown in figure 2. If the hole is left in the middle, the stay length of the pull rod is large, and the rigidity is reduced, which should be avoided.
3. The first leather plate at the bottom can be clamped and fixed by short steel bar heads pre-embedded in the cushion layer c (bottom plate d). The diameter of the reinforcing steel bar head is 6, the embedded section is not less than 100mm, the exposed part is more than 80mm, and the embedded position is 50mm away from the outer side plate end of the wall surface. The plate is bent after being in place, and the exposed section is clamped with the wire folding plate.
Third, the board installation
1. The basement wall board is completed and demoulded, the broken line board curing time exceeds 15 days and reaches 75 percent of strength, and the basement wall board can be installed and prepared. And (5) checking the pre-buried condition and cleaning before installation, and popping up a fold line plate horizontal and vertical installation line on the outer wall of the basement. The inner side template can be installed in place by utilizing the screws on two sides of the post-cast strip A in advance by one plate height, a middle pull rod hole is opened according to an installation line, a middle screw rod is inserted, and the other end of the inner side template is temporarily bound and fixed on a post-cast strip steel bar. For convenient construction, one side of the middle screw rod template is not provided with a positioning sheet, the size of the inner space is additionally controlled by a steel bar positioning rod with a water stop sheet, and the length, the thickness and the diameter of the middle screw rod template are the same as those of the screw rods. Such as jumper C in fig. 9.
2. The operation frame is used for the basement outer wall waterproof operation frame, but the space in the post-cast strip is not less than 250mm, as shown in figure 5. If the device is shared with a wall formwork handling frame, the positions of the upright rods and the large formwork rods, the inner horizontal rods and the like are planned before erection.
3. After the prefabricated fold line board is subjected to drawing and cleaning, the prefabricated fold line board is transported to a mounting position, the mounting hooks and the ropes are hung in place by utilizing two preformed holes, and the prefabricated fold line board is hollow in a 250mm range from the wall board and the operation frame and is manually placed. The optimal position is at the side of the basement wall board (figure 6), for example, the side of the operation frame is changed due to the difficult operation of main structure construction (support frame) and the like, as shown in figure 7. Fig. 8 is a schematic view of the mounting hook using a 6.5mm diameter rebar. Before the line folding plate is in place, a position of a laying point of the cast wall on the outer side of the post-cast strip is adhered with a polymer coiled material with the thickness of not less than 3 and the width of 50, so that the laying flatness (fitting) of the plate is improved, and the scalability is increased.
4. A one-hole one-hook one-person mode is adopted, one plate with two holes is directly put in place to the installation position, and a control plate on a special operating frame is arranged to be balanced and stably put in place on the cushion layer c or the lower leather line folding plate in the lowering process. After the device is in place, the upper opening can be temporarily fixed with the side wall of the post-cast strip by a hoop.
5. After the operator is in position, the operator is responsible for pressing the line folding plate, one side of the inner die is responsible for installing the middle screw, the middle screw F is in position by aligning the hole of the line folding, and the operator is screwed by a nut (with a gasket with the thickness of 4 and the side length or the diameter of 40). And the inner mold side personnel are responsible for screwing the inner mold side screw rod.
6. After all the line folding plates are installed in place, the spare part at the upper part of the post-cast strip is supported by the templates inside and outside.
Fourthly, post-processing
Before waterproof construction, cement mortar is needed to be made into arcs at the male and female corners of the plate ends, the plate bottoms and the like, and the embedded steel bar heads (embedded short bars f) are embedded at the same time. The height difference between the plates, the reserved holes of the side nuts of the middle screw plate and the peripheries of the embedded holes are leveled by applying cement mortar or cement paste, and the coiled material construction is facilitated.
The edges of the backfilled soil plate are compacted in a split-skin mode, and because reinforcing steel bars (inner sides) are placed on one side of the plate, the lateral pressure of the post-pouring belt concrete in the later period is mainly provided by the lateral pressure and the water pressure of the backfilled soil and greatly exceeds the lateral pressure of the concrete construction, but the deformation of the backfilled soil plate to a certain degree is only achieved by the passive soil pressure (the water pressure cannot be estimated). Therefore, in addition to splitting and tamping, the vertical seams of the plates should be paved with the coiled materials with high split at two sides.
After backfilling, the inner mold should be inspected again for screw tightening and possible deformation of the mold plate.
The concrete implementation mode aims at the waterproof requirement of construction, the outer side of the prefabricated plate needs to be flat, and the construction of waterproof coiled materials and coatings is facilitated. The strength of the soil has to be capable of resisting the soil pressure of about 4 meters (from the bottom of an underground chamber to the height of an outdoor terrace) and the water pressure of 3 meters, and the soil pressure is about more than 4 kn.m according to an active soil pressure calculation formula (compared with the conservation of limited backfill of clay backfill). The size and weight of the board must be controlled, so that the on-site manufacturing and the on-site installation are convenient. The characteristics of maximum middle bending moment and zero return of two sides of the simple support plate are utilized, and the outer side surface plate is made into a broken line type variable cross-section component so as to reduce the size of the cross section. The inner side of the artificial installation plate is hollowed to form a plate beam type, and the size width is divided according to the height of the basement and the thickness of the bottom plate, generally between 400 and 500 mm. The hole (water stopping) screw rod in the installation mode plate is connected with the main edge of the inner mold in a pulling mode to form a structural system of an outer (prefabricated) plate of the inner mold, and the pre-buried workload is reduced. The line folding plate is connected with the basement by the screw and the internal template, the post-cast basement wall is covered by the screw in a mode of clamping the poured basement wall, and the free expansion and settlement of concrete on two sides of the post-cast basement are not influenced.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The post-cast strip variable cross-section prefabricated retaining plate construction process is characterized by comprising the following steps of:
(1) manufacturing a fold line plate;
(2) pre-burying;
(3) mounting the board;
(4) performing post-processing;
the step (1) specifically comprises the following steps: the division is determined according to the height of the basement, the thickness of the bottom plate and the position of the water stop steel plate; the embedded pipe is an electric pipe with the inner diameter of 20mm and is bound and fixed with the main reinforcement; the reinforcing steel bar adopts
Strength of fine stone concrete: C25.
2. the construction process of the post-cast strip variable-section precast retaining plate according to claim 1, wherein the step (2) specifically comprises: the middle part of the broken line plate is connected with the template in a pulling way, and the standard plate is not embedded in advance.
3. The construction process of the post-cast strip variable-section precast retaining plate according to claim 1, wherein the step (3) specifically comprises:
(31) completing the basement wallboard, removing the formwork, maintaining the broken line board for more than 15 days to reach 75% strength, and performing installation preparation; checking the pre-buried condition and cleaning before installation, and popping up a folding plate horizontal and vertical installation line on the outer wall of the basement; the inner side template is installed in place by using two side screw rods of the post-cast strip in advance by the height of one plate, a middle pull rod hole is opened according to an installation line, a middle screw rod is inserted, and the other end of the inner side template is temporarily bound and fixed on a post-cast strip steel bar; for convenient construction, no positioning piece is set at one side of the middle screw rod template, the size of the inner space is additionally controlled by a steel bar positioning rod with a water stop piece, the length and the thickness are the same as those of the screw rods;
(32) the operation frame is shared with a basement outer wall waterproof operation frame, the inner space of the post-pouring zone is not less than 250mm, the operation frame is shared with a wall template operation frame, the positions of a vertical rod and a large mold rod are planned before erection, and the inner space of a horizontal rod is planned;
(33, after stripping and cleaning the prefabricated broken line plate, transporting the prefabricated broken line plate to an installation position, hanging an installation hook and a rope by using two reserved holes to be in place, manually putting down the prefabricated broken line plate from a position 250mm hollow between the wall plate and an operation frame, and placing the prefabricated broken line plate on one side of the wall plate of the basement, wherein the prefabricated broken line plate is difficult to operate in the construction of a main body structure, and is replaced to one side of the operation frame by using a steel bar with the diameter of 6.5 mm;
(34) adopting a one-hole one-hook one-person mode, directly positioning one plate with two holes to the installation position, and arranging a control plate on a special operating frame to balance and stably position the control plate on the cushion layer or the lower leather line folding plate in the lowering process; after the device is in place, the upper opening can be temporarily fixed with the side wall of the post-cast strip by a hoop;
(35) after the operator is in position, the operator is in charge of pressing the wire folding plate, one side of the inner die is in charge of installing the middle screw rod, aligning the hole of the wire folding plate to be in position, and the operator is screwed down by the nut; the inner mold side personnel are responsible for screwing the inner mold side screw rod;
(36) and after the fold line plates are all installed in place, supporting the internal and external templates at the spare part of the upper part of the post-cast strip.
4. The construction process of the post-cast strip variable-section precast retaining plate according to claim 1, wherein the step (4) specifically comprises:
before waterproof construction, the internal and external corner parts of the plate end and the plate bottom are made into circular arcs by cement mortar, and the embedded steel bar heads are buried; the height difference between the plates, the reserved holes of the side nuts of the middle screw plate and the peripheries of the embedded holes are leveled by cement mortar or cement paste, so that the coiled material construction is facilitated;
the edges of the backfilled soil plate are compacted in a split-skin mode, the inner sides of the steel bars are arranged on one side of the plate, and the lateral pressure of the concrete in the post-pouring belt in the later period is provided by the lateral pressure of the backfilled soil and the water pressure, which greatly exceeds the lateral pressure of the concrete construction, but is only formed by the passive soil pressure after deformation to a certain degree; therefore, besides the splitting and tamping, the vertical seams of the plates are paved with the high-split coiled materials at two sides;
after backfilling, the inner mold should be inspected again for screw tightening and possible deformation of the mold plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210184556.5A CN114635453A (en) | 2022-02-28 | 2022-02-28 | Construction process for post-cast strip variable cross-section prefabricated retaining plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210184556.5A CN114635453A (en) | 2022-02-28 | 2022-02-28 | Construction process for post-cast strip variable cross-section prefabricated retaining plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114635453A true CN114635453A (en) | 2022-06-17 |
Family
ID=81948330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210184556.5A Pending CN114635453A (en) | 2022-02-28 | 2022-02-28 | Construction process for post-cast strip variable cross-section prefabricated retaining plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114635453A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201280725Y (en) * | 2008-09-27 | 2009-07-29 | 中国建筑第五工程局有限公司 | Post-casting construction precast slab for basement of buildings |
| KR20110133207A (en) * | 2010-06-04 | 2011-12-12 | 이상헌 | Underpass using precast concrete pile and method for constructing the same |
| CN206279561U (en) * | 2016-12-12 | 2017-06-27 | 北京城建七建设工程有限公司 | A kind of poured band of outer wall of basement prefab-form system |
| CN207998875U (en) * | 2018-02-12 | 2018-10-23 | 中国一冶集团有限公司 | A kind of basement post-pouring zone prefabricated retaining wall |
| CN213979911U (en) * | 2020-11-07 | 2021-08-17 | 北京住总第一开发建设有限公司 | Basement outer wall post-cast strip template structure |
-
2022
- 2022-02-28 CN CN202210184556.5A patent/CN114635453A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201280725Y (en) * | 2008-09-27 | 2009-07-29 | 中国建筑第五工程局有限公司 | Post-casting construction precast slab for basement of buildings |
| KR20110133207A (en) * | 2010-06-04 | 2011-12-12 | 이상헌 | Underpass using precast concrete pile and method for constructing the same |
| CN206279561U (en) * | 2016-12-12 | 2017-06-27 | 北京城建七建设工程有限公司 | A kind of poured band of outer wall of basement prefab-form system |
| CN207998875U (en) * | 2018-02-12 | 2018-10-23 | 中国一冶集团有限公司 | A kind of basement post-pouring zone prefabricated retaining wall |
| CN213979911U (en) * | 2020-11-07 | 2021-08-17 | 北京住总第一开发建设有限公司 | Basement outer wall post-cast strip template structure |
Non-Patent Citations (2)
| Title |
|---|
| 刘余德;: "地下室外墙后浇带预制板封挡施工方法探析", 安徽建筑, no. 08 * |
| 邰冶;闻照峰;刘帅;: "地下室后浇带预制超前止水板施工技术", 施工技术, no. 2 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107059920B (en) | Loess formation piping lane construction technology | |
| CN108005387B (en) | Synchronous construction method for cast-in-place main body of assembled wallboard and short-limb shear wall | |
| CN206971270U (en) | Exterior wall formwork system in underground pipe gallery cast-in-place construction | |
| CN112647537A (en) | Pipe gallery construction process | |
| CN103806647A (en) | Assembly and disassembly process for large-span concrete bidirectional dense rib beam formwork case | |
| CN108755972B (en) | Foot pad for prefabricated part and using method thereof | |
| CN111058631B (en) | Concrete construction method for large-gradient inclined roof | |
| CN112112295A (en) | Reinforcing construction method for post-cast strip of post-sealed outer wall | |
| CN108951840A (en) | Based on setting bracket single side formwork basement arc external wall construction method | |
| WO2020244268A1 (en) | Variable cross-section pipe gallery structure suitable for rapid construction and construction method therefor | |
| CN210263131U (en) | Assembled is from stagnant water underground pipe gallery structure | |
| CN109797969B (en) | Construction method of post-cast strip tool type advanced formwork lifting system | |
| CN114164977A (en) | Method for combining construction of aluminum template and laminated slab | |
| CN111074950A (en) | Pre-closed advanced water stop post-cast strip for basement outer wall and construction method | |
| CN114575593A (en) | Adjustable plate buckling formwork support frame for super-load small-clearance beam and construction method thereof | |
| CN207944339U (en) | A kind of prefabricated superposed type anti-collision wall for urban viaduct | |
| CN114059585A (en) | Construction method of unilateral aluminum mould of subway side wall tripod | |
| CN109881699B (en) | Method for molding and installing concrete tire of assembled tongue-and-groove Miller type universal raft foundation | |
| CN204753834U (en) | Partition plate of scissors stair and connection structure of floor roof beam | |
| CN114809000B (en) | Rapid construction method of prefabricated plate brick moulding bed | |
| CN114635453A (en) | Construction process for post-cast strip variable cross-section prefabricated retaining plate | |
| CN113775174A (en) | Construction method for reinforcing underground external wall formwork of complex limited space in foundation pit | |
| CN207525964U (en) | A kind of prefabricated composite wallboard pitched roof system | |
| CN221589693U (en) | Once pouring template supporting and forming structure of ground well | |
| CN110185254A (en) | A kind of Combined aluminum alloy template system and its application method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |