CN110450279B - Dry dock system for pouring full-section precast concrete and arrangement method - Google Patents
Dry dock system for pouring full-section precast concrete and arrangement method Download PDFInfo
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- CN110450279B CN110450279B CN201910745791.3A CN201910745791A CN110450279B CN 110450279 B CN110450279 B CN 110450279B CN 201910745791 A CN201910745791 A CN 201910745791A CN 110450279 B CN110450279 B CN 110450279B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
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- 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
- E02D29/063—Tunnels submerged into, or built in, open water
- E02D29/073—Tunnels or shuttering therefor assembled from sections individually sunk onto, or laid on, the water-bed, e.g. in a preformed trench
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
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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
- E02D2300/002—Concrete
Abstract
The invention relates to the technical field of immersed tube tunnel construction, in particular to a dry dock system for pouring full-section precast concrete, which solves the problem that the existing dock bottom structure cannot meet the requirement of template support by arranging an immersed tube precast yard bottom plate structure for prefabricating an immersed tube, wherein the immersed tube precast yard bottom plate structure is provided with a reaction groove and a first foundation, the reaction groove is used for arranging a reaction part connected with the lower part of an outer template, the reaction groove can support the lateral acting force applied to the lower part of the outer template during pouring by arranging the reaction part connected with the lower part of the outer template during use through reserving the reaction groove, the first foundation is used for arranging a connecting piece connected with the middle part of the outer template, and the first foundation can support the lateral acting force applied to the middle part of the outer template during pouring by connecting the connecting piece arranged in the middle part of the outer template during use through arranging the first foundation, lateral supporting force is provided for the middle part and the lower part of the outer side template through the arrangement of the first foundation and the reaction force groove.
Description
Technical Field
The invention relates to the technical field of immersed tube tunnel construction, in particular to a dry dock system for pouring full-section precast concrete and a dock bottom arrangement method for pouring the full-section precast concrete.
Background
At present, the precast concrete for immersed tubes is poured by adopting the layered and segmented precast concrete, but the concrete immersed tubes manufactured by the pouring method are easy to generate cracks in layering, and the cracks can be further expanded and extended in the long-term use process, so that a novel pouring process technology of the full-section precast concrete pouring is newly developed in the industry.
The immersed tube full-section precast concrete pouring is only applied to a few immersed tube tunnel projects at present, but because a very large stress field exists when the full-section precast concrete is adopted, the one-time poured concrete can generate acting force which is enough for deformation on a template, when the immersed tube full-section precast concrete pouring scheme is adopted, a template structure needs to be supported, but a support member of a common mechanical mechanism cannot effectively support the template structure, and the displacement of the template structure often occurs to influence the immersed tube pouring precision. In the prior art, a concrete wall is poured and manufactured to serve as a support counterforce wall for supporting a formwork structure to form a support mode. However, the use of concrete walls as the outer formwork support structure has the following disadvantages:
1. the construction period for pouring and manufacturing the concrete wall is long, so that the overall construction progress is influenced;
2. the poured concrete wall is used as a supporting counterforce wall, and the concrete wall has large structure volume and high material consumption, so the material cost and the labor cost are high;
3. after the concrete wall is poured, the concrete wall cannot move, and the immersed tube templates are installed with deviation, so that the concrete wall cannot form effective support for the outer side templates, and therefore the effective support can be realized only by auxiliary equipment or template position adjustment;
4. the pouring concrete wall is used as a supporting counterforce wall, the occupied area is large, and after the concrete wall supports the outer side template, no gap exists between the concrete wall and the outer side template, so that a walking channel and a construction space cannot be arranged.
In summary, on the one hand, the concrete wall is used as the counterforce support, but the support structure alone is difficult to effectively support the external formwork, and the full-section precast concrete construction process with excellent effect cannot be implemented, so how to realize the support structure to the formwork support is a great problem in the full-section precast concrete pouring process on the premise of not using the concrete wall as the support counterforce wall.
Disclosure of Invention
The invention aims to: the problem that an ordinary supporting structure cannot effectively support the formwork and cannot adopt a full-section precast concrete pouring process in the process of pouring immersed tube concrete is solved, and the dry dock system for pouring the full-section precast concrete is provided.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides a dry depressed place system for pouring full section precast concrete, is including the immersed tube precast yard bottom plate structure that is used for prefabricating immersed tube, immersed tube precast yard bottom plate is structural to be provided with reaction groove and first basis, the reaction groove is used for setting up the counter-force piece of connecting outside template lower part, first basis is used for setting up the connecting piece of connecting outside template middle part.
The pipe sinking prefabrication field bottom plate structure is used for prefabricating a sinking pipe, the pipe prefabrication field bottom plate structure is provided with a counter-force groove and a first foundation, the counter-force groove is used for arranging a counter-force piece connected with the lower part of the outer side template, and the counter-force groove is reserved and is used for supporting the lateral acting force applied to the lower part of the outer side template during pouring by arranging the counter-force piece connected with the lower part of the outer side template during use, so that the lower part of the outer side template is prevented from being deformed due to the lateral force of concrete, the support of the outer side template is prevented from collapsing due to the lateral force of the concrete, and;
the first foundation is used for arranging a connecting piece connected with the middle part of the outer side template, the first foundation is arranged, when in use, the connecting piece arranged at the middle part of the outer side template is connected, so that the first foundation can support the middle part of the outer side template under the lateral acting force when in pouring, the middle part of the outer side template is prevented from deforming due to the lateral force of concrete, the support of the outer side template is prevented from collapsing due to the lateral force of concrete, after the connecting piece used for connecting the middle part of the outer side template and the counter-force piece connected with the lower part of the outer side template are arranged, the upper part of the outer side template is provided with a pull frame to pull and support the outer side templates at two sides of the inner template, namely the support of the outer side template is completed, therefore, the first foundation and the counter-force groove are arranged in the dry dock system for transformation, so that, the connecting piece and the counter-force piece are greatly different from the existing concrete poured and used on the full section;
firstly, the support formed by pouring the concrete wall can be used only when the strength of the concrete reaches the designed strength, and the member support is supported by adopting the connecting piece and the counter-force piece, and can be immediately put into use by depending on the dry dock system, so that the construction period for manufacturing the concrete wall is shortened, and the whole construction period is shortened; secondly, a concrete wall is poured to serve as a support, because the concrete wall is large in structure size and high in material loss, a set of concrete wall templates are required to be arranged, and the counter-force groove and the first foundation are arranged on the dry dock floor structure and are respectively used for connecting the counter-force piece and the connecting piece to form effective support, so that concrete materials do not need to be poured, and the concrete wall templates do not need to be arranged, so that the material cost and the labor cost are low; moreover, the concrete wall support cannot move, namely when a gap exists between the poured concrete wall and the outer side template, an auxiliary structure needs to be additionally arranged in the gap for transition, otherwise, an effective support cannot be formed, and by arranging a counter-force groove and a first foundation on the dry dock floor structure, the structure adopting the counter-force piece and a connecting piece can solve the problem of effective support by arranging the counter-force piece adaptive to the distance between the outer side template and the counter-force groove and arranging the connecting piece adaptive to the distance between the outer side template and the first foundation, and even can solve the gap problem in the subsequent process by adopting a telescopic structural piece; finally, by arranging the counter-force groove and the first foundation on the dry dock floor structure and by forming effective support by the structural form of the counter-force piece and the connecting piece, the floor area of the dry dock floor structure is smaller than that of a concrete wall, the problem that a walking channel cannot be arranged by the concrete wall is solved, and most space between the first foundation and the outer side template can be used for passing by the structural form of the counter-force piece and the connecting piece.
The lateral acting force applied when the outer side formworks are used for pouring concrete comprises buoyancy and upper lateral acting force besides lower lateral acting force and middle lateral acting force, wherein the upper lateral acting force is borne by connecting two outer side formwork supports through a split truss; the outer side formwork can be divided into an upper part of the outer side formwork, a middle part of the outer side formwork and a lower part of the outer side formwork according to the part supporting the lateral acting force.
Preferably, a first reinforced concrete for reinforcing a lateral supporting force is further provided in the reaction force groove, and the reaction force member is provided in the reaction force groove through the first reinforced concrete.
Preferably, the first foundation is also used for arranging a gantry crane or a bridge crane.
Preferably, a steel rail is arranged on the first foundation and used for being connected with a portal crane.
Preferably, the bottom plate structure of the immersed tube precast yard further comprises an anti-floating groove, and the anti-floating groove is used for arranging an anti-floating mechanism.
Preferably, the anti-floating mechanism comprises an anti-floating anchor rod and an anti-floating bolt connected to the anti-floating anchor rod. Through set up anti floating groove in the immersed tube precast yard bottom plate structure, set up anti mechanism of floating in anti floating groove, support for outside template and provide anti floating effort, prevent that outside template or outside template from supporting the buoyancy that brings because of concreting from taking place the displacement.
Preferably, the immersed tube precast yard bottom plate structure comprises a first inverted filter layer, a concrete layer and a plain concrete layer from bottom to top.
Preferably, immersed tube prefabrication field bottom plate structure still is provided with blind ditch pipe and sump pit, the pipe shaft setting of blind ditch pipe is in first inverted filter, and is a plurality of link to each other through the escape canal between the sump pit, the delivery outlet of blind ditch pipe with sump pit or escape canal communicate with each other.
A dock bottom arrangement method for pouring full-section precast concrete is applied to a dry dock system for pouring full-section precast concrete, and comprises the following steps:
s100, laying a bottom plate structure of the immersed tube precast yard in a layered mode, and arranging blind drain pipes for water seepage in a first inverted filter layer in the bottom plate structure of the immersed tube precast yard;
s200, setting a reaction groove, setting first reinforced concrete in the reaction groove, setting a first foundation and embedding an anti-floating anchor rod;
s300, arranging a second inverted filter layer and second reinforced concrete from bottom to top to form a dry dock bottom road.
Performing immersed tube prefabrication field bottom construction through the S100, and arranging a first inverted filter layer, a concrete layer and a plain concrete layer from bottom to top to form an immersed tube prefabrication field bottom plate structure, wherein a blind ditch pipe for water seepage is arranged in the first inverted filter layer; the construction of the embedded parts and the reserved holes is carried out through the S200, the reaction grooves are arranged, first reinforced concrete is arranged in the reaction grooves, the strength of the reaction grooves is enhanced, the reaction parts connected with the lower portions of the outer side templates are arranged through the reaction grooves when the concrete pouring device is used, the reaction grooves can support lateral acting force applied to the lower portions of the outer side templates when the concrete pouring device is poured, the lower portions of the outer side templates are prevented from deforming due to the lateral force of the concrete, a first foundation is arranged, the first foundation can support the middle portions of the outer side templates when the concrete pouring device is poured by connecting pieces arranged in the middle portions of the outer side templates when the concrete pouring device is used, the middle portions of the outer side templates are prevented from deforming due to the lateral force of the concrete, anti-floating anchor rods are embedded, and anti-floating bolts are connected through the anti-floating; the construction of the dry dock bottom road is carried out through the S300, the second inverted filter layer and the second reinforced concrete are arranged from bottom to top, so that the dry dock bottom has the running and other operation conditions such as formwork supporting installation and formwork installation, the blank that the arrangement method of the dock bottom for pouring the full-section precast concrete is not provided with a standard operation flow is filled through setting a three-step concrete construction operation method, technical guidance is provided for the arrangement method for pouring the full-section precast concrete, and the operation flow of the arrangement method for pouring the full-section precast concrete is standardized.
Wherein the outer formwork support is used for mounting the outer formwork.
Preferably, the S100 further comprises:
s000, constructing dry dock side slope pier protection, and constructing drainage ditches and water collecting wells.
Compared with the prior art, the invention has the beneficial effects that:
1. the pipe sinking prefabrication field bottom plate structure is used for prefabricating a sinking pipe, the pipe prefabrication field bottom plate structure is provided with a reaction groove and a first foundation, the reaction groove is used for arranging a reaction part connected with the lower part of the outer side template, and the reaction groove is reserved and is used for supporting the lateral acting force applied to the lower part of the outer side template during pouring by arranging the reaction part connected with the lower part of the outer side template, so that the lower part of the outer side template is prevented from deforming due to the lateral force of concrete, and the support of the outer side template is prevented from collapsing due to the lateral force of the concrete; the first foundation is used for arranging a connecting piece connected with the middle part of the outer side template, the first foundation is arranged, the connecting piece arranged at the middle part of the outer side template is connected when the dock floor structure is used, so that the middle part of the outer side template can be supported by lateral acting force when pouring is carried out on the first foundation, the middle part of the outer side template is prevented from deforming due to concrete lateral force, the outer side template is prevented from collapsing due to the concrete lateral force, the problem that the existing dock floor structure cannot meet the requirement of template support is solved by the structure, lateral supporting force is provided for the middle part of the outer side template by arranging the first foundation and the counter-force groove, and lateral supporting force is provided for the lower part.
2. Through set up anti floating groove in the immersed tube precast yard bottom plate structure, set up anti mechanism of floating in anti floating groove, support for outside template and provide anti floating effort, prevent that outside template or outside template from supporting the buoyancy that brings because of concreting from taking place the displacement.
3. Performing immersed tube prefabrication field bottom construction through the S100, and arranging a first inverted filter layer, a concrete layer and a plain concrete layer from bottom to top to form an immersed tube prefabrication field bottom plate structure, wherein a blind ditch pipe for water seepage is arranged in the first inverted filter layer; the construction of the embedded parts and the reserved holes is carried out through the S200, the reaction grooves are arranged, first reinforced concrete is arranged in the reaction grooves, the strength of the reaction grooves is enhanced, the reaction parts connected with the lower portions of the outer side templates are arranged through the reaction grooves when the concrete pouring device is used, the reaction grooves can support lateral acting force applied to the lower portions of the outer side templates when the concrete pouring device is poured, the lower portions of the outer side templates are prevented from deforming due to the lateral force of the concrete, a first foundation is arranged, the first foundation can support the middle portions of the outer side templates when the concrete pouring device is poured by connecting pieces arranged in the middle portions of the outer side templates when the concrete pouring device is used, the middle portions of the outer side templates are prevented from deforming due to the lateral force of the concrete, anti-floating anchor rods are embedded, and anti-floating bolts are connected through the anti-floating; the construction of the dry dock bottom road is carried out through the S300, the second inverted filter layer and the second reinforced concrete are arranged from bottom to top, so that the dry dock bottom has the running and other operation conditions such as formwork supporting installation and formwork installation, the blank that the arrangement method of the dock bottom for pouring the full-section precast concrete is not provided with a standard operation flow is filled through setting a three-step concrete construction operation method, technical guidance is provided for the arrangement method for pouring the full-section precast concrete, and the operation flow of the arrangement method for pouring the full-section precast concrete is standardized.
Description of the drawings:
FIG. 1 is a block diagram of a dry dock system for casting full-section precast concrete;
FIG. 2 is a schematic structural diagram of a bottom plate structure of a immersed tube precast field and a dock bottom road of a dry dock;
fig. 3 is a partially enlarged view of a region a in fig. 2;
FIG. 4 is a cross-sectional view of a bottom plate structure of the immersed tube precast yard;
FIG. 5 is a schematic view showing the connection between the reaction force groove and the lower portion of the outer mold plate;
FIG. 6 is a schematic view showing the connection relationship between the first base and the connecting member;
FIG. 7 is a schematic view showing the connection between the connecting member and the middle portion of the outer form;
FIG. 8 is a schematic structural view of the rail and the first foundation;
FIG. 9 is a schematic structural view of an anti-float mechanism;
FIG. 10 is a schematic view showing the connection between the anti-floating mechanism and the anti-floating groove;
FIG. 11 is a cross-sectional view of a dry dock bottom road;
FIG. 12 is a schematic structural view of a catch basin;
fig. 13 is a schematic view showing the connection relationship between the pier and the gutter.
The labels in the figure are: 1-immersed tube prefabrication field bottom plate structure, 101-inverted filter layer, 102-concrete layer, 103-plain concrete layer and 104-abrasive belt filling;
201-lower part of outer template, 202-counterforce component, 203-middle part of outer template, 204-connecting component;
301-counterforce slot, 302-first reinforced concrete;
401-first foundation, 402-steel rail, 403-bracing fulcrum;
501-anti-floating groove, 502-anti-floating mechanism, 5021-anti-floating anchor rod, 5022-anti-floating bolt, 5023-centering bracket and 503-grouting pipe;
6-dry dock bottom road, 601-second inverted filter layer, 602-second reinforced concrete;
701-blind ditch pipe, 702-water collecting well, 703-drainage ditch and 704-intercepting ditch;
8-pier protection;
9-pipe section bottom plate structure.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1, fig. 1 is a structural diagram of a dry dock system for casting full-section precast concrete, and a dry dock system for casting full-section precast concrete includes a immersed tube precast yard floor structure 1 for precast immersed tubes, one dry dock system includes one immersed tube precast yard floor structure 1, one immersed tube precast yard floor structure 1 includes two tube section floor structures 9, and the tube section floor structures 9 can be used for bearing immersed tube sections;
the top layer of the pipe section bottom plate structure 9 is paved with a steel plate, and the surface of the steel plate is coated with lubricating oil which is beef tallow.
The pipe section bottom plate structure 9 comprises a steel plate, broken stones, section steel, concrete and a third inverted filter layer from top to bottom.
The third inverted filter layer is used for filtering out the seepage water and storing the particles through the combination of different particle sizes of materials of the inverted filter layer.
The dry dock system is provided with a drainage system, particularly, a catch basin 704 is arranged around the bottom plate structure 1 of the immersed tube precast yard, a blind trench pipe 701 and a collector well 702 are arranged in the bottom plate structure 1 of the immersed tube precast yard, and particularly, the connection relationship between the blind trench pipe 701 and the collector well 702 is shown in fig. 2 and 3.
The dry dock system further comprises a dry dock bottom road 6, and the structure of the dry dock bottom road 6 is shown in figure 11.
As shown in fig. 2 and 3, fig. 2 is a schematic structural diagram of a immersed tube prefabricated field bottom plate structure 1 and a dry dock bottom road 6, fig. 3 is a partial enlarged view of an area a in fig. 2, the dock bottom system is provided with the immersed tube prefabricated field bottom plate structure 1 and the dry dock bottom road 6, the immersed tube prefabricated field bottom plate structure 1 includes a tube segment bottom plate structure 9, a reaction groove 301 and a first foundation 401 are provided on the immersed tube prefabricated field bottom plate structure 1, both ends of one tube segment bottom plate structure 9 are provided with a reaction groove 301, an anti-floating bolt 5022, a steel rail 402 and an inclined strut fulcrum 403, the reaction groove 301 and the anti-floating bolt 5022 are both multiple, and the reaction groove 301 and the anti-floating bolt 5022 are both arranged along the length direction of the tube segment bottom plate structure 9.
The specific positional relationship between the sprag fulcrum 403 and the first base 401 is shown in fig. 6.
Reaction force groove 301:
the reaction force groove 301 is used for arranging the reaction force member 202 connected with the outer formwork lower portion 201, and by arranging the reaction force member 202 connected with the outer formwork lower portion 201, the reaction force groove 301 can support the outer formwork lower portion 201 under the lateral action force during pouring, so that the outer formwork lower portion 201 is prevented from being deformed due to the lateral force of concrete, and the outer formwork support is prevented from collapsing due to the lateral force of the concrete.
First basis 401:
In addition, the lateral acting force applied when the outer side formworks are used for pouring concrete also comprises buoyancy and upper lateral acting force besides lower lateral acting force and middle lateral acting force, wherein the upper lateral acting force is borne by connecting two outer side formwork supports through a split truss, and the outer side formwork supports are used for supporting the outer side formworks.
The outer form may be divided into an outer form lower portion 201, an outer form middle portion 203, and an outer form upper portion according to the force points.
Drainage mechanism:
the bottom plate structure 1 of the immersed tube prefabrication field is further provided with blind ditch pipes 701 and water collecting wells 702, pipe bodies of the blind ditch pipes 701 are arranged on the first inverted filter layer 101, the water collecting wells 702 are connected through drainage ditches 703, and output ports of the blind ditch pipes 701 are communicated with the water collecting wells 702 or the drainage ditches 703.
As shown in fig. 4, fig. 4 is a cross-sectional view of the immersed tube prefabricated field bottom plate structure 1, the immersed tube prefabricated field bottom plate structure 1 comprises a first inverted filter layer 101, a concrete layer 102 and a plain concrete layer 103 from bottom to top except for a pipe section bottom plate structure 9, wherein a blind ditch pipe 701 is arranged in the first inverted filter layer 101, the blind ditch pipe 701 is wrapped with coarse cloth by a plastic pipe, the coarse cloth is used for water permeable filtration, and the blind ditch pipe 701 is used for drainage. Blind pipe 701 may also be provided in the third inverted filter layer in the pipe section floor structure 9.
The pipe section bottom plate structure 9 comprises a steel plate, broken stones, section steel, concrete and a third inverted filter layer from top to bottom.
A sanding belt 104 is also arranged in the plain concrete layer 103.
The first inverted filter layer 101 and the second inverted filter layer 601 filter out the seepage water and preserve particles through different grain size combinations of inverted filter layer materials.
As shown in fig. 5, fig. 5 is a schematic view of a connection relationship between a reaction force groove 301 and an outer formwork lower part 201, wherein a first reinforced concrete 302 for reinforcing a lateral supporting force is further arranged in the reaction force groove 301, the reaction force member 202 is arranged in the reaction force groove 301 through the first reinforced concrete 302, the reaction force member 202 is connected with the outer formwork lower part 201 through a structure of connecting channel steel and i-shaped steel, and the reaction force member 202 is i-shaped steel;
as shown in fig. 6 and 7, fig. 6 is a schematic connection relationship diagram of a first foundation 401 and a connecting piece 204, fig. 7 is a schematic connection relationship diagram of a connecting piece 204 and an outer side formwork middle part 203, fig. 6 and 7 show a schematic connection relationship diagram of a first foundation 401, a connecting piece 204 and an outer side formwork middle part 203, wherein the first foundation 401 is arranged on the immersed tube prefabrication yard bottom plate structure 1, the first foundation 401 is used for arranging a connecting piece 204 connected with the outer side formwork middle part 203, the connecting piece 204 can be arranged on the ground through a bracket such as the connecting piece 204 and the outer side formwork middle part 203 of fig. 7, the connecting piece 204 is arranged on the ground through a diagonal bracing fulcrum 403 on the edge of the first foundation 401, the first foundation 401 is also used for arranging a portal crane or a bridge crane, in this embodiment, the first foundation 401 is used for supporting the connecting piece 204 and for arranging the portal crane, i., the first foundation 401 and the steel rail 402 are connected by the steel rail 402, and the connection diagram is shown in detail in fig. 8.
As shown in fig. 8, fig. 8 is a schematic structural diagram of a steel rail 402 and a first foundation 401, the first foundation 401 comprises reinforced concrete, the steel rail 402 is arranged on the first foundation 401, the steel rail 402 is fixedly arranged on the reinforced concrete, and the reinforced concrete comprises a structure formed by pouring concrete on a reinforcement cage.
The ground comprises a dock bottom structure, and the dock bottom structure comprises a immersed tube prefabricated field bottom plate structure 1 and a dry dock bottom road 6.
As shown in fig. 9 and 10, fig. 9 is a schematic structural diagram of an anti-floating mechanism 502, fig. 10 is a schematic structural diagram of a connection relationship between the anti-floating mechanism 502 and an anti-floating groove 501, the immersed tube prefabrication field bottom plate structure 1 further comprises the anti-floating groove 501, the anti-floating groove 501 is used for arranging the anti-floating mechanism 502, the arrangement position of the anti-floating groove 501 is the position where the anti-floating bolt 5022 is arranged in fig. 2, and the anti-floating mechanism 502 comprises an anti-floating bolt 5021 and an anti-floating bolt 5022 connected to the anti-floating bolt 5021;
an anti-floating groove 501 is formed in the bottom plate structure 1 of the immersed tube precast yard, and an anti-floating mechanism 502 is arranged in the anti-floating groove 501 to provide anti-floating acting force for the outer side formwork and the outer side formwork support, so that the displacement of the outer side formwork or the outer side formwork support due to buoyancy caused by concrete pouring is prevented;
centering brackets 5023 are further welded on two sides of the anti-floating anchor rod 5021, after the centering brackets 5023 and the anti-floating anchor rod 5021 are arranged in the anti-floating groove 501, grouting is carried out through grouting pipes 503 beside the anti-floating anchor rod 5021, and concrete is filled in the space between the anti-floating anchor rod 5021 and the anti-floating groove 501.
As shown in fig. 11, fig. 11 is a cross-sectional view of a dry dock bottom road 6, the dry dock bottom road 6 is provided with a second inverted filter layer 601 and second reinforced concrete 602 from bottom to top, a blind ditch pipe 701 for water seepage is arranged in the second inverted filter layer 601, the dry dock bottom road 6 is used for vehicle passage, and the dry dock bottom road 6 is a road for vehicle passage around a section of the immersed tube precast field floor structure 1.
As shown in fig. 12, fig. 12 is a schematic structural diagram of an intercepting trench 704, and the intercepting trench 704 is disposed around the immersed tube precast yard base plate structure 1 and the dry dock bottom road 6.
As shown in fig. 13, fig. 13 is a schematic view of the connection relationship between the pier 8 and the drainage ditch 703, the pier 8 is arranged before the bottom plate of the sinking pipe prefabrication yard is laid, and the sump 702 and the drainage ditch 703 are arranged, and the pier 8 is arranged beside the drainage ditch 703.
Example 2
A dock floor arrangement method for casting full-section precast concrete, which applies the dry dock system for casting full-section precast concrete according to embodiment 1, includes the following steps:
s000, constructing a dry dock side slope protection pier 8 and a drainage ditch 703 and a water collection well 702;
s100, laying a immersed tube prefabricated field bottom plate structure 1 comprising a tube section bottom plate structure 9 and a dry dock bottom road 6 in a layered mode, and arranging a blind ditch pipe 701 for water seepage in a first inverted filter layer 101 in the immersed tube prefabricated field bottom plate structure 1;
s200, setting a reaction force groove 301, setting first reinforced concrete 302 in the reaction force groove 301, setting a first foundation 401, and embedding an anti-floating anchor rod 5021;
s300, arranging a second inverted filter layer 601 and second reinforced concrete 602 from bottom to top to form the dry dock bottom road 6.
S000 construction of the side slope pier 8 of the dry dock and construction of the drainage ditch 703 and the water collection well 702:
before the construction at the bottom of the immersed tube prefabrication field, the construction of a dry dock side slope protection pier 8 is firstly carried out, the immersed tube prefabrication field bottom plate structure 1 to be arranged is protected, then the construction of a water collecting well 702 and a drainage ditch 703 is carried out, a plurality of water collecting wells 702 are arranged at the periphery of the immersed tube prefabrication field bottom plate structure 1, the adjacent water collecting wells 702 are connected through the drainage ditch 703, the periphery of the immersed tube prefabrication field bottom plate structure 1 is drained, then a blind ditch pipe 701 is arranged in an inverted filter layer in the immersed tube prefabrication field bottom plate structure 1 through the construction at the bottom of the immersed tube prefabrication field, the port of the blind ditch pipe 701 is connected with the water collecting well 702 or the drainage ditch 703, the underground water in the inverted filter layer is enabled to carry out the water collection well 702 or the drainage ditch 703 along the blind ditch pipe 701, and the water seepage protection is carried out.
S100, construction at the bottom of a immersed tube prefabricating field:
the pipe section bottom plate structure 9 comprises a steel plate, broken stones, section steel, concrete and a third inverted filter layer from top to bottom; the part of the pipe prefabrication field bottom plate structure 1 except the pipe section bottom plate structure 9 is provided with an inverted filter layer, a concrete layer 102 and a plain concrete layer 103 from bottom to top, wherein a blind drain pipe 701 for water seepage is arranged in the first inverted filter layer 101;
s200, construction of an embedded part and a reserved hole:
the method comprises the steps of arranging a reaction groove 301 and arranging first reinforced concrete 302 in the reaction groove 301, enhancing the strength of the reaction groove 301, arranging a reaction member 202 connected with the outer side formwork lower part 201 through the reaction groove 301 when in use, enabling the reaction groove 301 to support the outer side formwork lower part 201 under lateral force when in pouring, preventing the outer side formwork lower part 201 from deforming due to the lateral force of the concrete, arranging a first foundation 401, enabling the first foundation 401 to support the outer side formwork middle part 203 under the lateral force when in pouring by connecting a connecting piece 204 arranged at the outer side formwork middle part 203 when in use, preventing the outer side formwork middle part 203 from deforming due to the lateral force of the concrete, embedding an anti-floating anchor rod 5021, and connecting an anti-floating bolt 5022 through the anti-floating anchor rod 5021 to enable the outer side formwork and the outer side formwork support not to generate displacement due to buoyancy generated by pouring; wherein the outer formwork support is used for mounting the outer formwork.
S300, constructing a dry dock bottom road 6:
and a second inverted filter layer 601 and second reinforced concrete 602 are arranged from bottom to top to form the dry dock bottom road 6, wherein a blind ditch pipe 701 is arranged in the second inverted filter layer 601.
Claims (10)
1. The dry dock system for pouring the full-section precast concrete is characterized by comprising a immersed tube precast yard bottom plate structure (1) for prefabricating immersed tubes, wherein a reaction force groove (301) and a first foundation (401) are arranged on the immersed tube precast yard bottom plate structure (1), the reaction force groove (301) is used for arranging a reaction force piece (202) connected with the lower portion (201) of an outer side formwork, and the first foundation (401) is used for arranging a connecting piece (204) connected with the middle portion (203) of the outer side formwork.
2. Dry dock system for casting full-section precast concrete according to claim 1, characterized in that a first reinforced concrete (302) for strengthening lateral support forces is further arranged in the counter force groove (301), the counter force element (202) being arranged in the counter force groove (301) through the first reinforced concrete (302).
3. Dry dock system for casting full-section precast concrete according to claim 2, characterized in that the first foundation (401) is also used for setting a gantry crane or a bridge crane.
4. Dry dock system for casting full-section precast concrete according to claim 3, characterized in that a steel rail (402) is provided on the first foundation (401), the steel rail (402) being used for connecting a gantry crane.
5. Dry dock system for casting full section precast concrete according to claim 4, characterised in that the immersed tube precast yard floor structure (1) further comprises an anti-floating trough (501), the anti-floating trough (501) being used for providing an anti-floating mechanism (502).
6. Dry dock system for casting full-section precast concrete according to claim 5, characterized in that the anti-floating mechanism (502) comprises anti-floating bolts (5021) and anti-floating bolts (5022) connected to the anti-floating bolts (5021).
7. Dry dock system for casting full-section precast concrete according to any one of claims 1 to 6, characterised in that the caisson precast yard floor structure (1) comprises, from bottom to top, a first inverted filter layer (101), a concrete layer (102) and a plain concrete layer (103).
8. Dry dock system for placing full-section precast concrete according to claim 7, characterized in that the caisson slab structure (1) is further provided with blind trench pipes (701) and water collection wells (702), the bodies of the blind trench pipes (701) are arranged in the first inverted filter layer (101), a plurality of the water collection wells (702) are connected with each other through drainage ditches (703), and the outlets of the blind trench pipes (701) are communicated with the water collection wells (702) or the drainage ditches (703).
9. A method of arranging a dock floor for casting of full-section precast concrete, characterized in that a dry dock system for casting of full-section precast concrete according to any one of claims 1 to 8 is applied, comprising the steps of:
s100, laying a immersed tube prefabricated field bottom plate structure (1) and a dry dock bottom road (6) in a layered mode, and arranging blind ditch pipes (701) for water seepage in a first inverted filter layer (101) in the immersed tube prefabricated field bottom plate structure (1);
s200, setting a reaction force groove (301), setting first reinforced concrete (302) in the reaction force groove (301), setting a first foundation (401), and embedding an anti-floating anchor rod (5021);
s300, arranging a second inverted filter layer (601) and second reinforced concrete (602) from bottom to top to form the dry dock bottom road (6).
10. The method of claim 9, wherein the S100 is preceded by:
s000, constructing a dry dock slope protection pier (8), and constructing a drainage ditch (703) and a water collection well (702).
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| CN201910745791.3A CN110450279B (en) | 2019-08-13 | 2019-08-13 | Dry dock system for pouring full-section precast concrete and arrangement method |
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| CN110450279B true CN110450279B (en) | 2020-04-28 |
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| KR101187778B1 (en) * | 2010-01-28 | 2012-10-04 | 코오롱글로벌 주식회사 | Form |
| CN202577349U (en) * | 2012-04-07 | 2012-12-05 | 中铁十八局集团有限公司 | Large immersed tube tunnel dry dock floor structure |
| WO2017166160A1 (en) * | 2016-03-31 | 2017-10-05 | 中交第二航务工程局有限公司 | Short-line match-casting-based precast template system for girder bridge having composite structure and corrugated steel webs |
| CN107419743A (en) * | 2017-05-16 | 2017-12-01 | 中国建筑第六工程局有限公司 | A kind of new city pipe gallery mobile formwork |
| CN110076888B (en) * | 2019-05-31 | 2024-04-09 | 中交武汉港湾工程设计研究院有限公司 | Construction template structure based on immersed tube prefabrication middle and narrow space corridor |
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