CN118241754A - Assembled jacket combined column and construction method thereof - Google Patents
Assembled jacket combined column and construction method thereof Download PDFInfo
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- CN118241754A CN118241754A CN202410620947.6A CN202410620947A CN118241754A CN 118241754 A CN118241754 A CN 118241754A CN 202410620947 A CN202410620947 A CN 202410620947A CN 118241754 A CN118241754 A CN 118241754A
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- 238000010276 construction Methods 0.000 title claims abstract description 23
- 239000004567 concrete Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000002131 composite material Substances 0.000 claims description 9
- 238000004873 anchoring Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 239000011440 grout Substances 0.000 claims 2
- 239000004033 plastic Substances 0.000 abstract description 13
- 229920003023 plastic Polymers 0.000 abstract description 13
- 239000011150 reinforced concrete Substances 0.000 abstract description 6
- 239000006185 dispersion Substances 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 6
- 230000006378 damage Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 239000002002 slurry Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000003733 fiber-reinforced composite Substances 0.000 description 3
- 238000009415 formwork Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 238000004088 simulation Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
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Abstract
The application provides an assembled jacket combined column and a construction method thereof, and belongs to the technical field of building structural columns. According to the application, the prefabricated ECC jacket is used for coating the inner cylinder, so that on one hand, concrete stripping can be effectively avoided, the restraint effect on column core concrete is enhanced, the cooperative tension performance of longitudinal reinforced concrete is improved, the strength and the ductility of a structural member are remarkably improved, and on the other hand, the prefabricated ECC jacket is directly used as a template of the inner cylinder, the process of supporting and demolding is omitted, and the whole construction period can be shortened. In addition, by combining the design method of the multi-plastic hinge, the variable cross section longitudinal ribs are arranged in the cross section of the combined column, so that the plastic deformation range of the component can be enlarged, dispersion plastic distribution is formed, and the distribution and development degree of the plastic can be controlled, thereby further improving the deformation capacity of the ECC jacket combined column and reducing the cost.
Description
Technical Field
The application belongs to the technical field of building structural columns, and particularly relates to an assembled jacket combined column and a construction method thereof.
Background
The structural columns are key vertical bearing structural members which are easy to damage in reinforced concrete buildings, the improvement of the earthquake resistance is an effective method for reducing the damage of the earthquake to the buildings, and the improvement of the earthquake resistance is usually enhanced by a jacket mode.
In the related art, the types of jackets generally include concrete jackets, iron jackets, FRP (fiber reinforced composite) jackets, steel jackets, and these different types of jackets can improve the strength and deformability of the reinforced concrete column. FRP jackets and steel jackets are relatively expensive and have relatively poor durability and high temperature resistance; the ductility improvement of the iron jacket and the concrete jacket is small; the split type connecting structure is adopted between the jacket and the column, namely, the reinforced concrete column inside is poured firstly, and then the jacket is coated on the periphery of the column. The mode has two defects, namely, the binding property of the jacket and the column body is not strong, the strength of the column body is improved to a limited extent, and the jacket can be installed after the column body is hardened and disassembled by firstly supporting a die in the casting process of the column body, so that the whole construction period is longer.
Therefore, it is necessary to provide an assembled jacket assembly column and a construction method thereof to solve the problems set forth in the background art.
Disclosure of Invention
According to the assembled jacket combined column and the construction method thereof, the prefabricated ECC jacket is used for coating the inner column body, the ECC jacket is directly used as a template of the inner column body, the process of formwork supporting and formwork removing is omitted, the whole construction period can be shortened, the column body can be tightly connected with the ECC jacket in the casting process, the integral strength of the structure is improved, and the anti-seismic performance is improved; and the ECC jacket has good high tensile strain and high tensile strength, can effectively prevent cracking and prolongs the service life of the combined column. In addition, the variable cross section longitudinal ribs are arranged in the cross section of the combined column, so that the plastic deformation range of the component can be enlarged, dispersion plastic distribution is formed, the deformation capacity of the ECC jacket combined column is further improved, the diameter of the longitudinal ribs in the column is gradually reduced from bottom to top, and the reduction of the consumption of the longitudinal ribs and the reduction of the cost are facilitated.
In order to solve the technical problems, the technical scheme of the application is as follows:
The assembled jacket combined column comprises an ECC jacket, wherein the ECC jacket is formed by stacking and splicing a plurality of prefabricated jacket rings, grouting sleeves and longitudinal ribs which are arranged in a one-to-one correspondence manner with the grouting sleeves are embedded in each jacket ring, the tops of the longitudinal ribs protrude out of the jacket rings to be exposed, and the bottoms of the longitudinal ribs are fixed with the grouting sleeves; in the two adjacent clamping sleeve rings, the protruding part of the longitudinal rib in the lower clamping sleeve ring is in grouting anchoring with the grouting sleeve in the upper clamping sleeve ring; the diameter of the longitudinal ribs in the upper jacket ring is smaller than that of the longitudinal ribs in the lower jacket ring; and the hollow area surrounded by the ECC jacket is used as a pouring space, concrete is poured into the pouring space, a cylinder integrated with the ECC jacket is formed after hardening, and the periphery of the cylinder is correspondingly coated by the ECC jacket.
Preferably, longitudinal ribs in different jacket rings are aligned in sequence in the vertical direction; a plurality of longitudinal ribs positioned in the same jacket ring are uniformly distributed along the jacket ring.
Preferably, the jacket ring is preformed by ECC material.
Preferably, the grouting sleeve is a half grouting sleeve and is divided into two connecting sections, the first connecting section is provided with an internal threaded hole, and the bottom of a longitudinal rib in the jacket ring above is in threaded connection with the internal threaded hole; the second connecting section comprises a hollow accommodating cavity, and the protruding part of the longitudinal rib in the lower jacket ring is correspondingly inserted into the accommodating cavity and anchored with the grouting sleeve in a grouting mode.
Preferably, the grouting sleeves are positioned at the bottom ends of the clamping collars, and the first connecting section is positioned above the second connecting section in each grouting sleeve; the second connecting section further comprises a pulp inlet and a pulp outlet, the pulp inlet and the pulp outlet are communicated with the accommodating cavity, the pulp inlet is used as an input port of pulp, and the pulp outlet is used as an overflow port of pulp.
Preferably, the top end of the jacket ring is further provided with a convex tenon in a protruding mode, the bottom end of the jacket ring is further provided with a concave tenon in a concave mode, the convex tenon at the top of the jacket ring below is correspondingly inserted into the concave tenon at the bottom of the jacket ring above, the convex tenon and the concave tenon are matched to form a mortise-tenon connection structure, and the mortise-tenon connection structure is located on the inner side of the longitudinal ribs.
Preferably, annular water stopping grooves are formed in the splicing surfaces of the two adjacent jacket rings, the water stopping grooves are located at the periphery of the mortise and tenon joint structure, water stopping strips are arranged in the water stopping grooves, and the water stopping strips are clamped between the two adjacent jacket rings.
Preferably, the inner surface of the jacket ring comprises a plurality of protrusions protruding towards the direction close to the column body, slots are formed in positions, corresponding to the protrusions, of the column body, and the protrusions are correspondingly inserted into the slots.
Preferably, the column is a circular column or a square column.
The construction method of the assembled jacket combined column comprises the following steps:
prefabricating a plurality of clamping rings according to the size design requirement of the combined column;
conveying the jacket ring to a construction area, inserting the reserved steel bars of the ground foundation into a grouting sleeve of the lowest jacket ring, and grouting and anchoring;
stacking and splicing a plurality of clamping rings in sequence above, enabling the protruding parts of the longitudinal ribs in the lower clamping ring to be inserted into grouting sleeves in the upper clamping ring, and then grouting and anchoring;
And (3) after the splicing of the plurality of jacket rings is completed, an ECC jacket is obtained, a hollow area surrounded by the ECC jacket is used as a pouring space, concrete is poured into the pouring space, a column body integrated with the ECC jacket is formed after hardening, and the periphery of the column body is correspondingly coated by the ECC jacket, so that the construction is completed.
The beneficial effects of the invention are as follows:
(1) The ECC combined column can fully utilize the high tensile strain and multiple crack development performance of the ECC material, obviously improve the ductility and the anti-seismic performance of the RC structural column, and avoid structural collapse;
(2) The design of the variable cross-section diameter longitudinal ribs fully utilizes the cooperative tensile capacity of the longitudinal ribs and the ECC, further improves the limit deformation of the ECC combined column, enlarges the damage range of the structure, and avoids serious damage or destruction of the structure caused by the formation of a single plastic hinge;
(3) The prefabricated ECC jacket can avoid on-site formwork erection and demolding of core concrete, is beneficial to reducing on-site wet workload and improving construction efficiency; the protrusion of the inner wall of the prefabricated ECC jacket is beneficial to improving the cooperative stress performance of the core concrete and the ECC jacket;
(4) The ECC jacket has good fatigue resistance and impermeability, and the water stop bars are arranged on the ECC prefabricated ring piece, so that the durability and the service cycle of the combined column can be improved;
(5) ECC matches the vertical muscle that the vertical diameter diminishes gradually, and does not dispose the stirrup, very big reduction steel consumption.
Drawings
FIG. 1 shows a schematic structural diagram of an assembled jacket assembly column provided by the application;
FIG. 2 shows a longitudinal cross-sectional view of the fabricated jacketed composite column shown in FIG. 1;
FIG. 3 shows a schematic view of the structure of the clip collar;
FIG. 4 shows a longitudinal cross-sectional view of the clip collar shown in FIG. 3 along line a-a;
Fig. 5 shows a graph of simulation of the earthquake resistance of comparative example, example 1 and example 2.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1-5, the present application provides an assembled jacket assembly column, which comprises a column 10 and an ECC jacket 20.
The ECC jacket 20 is formed by splicing a plurality of jacket rings 21 along the vertical direction, the jacket rings 21 are processed and formed in advance in a prefabrication mode, and then the ECC jacket 20 can be obtained after being transported to a construction site for splicing, so that the construction period can be greatly shortened.
The clip ring 21 is prefabricated and formed by ECC materials, and the engineering cement-based composite material (ECC) is a novel high-toughness concrete material, has multiple cracking mechanisms, high tensile strain and high tensile strength, and can reach more than 100 MPa. When the ECC jacket is applied to the concrete column, the stripping of the concrete can be effectively avoided, the restraint effect on the core concrete of the column is enhanced, the cooperative tension performance of the longitudinal reinforced concrete is improved, and the strength and the ductility of the structural member are obviously improved. The ECC material comprises cement, fly ash, water, quartz sand, a water reducing agent and polyethylene, wherein the proportion of the components is conventional in the art.
And a hollow area surrounded by the ECC jacket 20 is used as a pouring space, concrete is poured into the pouring space, the column body 10 integrated with the ECC jacket 20 is formed after hardening, and the periphery of the column body 10 is correspondingly coated by the ECC jacket 20.
In this embodiment, the column 10 is a square column, and in other embodiments, the column 10 may be a circular column. The cross-sectional shape of the clip collar 21 matches the cross-sectional shape of the cylinder 10. In the present embodiment, the cross section of the column 10 is square, and the cross section of the clip ring 21 is square ring-shaped.
Each jacket ring 21 is embedded with grouting sleeves 211 and longitudinal ribs 212 which are arranged in one-to-one correspondence with the grouting sleeves 211, the tops of the longitudinal ribs 212 protrude out of the jacket rings 21 to form an exposed state, and the bottoms of the longitudinal ribs are fixed with the grouting sleeves 211.
Specifically, the grouting sleeve 211 is a half grouting sleeve, and is divided into two connecting sections, namely a first connecting section and a second connecting section, wherein the first connecting section is provided with an internal threaded hole, and the bottom of a longitudinal rib in the upper jacket ring is in threaded connection with the internal threaded hole; the second connecting section comprises a hollow accommodating cavity, and the protruding part of the longitudinal rib in the lower jacket ring is correspondingly inserted into the accommodating cavity and anchored with the grouting sleeve in a grouting mode.
The accommodating chamber is communicated with the outside through a pulp inlet pipe 2111 and a pulp outlet pipe 2112, and the pulp inlet pipe 2111 and the pulp outlet pipe 2112 are arranged outside the clamping sleeve 21. Slurry is injected into the accommodating chamber through the slurry inlet pipe 2111, fills the accommodating chamber, and overflows through the slurry outlet pipe 2112. After the slurry in the accommodating chamber is hardened, the slurry can be anchored with the longitudinal ribs 212 to form an integrated structure.
Preferably, the diameter of the longitudinal ribs in the upper jacket ring is smaller than the diameter of the longitudinal ribs in the lower jacket ring. The shearing force exists at the upper part of the column, the bending moment value of the section of the column is larger as the section of the column is closer to the bottom of the column, so that the requirement of the bottom of the column for bending strength is larger than that of the upper part of the column, the diameter of the longitudinal ribs in the jacket ring below is selected to be larger than that of the longitudinal ribs in the upper Fang Gatao ring, the section area of the longitudinal ribs at the lower part in the combined column is larger than that of the upper part of the column, the bending strength of the lower part is increased, and the bending resistance is improved.
In addition, the variable cross section longitudinal ribs are arranged in the cross section of the combined column, so that a multi-plastic region can be formed, the plastic deformation range of the component is enlarged, dispersion plastic distribution is formed, the damage originally concentrated in the plastic hinge region at the end is distributed in the plurality of regions, the deformation capacity of the component is increased, the strength and the ductility of the ECC jacket combined column are further improved, the combined column obtains good deformation capacity, the deformation under the earthquake action can be effectively resisted, the plastic distribution and the plastic development degree can be controlled, the diameter of the longitudinal ribs in the column is gradually reduced from the bottom to the top, and the reduction of the consumption of the longitudinal ribs is facilitated, so that the cost is reduced.
Longitudinal ribs 212 in different jacket rings 21 are aligned in sequence in the vertical direction to ensure that no dislocation occurs after the longitudinal ribs 212 are connected by the grouting sleeve 211.
A plurality of longitudinal ribs 212 located in the same jacket ring 21 are uniformly distributed along the jacket ring 21. Specific: when the clip collar 21 has a circular annular structure, the plurality of longitudinal ribs 212 are distributed in an annular array along the axis of the clip collar 21; when the clip ring 21 has a square annular structure, the longitudinal ribs 212 on opposite sides of the clip ring 21 are symmetrical to each other, and the longitudinal ribs 212 on any side of the clip ring 21 are equidistantly spaced.
In order to better realize the installation of the jacket ring 21, the top end of the jacket ring 21 is also convexly provided with a tenon 213, the bottom end is also concavely provided with a mortise 214, the tenon at the top of the jacket ring below is correspondingly inserted into the mortise at the bottom of the jacket ring above to form a mortise-tenon connection structure in a matched manner, and the mortise-tenon connection structure is positioned at the inner side of the longitudinal rib 212. The mortise and tenon joint structure can play a role in auxiliary positioning in the installation process, can play a limiting role after the installation is completed, and avoids horizontal displacement.
Further, the annular water stopping grooves 215 are formed in the splicing surfaces of the two adjacent clamping sleeve rings 21, water stopping strips 216 are arranged in the water stopping grooves 215, the water stopping strips 216 are clamped between the two adjacent clamping sleeve rings 21, the water stopping strips 216 can increase waterproof performance, and rainwater is prevented from entering the combined pile.
The inner surface of the clip collar 21 is formed with a protrusion 217 protruding toward the direction approaching to the column body 10, a slot is formed at a position of the column body 10 corresponding to the protrusion 217, and the protrusion 217 is correspondingly disposed in the slot. The protrusions 217 may increase the contact area between the jacket ring 21 and the column 10, so that the jacket ring 21 and the column 10 are firmly connected.
In the present embodiment, four clip rings 21 are provided on each of the columns 10.
The material of the longitudinal rib 212 is HRB300. The diameters of the longitudinal ribs 212 in the four clip rings 21 are, in order from bottom to top: 28mm,22mm,18mm and 16mm, and the number of longitudinal ribs is 12, and the longitudinal ribs are uniformly distributed around the clip ring 21.
The width of the water stopping groove 215 is 10mm, and the depth is 10mm; the width of the water stop strip 216 is 10mm, the height is 20mm, and the dimensions of the protrusions 217 are 20mm×20mm.
The strength of the cylinder 10 and the clip collar 21 is C30.
In order to test the anti-seismic performance of the assembled jacket composite column provided by the application, a numerical model of the assembled jacket composite column is established according to the numerical values, a comparison test is set, peak deformation and bearing capacity are obtained based on push-over analysis, and simulation results are shown in table 1 and fig. 5. Wherein, the comparative test set up is as follows:
comparative example: adopting a common full-section reinforced concrete column (the diameter of a longitudinal rib is 28 mm) in the prior art;
Example 1: the assembled jacket combination column provided by the application is adopted;
Example 2: on the basis of example 1, the longitudinal ribs in each jacket ring were replaced with the same diameter (longitudinal rib diameter 28 mm).
Table 1 peak deformation and load carrying capability test results table
| Peak deformation (mm) | Peak deformation change | Peak shear force (N) | Peak shear change | Reinforcing steel bar dosage (mm 3) | Reinforcement amount change | |
| Comparative example | 150 | - | 51640 | - | 47928960 | |
| Example 1 | 279 | 186% | 63695 | 123.3% | 26112240 | 54.5% |
| Example 2 | 216 | 144% | 65898 | 127.6% | 44311680 | 92.5% |
Simulation results show that the strength and the limit deformation of the example 1 are respectively improved by 23.3 percent and 86 percent compared with those of the comparative example, and the consumption of the reinforcing steel bars is reduced by 45.5 percent; example 2 has 27.6% and 44% improvement in strength and limit deformation, respectively, and 7.5% reduction in rebar usage, as compared to comparative example. The result shows that the design of the diameter change of the longitudinal ribs can reduce the consumption of the reinforcing steel bars and further improve the limit deformation of the combined column under the condition of very little strength reduction, and the reason is that the rigidity of the ECC jacket on the upper part of the combined column is reduced due to the design of the diameter change, and the deformation is relatively large, so that the limit deformation and the energy consumption capacity of the whole combined column are improved. In addition, the assembled jacket combined column provided by the application saves the reinforcement in the column body 10 while ensuring the strength and the deformability, so that the reinforcement distribution process can be omitted in the construction of the combined column, and the construction period is greatly shortened.
The application also provides a construction method of the assembled jacket combined column, which comprises the following steps:
prefabricating a plurality of clamping rings according to the size design requirement of the combined column;
conveying the jacket ring to a construction area, inserting the reserved steel bars of the ground foundation into a grouting sleeve of the lowest jacket ring, and grouting and anchoring;
stacking and splicing a plurality of clamping rings in sequence above, enabling the protruding parts of the longitudinal ribs in the lower clamping ring to be inserted into grouting sleeves in the upper clamping ring, and then grouting and anchoring;
And (3) after the splicing of the plurality of jacket rings is completed, an ECC jacket is obtained, a hollow area surrounded by the ECC jacket is used as a pouring space, concrete is poured into the pouring space, a column body integrated with the ECC jacket is formed after hardening, and the periphery of the column body is correspondingly coated by the ECC jacket, so that the construction is completed.
Preferably, the construction method further comprises the step of arranging water stop bars on the splicing surfaces of two adjacent jacket rings.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.
Claims (10)
1. The assembled jacket combined column is characterized by comprising an ECC jacket, wherein the ECC jacket is formed by stacking and splicing a plurality of prefabricated jacket rings, a grouting sleeve and longitudinal ribs which are arranged in a one-to-one correspondence manner with the grouting sleeve are embedded in each jacket ring, the tops of the longitudinal ribs protrude out of the jacket rings to form an exposed state, and the bottoms of the longitudinal ribs are fixed with the grouting sleeve; in the two adjacent clamping sleeve rings, the protruding part of the longitudinal rib in the lower clamping sleeve ring is in grouting anchoring with the grouting sleeve in the upper clamping sleeve ring; the diameter of the longitudinal ribs in the upper jacket ring is smaller than that of the longitudinal ribs in the lower jacket ring; and the hollow area surrounded by the ECC jacket is used as a pouring space, concrete is poured into the pouring space, a cylinder integrated with the ECC jacket is formed after hardening, and the periphery of the cylinder is correspondingly coated by the ECC jacket.
2. The fabricated jacketed composite column of claim 1, wherein the longitudinal ribs located within different jacket rings are aligned sequentially in the vertical direction; a plurality of longitudinal ribs positioned in the same jacket ring are uniformly distributed along the jacket ring.
3. The fabricated jacketed composite column of claim 1, wherein the jacket ring is preformed from an ECC material.
4. The assembled jacket assembly column according to claim 1, wherein the grouting sleeve is a half grouting sleeve which is divided into two connecting sections, the first connecting section is provided with an internal threaded hole, and the bottom of the longitudinal rib in the jacket ring above is in threaded connection with the internal threaded hole; the second connecting section comprises a hollow accommodating cavity, and the protruding part of the longitudinal rib in the lower jacket ring is correspondingly inserted into the accommodating cavity and anchored with the grouting sleeve in a grouting mode.
5. The fabricated jacketed composite column of claim 4, wherein the grout sleeve is located at the bottom end of the jacket ring, each of the grout sleeves having a first connection segment above a second connection segment; the second connecting section further comprises a pulp inlet and a pulp outlet, the pulp inlet and the pulp outlet are communicated with the accommodating cavity, the pulp inlet is used as an input port of pulp, and the pulp outlet is used as an overflow port of pulp.
6. The assembled jacket assembly column according to claim 1, wherein the top end of the jacket ring is further provided with a convex tenon in a protruding mode, the bottom end of the jacket ring is further provided with a concave tenon in a recessed mode, the convex tenon at the top of the jacket ring below is correspondingly inserted into the concave tenon at the bottom of the jacket ring above, and the convex tenon and the concave tenon are matched to form a mortise-tenon connection structure, and the mortise-tenon connection structure is located on the inner side of the longitudinal ribs.
7. The assembled jacket assembly column according to claim 6, wherein annular water stopping grooves are formed in the splicing surfaces of two adjacent jacket rings, the water stopping grooves are located on the periphery of the mortise-tenon joint structure, water stopping strips are arranged in the water stopping grooves, and the water stopping strips are clamped between the two adjacent jacket rings.
8. The assembled jacket assembly column according to claim 1, wherein the inner surface of the jacket ring comprises a plurality of protrusions protruding toward the direction close to the column body, slots are formed in the column body at positions corresponding to the protrusions, and the protrusions are correspondingly inserted into the slots.
9. The fabricated jacketed composite column of claim 1, wherein the column is a circular column or a square column.
10. A method of constructing a fabricated jacketed composite column as set forth in any one of claims 1 to 9, comprising the steps of:
prefabricating a plurality of clamping rings according to the size design requirement of the combined column;
conveying the jacket ring to a construction area, inserting the reserved steel bars of the ground foundation into a grouting sleeve of the lowest jacket ring, and grouting and anchoring;
stacking and splicing a plurality of clamping rings in sequence above, enabling the protruding parts of the longitudinal ribs in the lower clamping ring to be inserted into grouting sleeves in the upper clamping ring, and then grouting and anchoring;
And (3) after the splicing of the plurality of jacket rings is completed, an ECC jacket is obtained, a hollow area surrounded by the ECC jacket is used as a pouring space, concrete is poured into the pouring space, a column body integrated with the ECC jacket is formed after hardening, and the periphery of the column body is correspondingly coated by the ECC jacket, so that the construction is completed.
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