CN110847444A - Construction method for collaborative settlement of ring beam, constructional column and rammed earth wall - Google Patents
Construction method for collaborative settlement of ring beam, constructional column and rammed earth wall Download PDFInfo
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- CN110847444A CN110847444A CN201911030195.3A CN201911030195A CN110847444A CN 110847444 A CN110847444 A CN 110847444A CN 201911030195 A CN201911030195 A CN 201911030195A CN 110847444 A CN110847444 A CN 110847444A
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- rammed earth
- reinforced concrete
- earth wall
- ring beam
- constructional column
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- 238000010276 construction Methods 0.000 title claims abstract description 20
- 239000011150 reinforced concrete Substances 0.000 claims abstract description 74
- 239000006260 foam Substances 0.000 claims abstract description 11
- 238000007906 compression Methods 0.000 claims abstract description 10
- 239000004567 concrete Substances 0.000 claims abstract description 8
- 239000010426 asphalt Substances 0.000 claims abstract description 6
- 238000002955 isolation Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 17
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 5
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 5
- 241001330002 Bambuseae Species 0.000 claims description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 5
- 239000011425 bamboo Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 abstract description 8
- 238000005336 cracking Methods 0.000 abstract description 3
- 238000001035 drying Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/84—Walls made by casting, pouring, or tamping in situ
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/38—Connections for building structures in general
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/92—Protection against other undesired influences or dangers
- E04B1/98—Protection against other undesired influences or dangers against vibrations or shocks; against mechanical destruction, e.g. by air-raids
Abstract
The invention relates to a construction method for collaborative settlement of a ring beam, a constructional column and a rammed earth wall, and belongs to the technical field of constructional engineering. The invention comprises a rammed earth wall, a reinforced concrete constructional column and a reinforced concrete ring beam; 5% -30% of volume-compression resilient aggregate is doped into the rammed earth wall, and the rammed earth wall is tamped; a groove is formed in a column head of a reinforced concrete constructional column of the rammed earth wall, a foam cushion layer is placed at the bottom of the groove, and an asphalt isolation layer is coated on the side wall of the groove. When the reinforced concrete ring beam is poured with concrete, the concrete flows into the groove to form a bulge on the bottom surface of the reinforced concrete ring beam, so that the horizontal dislocation of the reinforced concrete ring beam during earthquake is limited; sleeving the reinforcing steel bar section at the superposed position of the vertical reinforcing steel bar of the reinforced concrete constructional column and the reinforced concrete ring beam with a sleeve, and pouring concrete of the reinforced concrete ring beam. The invention can avoid the reinforced concrete ring beam cracking caused by the shrinkage of the rammed earth wall, can also reduce the shrinkage deformation of the rammed earth wall, and can obviously improve the overall performance of the rammed earth wall.
Description
Technical Field
The invention relates to a construction method for collaborative settlement of a ring beam, a constructional column and a rammed earth wall, and belongs to the technical field of constructional engineering.
Background
The traditional rammed earth building has a long history in China, and has the advantages of local materials, low manufacturing cost, environmental friendliness, warmness in winter and coolness in summer. However, with the development and application of modern materials and the influence of adverse factors such as poor self-strength, insufficient anti-seismic performance, poor durability and the like of the traditional rammed earth building structure, the rammed earth building gradually exits from the historical stage. However, in recent years, people pay more and more attention to the environment, the popularization of knowledge of green and rural building materials and the development of rural joyful work, the advantages of raw soil materials are paid more and more attention to and excavated by people, and rammed earth buildings are slowly revived and revived.
However, how to better combine the traditional raw soil material with the modern material for use, so as to improve the overall earthquake-resistant performance of the material needs to be solved. In order to improve the overall performance of the rammed earth wall and further improve the shock resistance, it is a common practice to add reinforced concrete ring beams and reinforced concrete constructional columns on the rammed earth wall. Because the main material of the rammed earth wall body is raw earth, the rammed earth wall body is limited by a construction ramming process, and a certain amount of water needs to be added to the material before ramming to moisten the raw material and then tamp the raw material. And after the tamped wall is dried, the material has certain vertical shrinkage. However, the shrinkage of reinforced concrete is extremely limited, and the reinforced concrete ring beam is difficult to be consistent with the shrinkage of the rammed earth wall under the vertical action of the reinforced concrete constructional column. Therefore, the reinforced concrete ring beam is easy to separate from the rammed earth wall, and under the influence of the self-weight load of the upper rammed earth wall, the reinforced concrete ring beam or the cast-in-place reinforced concrete floor slab is easy to crack, so that the overall performance of the rammed earth building is weakened, and the seismic performance of the structure is influenced. In order to fully exert the advantages of various materials and improve the seismic performance of modern rammed earth buildings, the problems are in urgent need of improvement.
Therefore, in order to achieve the consistent shrinkage of the reinforced concrete ring beam and the rammed earth wall and avoid the problem that the reinforced concrete ring beam and the floor slab are separated from the rammed earth wall and crack under the action of the load of the upper wall body, it is necessary to develop a construction method for the cooperative settlement of the ring beam, the constructional column and the rammed earth wall, so that the respective advantages of the materials are fully exerted, and the overall performance and the seismic performance of the wall body are improved.
Disclosure of Invention
The invention provides a construction method of a rammed earth wall capable of vertically settling at the joint of a ring beam and a constructional column, and aims to solve the technical problem that the ring beam and a floor slab cannot freely settle vertically under the action of the constructional column, so that the ring beam and the floor slab are cracked, and the overall performance of the rammed earth wall is weakened.
The technical scheme of the invention is as follows: a construction method for collaborative settlement of ring beams, constructional columns and rammed earth walls comprises the following steps:
step1, adding volume-compressed resilient aggregate 10 into the raw materials of the rammed earth wall 1 according to the volume ratio of 5-30% of the rammed earth wall 1, and tamping the lower rammed earth wall 1;
arranging a reinforced concrete constructional column 8 in the rammed earth wall 1 at the lower layer of the Step2 and extending into the rammed earth wall 1 at the upper layer, sleeving a sleeve 3 on a vertical reinforcing steel bar 9 of the reinforced concrete constructional column 8, wherein two ends of the sleeve 3 are respectively flush with the upper surface and the lower surface of the reinforced concrete ring beam 5, and a horizontal reinforcing steel bar 4 in the reinforced concrete ring beam 5 is staggered with the vertical reinforcing steel bar 9 in the reinforced concrete constructional column 8 but not connected and fixed;
step3, a groove 6 is formed in a plane, which is flush with the lower end of the sleeve 3, of the reinforced concrete constructional column 8 in a downward concave mode, a foam cushion layer 7 is laid on the plane, the foam cushion layer 7 is laid on the bottom surface of the groove 6, the asphalt isolation layer 2 is coated on the side surface of the groove 6, a certain gap exists between the sleeve 3 and the vertical steel bars 9, a space for lateral buckling of the vertical steel bars 9 is guaranteed, and coordinated sinking of the upper rammed earth wall 1, the reinforced concrete constructional column 8 and the reinforced concrete ring beam 5 is realized;
step4, pouring a reinforced concrete ring beam 5 on the upper surface of the rammed earth wall 1 at the lower layer, wherein concrete enters the groove 6 to form a bulge, and horizontal dislocation of the reinforced concrete ring beam 5 during an earthquake is limited;
step5, the upper layer of rammed earth wall 1 is constructed on the reinforced concrete ring beam 5, and the whole construction can be completed.
The volume-compression resilient aggregate 10 is made of materials with volume-compression resilient performance, such as rubber particles, bamboo chips or wood chips, and the volume-compression resilient aggregate 10 shrinks in volume due to pressure and generates expansive force on the rammed earth wall 1. When the rammed earth wall 1 is dried and shrunk, the volume of the rebound aggregate 10 compressed by the volume is expanded to compensate for partial drying and shrinking of the rammed earth wall 1, so that the shrinking degree of the rammed earth wall 1 is reduced, and the sinking amount of the upper rammed earth wall 1, the reinforced concrete constructional column 8 and the reinforced concrete ring beam 5 is reduced.
The invention has the beneficial effects that:
1. the invention ensures that the reinforced concrete ring beam can freely settle vertically at the joint of the reinforced concrete ring beam and the reinforced concrete constructional column, avoids the problem that the reinforced concrete ring beam cracks under the load of an upper wall body, and improves the overall performance of the ring beam.
2. The grooves of the reinforced concrete constructional column and the reinforced concrete ring beam are cast in situ together and are meshed with each other, so that the horizontal shear resistance of the node is improved.
3. The invention enables the structural members to be tightly combined, exerts the advantages of respective materials to cooperatively bear force, improves the overall performance of the wall body and obviously improves the shock resistance of the rammed earth building.
4. The rammed earth wall is doped with 5-30% (volume ratio) of volume-compression resilient aggregate, so that the drying shrinkage deformation of the rammed earth wall can be partially compensated, and the total settlement of the ring beam, the constructional column and the rammed earth wall is reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a rammed earth wall reinforced concrete construction column of the present invention;
FIG. 3 is a schematic cross-sectional view of a rammed earth wall of the present invention at the junction of a ring beam and a construction column;
FIG. 4 is a diagram of an embodiment of the present invention;
in the figure: 1-rammed earth wall, 2-asphalt isolation layer, 3-sleeve, 4-horizontal steel bar, 5-reinforced concrete ring beam, 6-groove, 7-foam cushion layer, 8-reinforced concrete constructional column, 9-vertical steel bar and 10-volume compression resilient aggregate.
Detailed Description
The invention is further described with reference to the following drawings and detailed description.
Example 1: as shown in fig. 1-3: the invention adopts the technical scheme that a specially designed reinforced concrete ring beam 5 and a reinforced concrete constructional column 8 are additionally arranged in an original rammed earth wall 1, so that the three components are cooperatively settled to avoid the rammed earth wall from cracking and improve the anti-seismic performance, and the concrete construction steps are as follows:
step1, adding volume-compressed resilient aggregate 10 into the raw materials of the rammed earth wall 1 according to the volume ratio of 5-30% of the rammed earth wall 1, and tamping the lower rammed earth wall 1;
arranging a reinforced concrete constructional column 8 in the rammed earth wall 1 at the lower layer of the Step2 and extending into the rammed earth wall 1 at the upper layer, sleeving a sleeve 3 on a vertical reinforcing steel bar 9 of the reinforced concrete constructional column 8, wherein two ends of the sleeve 3 are respectively flush with the upper surface and the lower surface of the reinforced concrete ring beam 5, and a horizontal reinforcing steel bar 4 in the reinforced concrete ring beam 5 is staggered with the vertical reinforcing steel bar 9 in the reinforced concrete constructional column 8 but not connected and fixed;
step3, a groove 6 is formed in a plane, which is flush with the lower end of the sleeve 3, of the reinforced concrete constructional column 8 and is recessed downwards, a foam cushion layer 7 is laid on the plane, the foam cushion layer 7 is laid on the bottom surface of the groove 6, and the side surface of the groove 6 is coated with the asphalt isolation layer 2;
step4, pouring a reinforced concrete ring beam 5 on the upper surface of the lower rammed earth wall 1, and enabling concrete to enter the groove 6 to form a bulge;
step5 is to construct the upper rammed earth wall 1 on the reinforced concrete ring beam 5.
Adopt the effective antidetonation of the earth rammed wall structure that above-mentioned construction method formed, prevent the different earth rammed wall fracture that leads to of several partial structure shrinkages, realize mainly from several aspects:
1. the volume-compression resilient aggregate 10 can be made of rubber particles, bamboo chips or wood chips and other materials with volume-compression resilient performance, and the volume-compression resilient aggregate 10 shrinks in volume due to pressure and generates expansive force on the rammed earth wall 1. When the rammed earth wall 1 is dried and shrunk, the volume of the rebound aggregate 10 compressed by the volume is expanded to make up for partial drying and shrinking of the rammed earth wall 1, so that the shrinking degree of the rammed earth wall 1 is reduced, and the sinking amount of the rammed earth wall 1 on the upper layer, the reinforced concrete constructional column 8 and the reinforced concrete ring beam 5 is reduced.
2. And a certain gap is reserved between the sleeve 3 and the vertical steel bar 9, when the rammed earth wall 1 on the upper layer, the reinforced concrete constructional column 8 and the reinforced concrete ring beam 5 sink due to the shrinkage of the rammed earth wall 1 on the lower layer, the steel bar 9 in the sleeve 3 has a space for lateral buckling, and the rammed earth wall 1 on the upper layer, the reinforced concrete constructional column 8 and the reinforced concrete ring beam 5 are guaranteed to sink in a coordinated manner.
3. The reinforced concrete constructional column 8 is poured into a groove 6 at the joint position with the bottom surface of the reinforced concrete ring beam 5, when the reinforced concrete ring beam 5 is poured on the reinforced concrete constructional column, concrete flows into the groove 6 to form a bulge on the bottom surface of the reinforced concrete ring beam 5, horizontal dislocation of the reinforced concrete ring beam 5 during earthquake is limited, the foam cushion layer 7 at the bottom in the groove 6 and the asphalt isolation layer 2 on the inner wall enable the rammed earth wall 1 on the upper layer to be in coordination with the constructional column 8 and the ring beam 5 to sink when the rammed earth wall 1 on the lower layer is dried and shrunk, and the ring beam 5 cannot crack.
Example 2: in the embodiment, the inner diameter of the sleeve 3 is 10-20mm larger than the outer diameter of the vertical steel bar 9 of the reinforced concrete constructional column 8. The sleeve 3 may be made of PVC, metal, raw bamboo or other suitable material. The thickness of the foam cushion 7 is 10-20 mm.
As shown in fig. 4, the present invention is applied to the main construction project of the "happy research and development center in rural areas of Yunnan", wherein the casing 3 is a PVC pipe, and the method effectively prevents the wall from cracking at the joint of the ring beam and the constructional column.
While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (6)
1. A construction method for collaborative settlement of ring beams, constructional columns and rammed earth walls is characterized by comprising the following steps: the method comprises the following steps:
step1, adding volume-compressed resilient aggregate (10) into the raw materials of the rammed earth wall (1) according to the volume ratio of 5-30% of the rammed earth wall (1), and tamping the lower rammed earth wall (1);
a reinforced concrete constructional column (8) is arranged in the rammed earth wall (1) at the lower layer of the Step2 and extends into the rammed earth wall (1) at the upper layer, a sleeve (3) is sleeved on a vertical steel bar (9) of the reinforced concrete constructional column (8), and two ends of the sleeve (3) are respectively flush with the upper surface and the lower surface of the reinforced concrete ring beam (5);
step3, a groove (6) is formed in a plane, which is in the same level with the lower end of the sleeve (3), of the reinforced concrete constructional column (8) and is recessed downwards, a foam cushion layer (7) is laid on the plane, the foam cushion layer (7) is laid on the bottom surface of the groove (6), and the side surface of the groove (6) is coated with the asphalt isolation layer (2);
step4, pouring a reinforced concrete ring beam (5) on the upper surface of the rammed earth wall (1) at the lower layer, and enabling concrete to enter the groove (6) to form a bulge;
step5, constructing the upper rammed earth wall (1) on the reinforced concrete ring beam (5).
2. The construction method of ring beam, constructional column and rammed earth wall collaborative settlement according to claim 1, characterized in that: the volume-compression resilient aggregate (10) is made of rubber particles, bamboo chips or wood chip materials.
3. The construction method of ring beam, constructional column and rammed earth wall collaborative settlement according to claim 1, characterized in that: horizontal steel bars (4) in the reinforced concrete ring beam (5) and vertical steel bars (9) in the reinforced concrete constructional column (8) are staggered but not connected and fixed.
4. The construction method of ring beam, constructional column and rammed earth wall collaborative settlement according to claim 1, characterized in that: the inner diameter of the sleeve (3) is 10-20mm larger than the outer diameter of a vertical steel bar (9) of the reinforced concrete constructional column (8).
5. The construction method of ring beam, constructional column and rammed earth wall collaborative settlement according to claim 1 or 4, characterized in that: the sleeve (3) is made of PVC, metal or raw bamboo material.
6. The construction method of ring beam, constructional column and rammed earth wall collaborative settlement according to claim 1, characterized in that: the thickness of the foam cushion layer (7) is 10-20 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911030195.3A CN110847444A (en) | 2019-10-28 | 2019-10-28 | Construction method for collaborative settlement of ring beam, constructional column and rammed earth wall |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911030195.3A CN110847444A (en) | 2019-10-28 | 2019-10-28 | Construction method for collaborative settlement of ring beam, constructional column and rammed earth wall |
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| CN110847444A true CN110847444A (en) | 2020-02-28 |
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| CN201911030195.3A Pending CN110847444A (en) | 2019-10-28 | 2019-10-28 | Construction method for collaborative settlement of ring beam, constructional column and rammed earth wall |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115637792A (en) * | 2022-11-14 | 2023-01-24 | 昆明理工大学 | Construction method of bamboo-wood-soil mixed wall with double-layer water evaporation channels |
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| CN109024266A (en) * | 2018-09-21 | 2018-12-18 | 湖北省交通规划设计院股份有限公司 | Meet the median strip concrete wall type guard rail connection structure and construction method of double width bridge differential settlement |
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2019
- 2019-10-28 CN CN201911030195.3A patent/CN110847444A/en active Pending
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|---|---|---|---|---|
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| CN105696733A (en) * | 2016-04-11 | 2016-06-22 | 天津城建大学 | Rammed earth wall with precast concrete constructional columns |
| CN206143951U (en) * | 2016-09-07 | 2017-05-03 | 昆明理工大学 | Connected node of rammed earth wall and blockwork |
| CN106894820A (en) * | 2017-01-17 | 2017-06-27 | 中国矿业大学 | A kind of waterproof well wall retractable device and its construction technology |
| CN109024266A (en) * | 2018-09-21 | 2018-12-18 | 湖北省交通规划设计院股份有限公司 | Meet the median strip concrete wall type guard rail connection structure and construction method of double width bridge differential settlement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115637792A (en) * | 2022-11-14 | 2023-01-24 | 昆明理工大学 | Construction method of bamboo-wood-soil mixed wall with double-layer water evaporation channels |
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