CN111270869B - Rammed earth wall reinforcing method - Google Patents
Rammed earth wall reinforcing method Download PDFInfo
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- CN111270869B CN111270869B CN202010104258.1A CN202010104258A CN111270869B CN 111270869 B CN111270869 B CN 111270869B CN 202010104258 A CN202010104258 A CN 202010104258A CN 111270869 B CN111270869 B CN 111270869B
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- rammed earth
- earth wall
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- reinforcing
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
- E04G23/0222—Replacing or adding wall ties
Abstract
The invention relates to the field of civil engineering, in particular to a rammed earth wall reinforcing method, which comprises the following steps: the method comprises the following steps: uniformly punching holes on the surface of the rammed earth wall, filling new soil into the holes and tamping to form a shear bar; step two: hanging grids on the surfaces of two sides of the rammed earth wall forming the shear bar, and fixing the grids on the surface of the rammed earth wall by using pins; step three: and laying new soil on the surface of the rammed earth wall with the grids fixed to cover the grids, and completing the reinforcement of the rammed earth wall. The invention has the beneficial effects that: the reinforcing method is simple to operate and high in construction safety; the material is convenient to obtain, the cost is low, the economy is better, and the safety performance of a house built by the rammed earth wall can be improved under the condition of not influencing the conventional use of the rammed earth building; the shear bar can restore the shear capacity of the partial wall body which loses the shear capacity, and the bearing capacity of the partial wall body is continued.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to a rammed earth wall reinforcing method.
Background
The house is a building which takes raw soil as a main building raw material and uses rammed earth walls rammed layer by layer as a main bearing component. The rammed earth wall not only has better bearing performance, but also has the advantages of heat preservation, heat insulation, sound insulation, fire prevention and the like. Houses built by rammed earth walls are widely distributed in China, have distinctive local characteristics and national characteristics, are full of thick local history and cultural atmosphere, are important components of the traditional residences of China, and at present, a large number of houses built by rammed earth walls still exist in vast rural areas of China. The rammed earth wall house is popular because of the advantages of convenient material taking, low manufacturing cost, heat preservation, heat insulation, natural fusion, environmental protection and the like. The building most in accordance with ecological principles contains extremely high scientific connotation and rich ecological ideas.
However, due to the limitation of the self performance of rammed earth materials, the building shear resistance of rammed earth walls is low, the integrity of the wall body and the building and the anti-seismic performance are poor, and under the action of long-time natural factors, a large number of rammed earth walls crack and have a large potential safety hazard due to the fact that the bearing capacity is reduced, and the like, and the large number of rammed earth walls are difficult to disassemble and rebuild in a short period, if the problem that the anti-seismic performance of the rammed earth walls of the raw earth structure is poor is to be improved, a reinforcing and modifying measure for the rammed earth walls of the existing raw earth structure is provided at first glance, and the reinforcing and modifying measure is significant.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the existing old rammed earth wall is cracked, safety is increased, reconstruction engineering quantity is large, and construction period is long.
In order to solve the technical problems, the invention adopts the technical scheme that: a rammed earth wall reinforcing method comprises the following steps:
the method comprises the following steps: uniformly punching holes on the surface of the rammed earth wall, filling new soil into the holes and tamping to form a shear bar;
step two: hanging grids on the surfaces of two sides of the rammed earth wall forming the shear bar, and fixing the grids on the surface of the rammed earth wall by using pins;
step three: and laying new soil on the surface of the rammed earth wall with the grids fixed to cover the grids, and completing the reinforcement of the rammed earth wall.
The invention has the beneficial effects that: the reinforcing method is simple to operate and high in construction safety; the material is convenient to obtain, the cost is low, the economy is better, and the safety performance of a house built by the rammed earth wall can be improved under the condition of not influencing the conventional use of the rammed earth building; the shear bar can restore the shear capacity of the partial wall body which loses the shear capacity and continue the bearing capacity of the partial wall body; the grid is corrosion-resistant, tensile strength is high, and the corrosion can not take place, not only can strengthen the wholeness of rammed earth wall and can also effectively prevent the wall body fracture, hits the new soil of certain thickness at rammed earth wall both sides surface layer by layer at last again, and it can play the effect of protecting original rammed earth wall and grid.
Drawings
FIG. 1 is a schematic grid diagram according to a second embodiment of the present invention;
FIG. 2 is a schematic diagram showing the arrangement positions of shear bars according to a second embodiment of the invention;
FIG. 3 is a schematic view of the construction of grids on two sides of a rammed earth wall according to the second embodiment of the present invention;
FIG. 4 is a schematic view of the method for laying fresh soil on both sides of a rammed earth wall according to the second embodiment of the present invention;
FIG. 5 is a schematic structural view of a rammed earth wall according to the second embodiment of the present invention after being reinforced;
description of reference numerals:
1-latitudinal ribs; 2-a warp rib; 3-cracking; 4-a shear bar; 5-gridding; 6-pin; 7-new soil; 8-laying a template of new soil.
Detailed Description
In order to explain technical contents, achieved objects, and effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments.
The most key concept of the invention is as follows: the old rammed earth wall can be reinforced, so that the integrity, the shearing resistance and the shock resistance of the old rammed earth wall are greatly improved; the potential safety hazard of the old rammed earth wall can be reduced without rebuilding the old rammed earth wall, and the engineering quantity is small.
The invention relates to a rammed earth wall reinforcing method, which comprises the following steps:
the method comprises the following steps: uniformly punching holes on the surface of the rammed earth wall, filling new soil into the holes and tamping to form a shear bar;
step two: hanging grids on the surfaces of two sides of the rammed earth wall forming the shear bar, and fixing the grids on the surface of the rammed earth wall by using pins;
step three: and laying new soil on the surface of the rammed earth wall with the grids fixed to cover the grids, and completing the reinforcement of the rammed earth wall.
The working principle of the invention is as follows: holes are uniformly drilled in the old rammed earth wall, and new earth is filled into the holes to form shear rods, so that the shear resistance and the shock resistance of the rammed earth wall are improved, the integral performance of the rammed earth wall is enhanced by the grids, the old wall body can be effectively prevented from cracking, and the integrity and the shock resistance of the rammed earth wall are further improved.
As can be seen from the above description, the beneficial effects of the present invention are: the reinforcing method is simple to operate and high in construction safety; the material is convenient to obtain, the cost is low, the economy is better, and the safety performance of a house built by the rammed earth wall can be improved under the condition of not influencing the conventional use of the rammed earth building; the shear bar can restore the shear capacity of the partial wall body which loses the shear capacity and continue the bearing capacity of the partial wall body; the grid is corrosion-resistant, tensile strength is high, and the corrosion can not take place, not only can strengthen the wholeness of rammed earth wall and can also effectively prevent the wall body fracture, hits the new soil of certain thickness at rammed earth wall both sides surface layer by layer at last again, and it can play the effect of protecting original rammed earth wall and grid.
Further, the first step specifically comprises: uniformly punching holes on the surface of the rammed earth wall along the direction of cracks or weak wall structure, filling new soil into the holes, and ramming to form a shear rod.
As can be seen from the above description, for the rammed earth wall with obvious cracks, the shear bars are uniformly arranged along the direction of the cracks, and the diameters and the intervals of the shear bars are determined according to the width of the cracks; to the rammed earth wall that does not appear the crack yet, then evenly set up the shear bar at the weak department of wall body structure as required, set up shear bar diameter and interval and decide according to the weak degree. Therefore, the shear resistance of the reinforced rammed earth wall can be further improved.
Further, the net includes a plurality of latitudinal direction muscle and warp direction muscle, latitudinal direction muscle and warp direction muscle intercrossing set up.
Furthermore, latitudinal direction muscle sets up in the top and the below of different warp-wise muscle along warp-wise alternately, warp-wise muscle sets up in the top and the below of different latitudinal direction muscle along latitudinal direction alternately.
According to the description, the plurality of latitudinal ribs are arranged in parallel at equal intervals, the longitudinal ribs penetrate through the upper portion of the first latitudinal rib, penetrate through the lower portion of the second latitudinal rib, penetrate through … … above the third latitudinal rib and penetrate through all the latitudinal ribs sequentially and vertically in an alternating mode, and therefore a grid can be formed.
Furthermore, the structures and the components of the latitudinal ribs and the longitudinal ribs are the same, and the latitudinal ribs and the longitudinal ribs both comprise a plurality of rib material units molded by resin infiltration.
Further, the rib material unit comprises a resin matrix and at least one fiber bundle arranged in the resin matrix.
As can be seen from the above description, the tendon unit can overcome the problem of the plant fiber such as the strip, the wood skeleton and the like which is easy to decay.
Furthermore, the material of the new soil is the same as that of the rammed earth wall.
As can be seen from the above description, the use of new soil made of the same material as the rammed earth wall can not damage the original architectural style of the rammed earth wall.
Further, the third step is specifically: and laying new soil on the surface of the rammed earth wall with the grids fixed, and striking and tamping until the grids are covered by the new soil in multiple layers to finish the reinforcement of the rammed earth wall.
Furthermore, the grid is made of FRP materials.
Example one
A rammed earth wall reinforcing method comprises the following steps:
the method comprises the following steps: uniformly punching holes on the surface of the rammed earth wall along the direction of cracks or weak wall structure, filling new soil into the holes and ramming to form shear rods;
step two: the method comprises the following steps that FRP grids are hung on the surfaces of two sides of a rammed earth wall forming a shear bar, and the FRP grids are fixed on the surface of the rammed earth wall through pins;
step three: and laying new soil on the surface of the rammed earth wall with the FRP grids fixed, beating and tamping until the FRP grids are covered by the multiple layers of new soil, and finishing the reinforcement of the rammed earth wall.
The FRP grids comprise a plurality of latitudinal ribs and longitudinal ribs, and the latitudinal ribs and the longitudinal ribs are arranged in a cross mode;
the latitudinal ribs are alternately arranged above and below different latitudinal ribs along the longitudinal direction, and the latitudinal ribs are alternately arranged above and below different latitudinal ribs along the latitudinal direction;
the latitudinal ribs and the longitudinal ribs have the same structure and components and comprise a plurality of rib units formed by resin infiltration, and each rib unit comprises a resin matrix and at least one fiber bundle arranged in the resin matrix;
the material of the new soil is the same as that of the rammed earth wall.
Example two
As shown in figure 1, the FRP grid consists of latitudinal ribs 1 and longitudinal ribs 2, the latitudinal ribs and the longitudinal ribs are woven in a crossing mode, the latitudinal ribs are alternately arranged above and below the longitudinal ribs along the longitudinal direction, and the longitudinal ribs are alternately arranged above and below the latitudinal ribs along the latitudinal direction.
As shown in FIG. 2, for the rammed earth wall with obvious cracks 3, the shear bars are uniformly arranged along the direction of the cracks 3 (the crack direction can be any direction), and the diameter and the distance of the shear bars are determined according to the width of the cracks 3; to the rammed earth wall that crack 3 has not appeared yet, then evenly set up the shear bar at the weak department of wall structure as required, set up shear bar diameter and interval and decide according to the weak degree.
As shown in fig. 3, the FRP grids on both sides of the rammed earth wall are erected, the FRP grids are hung on both sides of the rammed earth wall, and the FRP grids are fixed by bamboo pins.
As shown in fig. 4, the specification of a template 8 for laying fresh soil is determined according to the specification of a rammed earth wall, fresh soil 7 with proper formula and water content is filled, and is rammed downwards by using a handle of a hammer, so that the template 8 is lifted and rammed from bottom to top layer by layer, and the fresh soil is completely covered on the FRP grid.
As shown in fig. 5, the reinforced rammed earth wall includes a rammed earth wall body, FRP grids, and shear rods, holes are uniformly punched on the rammed earth wall along the cracks to fill and tamp the rammed earth wall body to form the shear rods, then the FRP grids are hung on the two side surfaces of the rammed earth wall body and fixed on the surface of the rammed earth wall body by using pins, and finally new earth with a certain thickness is beaten on the two side surfaces of the rammed earth wall body layer by layer to cover the FRP grids.
In conclusion, the beneficial effects provided by the invention are as follows: the reinforcing method is simple to operate and high in construction safety; the material is convenient to obtain, the cost is low, the economy is better, and the safety performance of a house built by the rammed earth wall can be improved under the condition of not influencing the conventional use of the rammed earth building; the shear bar can restore the shear capacity of the partial wall body which loses the shear capacity and continue the bearing capacity of the partial wall body; the grid is corrosion-resistant, tensile strength is high, and the corrosion can not take place, not only can strengthen the wholeness of rammed earth wall and can also effectively prevent the wall body fracture, hits the new soil of certain thickness at rammed earth wall both sides surface layer by layer at last again, and it can play the effect of protecting original rammed earth wall and grid. For the rammed earth wall with obvious cracks, uniformly arranging shear rods along the direction of the cracks, wherein the diameters and the intervals of the shear rods are determined according to the width of the cracks; to the rammed earth wall that does not appear the crack yet, then evenly set up the shear bar at the weak department of wall body structure as required, set up shear bar diameter and interval and decide according to the weak degree. Therefore, the shear resistance of the reinforced rammed earth wall can be further improved. The reinforcement unit can overcome the problem that plant fibers such as strips and wood skeletons are easy to decay. The new soil which is made of the same material as the rammed earth wall can not damage the original building style of the rammed earth wall.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent changes made by using the contents of the present specification and the drawings, or applied directly or indirectly to the related technical fields, are included in the scope of the present invention.
Claims (8)
1. A rammed earth wall reinforcing method is characterized by comprising the following steps:
the method comprises the following steps: uniformly punching holes on the surface of the rammed earth wall, filling new soil into the holes and tamping to form a shear bar;
step two: hanging grids on the surfaces of two sides of the rammed earth wall forming the shear bar, and fixing the grids on the surface of the rammed earth wall by using pins;
step three: laying new soil on the surface of the rammed earth wall with the grids fixed to cover the grids, and completing the reinforcement of the rammed earth wall;
the first step is specifically as follows: uniformly punching holes on the surface of the rammed earth wall along the direction of cracks or weak wall structure, filling new soil into the holes, and ramming to form a shear rod.
2. The method of reinforcing a rammed earth wall according to claim 1, wherein the grid comprises a plurality of latitudinal ribs and longitudinal ribs, and the latitudinal ribs and the longitudinal ribs are arranged to cross each other.
3. The method for reinforcing a rammed earth wall according to claim 2, wherein the latitudinal ribs are alternately arranged above and below different latitudinal ribs in the longitudinal direction, and the latitudinal ribs are alternately arranged above and below different latitudinal ribs in the latitudinal direction.
4. The method for reinforcing the rammed earth wall according to claim 2, wherein the latitudinal ribs and the longitudinal ribs are identical in structure and composition and comprise a plurality of rib material units formed by resin infiltration.
5. The method of reinforcing a rammed earth wall according to claim 4, wherein the reinforcement unit comprises a resin matrix and at least one fiber bundle disposed in the resin matrix.
6. The method of reinforcing a rammed earth wall according to claim 1, wherein the material of the new earth is the same as that of the rammed earth wall.
7. The method for reinforcing the rammed earth wall according to claim 1, wherein the step three is specifically: and laying new soil on the surface of the rammed earth wall with the grids fixed, and striking and tamping until the grids are covered by the new soil in multiple layers to finish the reinforcement of the rammed earth wall.
8. The method of reinforcing rammed earth wall according to claim 1, wherein the grid is made of FRP material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010104258.1A CN111270869B (en) | 2020-02-20 | 2020-02-20 | Rammed earth wall reinforcing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010104258.1A CN111270869B (en) | 2020-02-20 | 2020-02-20 | Rammed earth wall reinforcing method |
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| Publication Number | Publication Date |
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| CN111270869A CN111270869A (en) | 2020-06-12 |
| CN111270869B true CN111270869B (en) | 2022-02-25 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349078A (en) * | 2008-08-18 | 2009-01-21 | 昆明理工大学 | Bamboo reinforcement rammed earth wall building technique |
| CN103953205A (en) * | 2014-05-15 | 2014-07-30 | 福州大学 | Bamboo earthquake-proof reinforcing structure of existing raw soil wall and method thereof |
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2020
- 2020-02-20 CN CN202010104258.1A patent/CN111270869B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349078A (en) * | 2008-08-18 | 2009-01-21 | 昆明理工大学 | Bamboo reinforcement rammed earth wall building technique |
| CN103953205A (en) * | 2014-05-15 | 2014-07-30 | 福州大学 | Bamboo earthquake-proof reinforcing structure of existing raw soil wall and method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 浅谈福建传统建筑夯土墙修复技术;王小幸;《江西建材》;20190831;第154页 * |
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| CN111270869A (en) | 2020-06-12 |
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