CN112096113A

CN112096113A - High-ductility concrete caulking reinforced ancient building masonry wall and reinforcing construction process thereof

Info

Publication number: CN112096113A
Application number: CN202010953925.3A
Authority: CN
Inventors: 谢启芳; 浩文明; 徐敦峰; 郑建国; 徐建
Original assignee: Xian University of Architecture and Technology
Current assignee: Xian University of Architecture and Technology
Priority date: 2020-09-11
Filing date: 2020-09-11
Publication date: 2020-12-18

Abstract

The utility model provides a reinforced ancient building masonry wall body of high ductility concrete caulking and reinforcement construction process thereof, includes the masonry block body, and the masonry block body is the original block of wall body, and original sticky rice mortar is the original sticky rice mortar of wall body, rejects the mortar joint and for rejecting the part at the design reinforcement position the gap that original sticky rice mortar stayed, high ductility concrete for reinforcing with the caulking material, bond into a whole with the masonry block body, newly-increased pointing sticky rice mortar is in high ductility concrete outside 3-5mm pointing and with the masonry block body outside flushes, carbon cloth pass through epoxy glue with original sticky rice mortar bonds. The invention has the advantages of improving the integrity, the seismic performance, the bearing capacity and the impermeability of the ancient brick and stone wall and furthest reserving the original appearance of the ancient brick and stone wall.

Description

High-ductility concrete caulking reinforced ancient building masonry wall and reinforcing construction process thereof

Technical Field

The invention relates to the technical field of historic building reinforcement, in particular to a high-ductility concrete caulking reinforced historic building masonry wall and a reinforcement construction process thereof.

Background

The ancient building masonry structure witnesses the development course of the bright civilization of Chinese nationalities and has rich cultural and scientific research values. However, the serious damage of the masonry structure is caused by adverse factors such as natural disasters, severe environments, historical war disorder and the like, for example, the tower top of the small anser tower in western security is damaged by shaking, the small anser tower is split along the vertical central axis, and the tower eave is seriously damaged. The repair research work for masonry structures has been very slow. The repairing effect of the masonry structure is considered, and the principles of 'old repair and minimum intervention' in ancient building repairing are also met. The existing masonry structure reinforcing method, such as grouting and joint filling, is easy to cause uneven stress distribution due to the fact that the elastic modulus of grouting materials is different from that of raw materials, and further secondary damage is generated.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide the historic building masonry wall reinforced by the high-ductility concrete caulking and the reinforcement construction process thereof.

In order to achieve the purpose, the invention adopts the technical scheme that:

the utility model provides a reinforced ancient building masonry wall body of high ductility concrete caulking, includes masonry block 1, masonry block 1 be the original block of wall body, masonry block 1 between be original sticky rice mortar 2, original sticky rice mortar 2 be provided with the reinforcement position, reinforcement position for rejecting the part original sticky rice mortar 2 gap of leaving, the gap for rejecting

mortar

3, 3 departments of rejecting mortar are provided with high ductility concrete 4, high ductility concrete 4 will reject mortar 3 and masonry block 1 and bond into a whole, high ductility concrete 4 carry out the pointing through newly-increased pointing sticky rice mortar 5 along length and the direction of depth outside 3-5mm, newly-increased pointing sticky rice mortar 5 flushes with the 1 outside of masonry block.

The depth of the high-ductility concrete 4 is 10-20% of the thickness of the wall body.

A reinforcing construction process for an ancient building masonry wall reinforced by high-ductility concrete caulking comprises the following steps;

1, forming a groove along a horizontal mortar joint between masonry blocks 1 by using a chisel, cleaning dust in the groove, washing with clear water, and brushing 1:3 cement paste;

2, embedding high-ductility concrete 4, reserving a gap of 3-5mm, and compacting by using an ash knife;

3 pointing the gap with glutinous rice mortar 5, compacting and leveling with a trowel, and curing for 28 days under natural conditions.

And in the step 2, gaps are reserved for 3-5mm respectively at two ends in the length direction and in the depth direction of the wall body.

And (3) continuously caulking two layers of mortar joints of the grooves in the step (1) every 3-5 bricks along the height direction of the wall.

The groove depth in the step 1 is 10-20% of the wall thickness.

The invention has the beneficial effects that:

1) the high-ductility concrete caulking reinforced ancient building masonry wall and the reinforcing construction process thereof have the advantages of simple operation and easy realization in the construction process.

2) The high-ductility concrete caulking reinforcement can effectively increase the bonding performance of mortar joints, improve the shearing bearing capacity of mortar joints of a masonry wall body, and effectively improve the integrity of the wall body by forming a local reinforcing layer through two continuous layers of mortar joints.

3) The appearance of the reinforced masonry wall body is smaller than that of the original masonry wall body, so that the historical appearance of the ancient masonry wall body is kept to the maximum extent.

Drawings

FIG. 1 is a schematic view of a high-ductility concrete caulking portion of a high-ductility concrete caulking reinforced ancient brick and stone wall provided by the invention.

Fig. 2 is a front view of a high-ductility concrete caulked reinforced ancient masonry wall provided by the present invention.

Fig. 3 is a cross-sectional view taken along the line 1-1 in fig. 2.

FIG. 4 is a flow chart of the construction process of the high-ductility concrete caulked reinforced ancient masonry wall provided by the invention.

Wherein 1 is a masonry block; 2 is original glutinous rice mortar; 3, removing the mortar joints; 4 is high-ductility concrete; 5 adding pointing glutinous rice mortar.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1 to 4, the ancient brick and stone wall reinforced by high-ductility concrete caulking and the reinforcing construction process thereof comprise the following steps:

1, forming a groove along a horizontal mortar joint of a wall body by using a chisel, cleaning dust in the groove, washing by using clear water, and brushing 1:3 cement paste;

The length of the groove is equal to that of the reinforced wall, and the height of the groove is equal to the thickness of the mortar joint.

Reserving 3-5mm at two ends of the wall along the length direction and the depth direction respectively, and pointing with glutinous rice mortar 5.

And continuously caulking two layers of mortar joints every 3-5 bricks along the height direction of the wall body.

The depth of the groove is 10-20% of the thickness of the wall.

The high-ductility concrete caulking reinforced ancient building masonry wall and the reinforcing construction process thereof are only exemplary embodiments, the implementation of the invention is not limited to the above, and any creative modification and deformation based on the scheme are still within the protection scope of the invention.

Claims

1. A high-ductility concrete caulking reinforced ancient building masonry wall is characterized by comprising masonry blocks (1), the masonry blocks (1) are original blocks of the wall body, original glutinous rice mortar (2) is arranged between the masonry blocks (1), the original sticky rice mortar (2) is provided with a reinforcing part, the reinforcing part is a gap left by removing part of the original sticky rice mortar (2), the gap is a removed mortar joint (3), high-ductility concrete (4) is arranged at the position of the removed mortar joint (3), the removed mortar joint (3) and the masonry block body (1) are bonded into a whole by the high-ductility concrete (4), the high-ductility concrete (4) is subjected to jointing by newly adding jointing sticky rice mortar (5) along the length and the depth direction of 3-5mm at the outer side, and the newly added jointing sticky rice mortar (5) is flush with the outer side of the masonry block body (1).

2. The high-ductility concrete caulked reinforced ancient building masonry wall according to claim 1, characterized in that the high-ductility concrete (4) has a depth of 10% -20% of the wall thickness.

3. The reinforcing construction process of the high-ductility concrete caulking-reinforced ancient building masonry wall body based on the claim 1 is characterized by comprising the following steps;

1. a groove is formed along a horizontal mortar joint between the masonry blocks (1) by using a chisel, dust in the groove is cleaned, and 1:3 cement paste is coated after the groove is washed by clear water;

2. embedding high-ductility concrete (4), reserving a gap of 3-5mm, and compacting by using an ash knife;

3. pointing the gap with glutinous rice mortar (5), compacting with a trowel, troweling, and curing under natural conditions for 28 days.

4. The reinforcing construction process for the ancient building masonry wall body through high-ductility concrete caulking reinforcement according to claim 3, wherein gaps in the step 2 are reserved for 3-5mm along the two ends of the wall body in the length direction and the depth direction respectively.

5. The process of claim 3, wherein the grooves of step 1 are caulked with two successive layers of mortar joints every 3-5 bricks along the height direction of the wall.

6. The process of claim 3, wherein the depth of the groove in step 1 is 10-20% of the wall thickness.