The quality of masonry construction of infilled wall plays a key role in the occurrence of hollowing and cracks in the process of wall use, which directly affects the overall construction quality of the project
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It is concluded from previous projects that the main problems affecting the masonry qualification rate are more cracks on the wall surface and loose blocks
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This example shows that in the excellent project of Hebei Construction Engineering Group, the project department determines three major factors that affect the qualified rate of wall masonry construction: ① slotting and wiring on the wall surface, ② uneven settlement of the wall, ③ excessive secondary drilling in installation construction, and takes corresponding measures to improve the quality of masonry project, It is worthy of your reference
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① According to the slotted wiring on the wall, 1
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Adopt the concealed laying technology of block concealed slotted electrical conduit
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1
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Before masonry, combine the electrical piping diagram with the brick layout of masonry wall, and number the blocks through which the piping passes
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2
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At the same time, the number of blocks are pre processed
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The specific method of pre processing is to draw the position and diameter of piping on the number of masonry, and then the size of piping diameter is + 2cm to slot the block
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3
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After the completion of the above work, the electrical piping prefabrication was started
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4
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After the completion of the production, the masonry of the masonry wall will be started
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When laying to the position of the cable pipe, the pipe shall be fixed in the slot of the numbered masonry by U-shaped card, and the slot shall be filled with masonry mortar
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The effect of block accurate slotting after slotting block masonry the schematic diagram of line pipe concealed slotting technology masonry construction: ① number the line pipe through the block; ② pre process the numbered block; ③ pre manufacture the line pipe; ④ wall masonry; ⑤ concealed laying of line pipe and mortar filling; ⑥ The wall masonry is completed
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2
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The way of structural column should be used for more parts of pipe
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1
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The pipe should be made first for more parts of pipe
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2
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The line pipe at this position is fixed by welding with the wall bar
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3
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Formwork erection and expansive fine aggregate concrete pouring
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Reinforcement method of constructional column for masonry wall with more parts of line pipe for masonry wall effect after pouring of constructional column for masonry wall with more parts of line pipe for masonry wall 3
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According to the “concealed laying technology of block concealed slotted electrical line pipe”, workers were organized to build the model wall at the construction site, so as to check the effect of this technology on controlling wall cracks
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The implementation effect of the method of masonry template wall block dark slotted template: there are no through joints and cracks on the wall surface, and the integrity of the block is good
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② Aiming at the uneven settlement of the wall, 1
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Control the daily masonry height of the wall
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In the construction of the wall, the construction team is in the rush period to reduce the cost, so it is easy to ignore the influence of the masonry height on the wall settlement
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In order to ensure the masonry quality, the regional flow construction is adopted, and the masonry height of each regional wall shall not exceed 1.5m every day
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Control the masonry height every day
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Site Figure 2: ensure the wall standing time, and control the top inclined masonry height and angle
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1
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Before the wall is laid to the beam bottom or slab bottom for inclined masonry, the wall must be kept standing for 14 days according to the specification requirements, so that the wall settlement tends to be stable before the inclined masonry construction can be carried out
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It is strictly forbidden to masonry to the top at one time
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According to the calculation, the height of inclined masonry is 15-20cm, and the angle of inclined masonry is 45 °- sixty ° At the same time, the diagonal brick has the largest supporting effect on the wall
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Therefore, our team requires the construction team to strictly control the above two indicators
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If the height is not enough, the block must be cut
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It is strictly forbidden to insert bricks horizontally
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3
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Control the masonry construction sequence, control the masonry construction sequence, and masonry the wall from top to bottom, so as to reduce the influence of the upper uneven load on the wall
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The effect of masonry from top to bottom: there is no crack between the top of the masonry infilled wall and the roof or beam, there is no settlement inclined crack on the surface of the wall, and the integrity of the wall is maintained well
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③ In view of the fact that there are many secondary openings in the installation engineering, 1bim modeling is used for pipeline pre layout
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BIM software is used to model the building under construction, and the cable tray, pipeline, air duct and other direction, elevation and relative position are simulated in advance
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The conflicting parts should be modified in advance, and the position of the reserved hole in the wall should be adjusted to reduce the probability of secondary opening in the later period
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Modeling 2
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Improving the method of secondary opening in installation engineering 1
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Setting out and positioning in advance
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2
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Use toothless saw to cut on both sides along the hole edge
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3
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The 50 diameter water drill is used to open holes evenly along the edge of the hole with a distance of 5cm
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4
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The area between the holes drilled by the water drill is gently picked manually
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Implementation effect of water drilling hole schematic diagram: the number of secondary openings of infilled wall is greatly reduced, and the integrity and stability of the block around the opening of the secondary opening are not damaged
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Through a series of measures for the common quality problems of masonry engineering, the qualified rate of infilled wall masonry is improved, and the actual effect has reached the standard of structural quality engineering
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This project wall masonry site photos source: Network Collection Statement: This article is only for learning! We are committed to protecting the author’s copyright, only for the dissemination and sharing of knowledge, without any other commercial profit
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