-
Anonymous users2024-02-07There are two kinds of general formwork support method and stereotyped formwork wall formwork, and the general formwork support method is composed of a template support system composed of side plate, stand, rung, diagonal brace and horizontal brace; The formwork wall formwork system is composed of steel-wood shape-setting plate plus horizontal brace and counter-pin bolts.
Precautions should be paid to the installation of the template.
1) the supporting part of the vertical formwork and the support, when installed on the base soil, a backing plate should be added, and the base soil must be solid and have drainage measures, and there must be waterproof measures for collapsible loess; For frost heave retaining soil, anti-freeze-thaw measures must be taken.
2) During the installation of the formwork and its support, temporary fixing facilities for anti-tilting must be provided.
3) Cast-in-situ multi-storey houses and structures should adopt the method of segmented formwork, and the installation of upper formwork and its support should comply with the following provisions:
The lower floor slab should have the bearing capacity to bear the load of the upper layer or be supported by brackets;
The column of the upper layer support should be aligned with the column of the lower layer support, and a backing plate is laid;
When the suspension formwork and truss formwork support method are adopted, the bearing capacity and stiffness of the supporting structure must meet the requirements.
-
Anonymous users2024-02-06The difficulty lies in how to remove the expansion joint formwork.
It can be combined with the floor flow water and divided into two formwork.
One side of the concrete is poured and the mold is dismantled for about a day, and the other side of the formwork is supported after the end is removed.
The other side is equipped with a large template, the back steel and wood square, the screws are locked from the inside, and when the mold is removed, it is pulled up with a tower crane.
It's not easy to clean up 25cm foam.
-
Anonymous users2024-02-05Expansion joints can be filled with foam panels, concrete can be poured, and foam panels can be pulled out.
-
Anonymous users2024-02-04The template is 10cm wood, which can fully support the template.
-
Anonymous users2024-02-03The width of the expansion joint is generally 20 mm to 30 mm, the joint is filled with insulation material, and the spacing between the two expansion joints is clearly specified in the building structure code.
Building expansion joint, also known as expansion joint, refers to a structural joint set up along the appropriate part of the direction of the construction joint of the building or structure in order to prevent cracks or damage to the structure due to climate and temperature changes (thermal expansion and cold contraction).
Expansion joints are to divide the building components above the foundation, such as walls, floors, roofs (except wooden roofs), into two independent parts, so that the building or structure can be expanded horizontally along the long direction.
Construction requirements. 1) It can be freely expanded and contracted in both directions parallel to and perpendicular to the axis of the bridge;
2) Strong and reliable;
3) The vehicle should drive smoothly, without sudden jump and noise;
4) Waterproof and prevent debris from penetrating and blocking;
5) Installation, inspection, maintenance, and elimination of dirt should be simple and convenient.
Control points. 1. If the embedded steel bar on the beam plate is not in the right position or is leaked and buried, it is necessary to use the method of planting reinforcement to fill the steel bar.
2. Clean up after cutting, and anchor the link.
3. The weld of the steel bar should be sufficient, and the welding should be firm.
4. The surface elevation of concrete should be correct to prevent jumping.
5. The expansion joint is anchored firmly and does not loosen, and the expansion performance is effective.
6. The curing time of concrete should be sufficient, and the traffic should not be opened because of insufficient curing time.
-
Anonymous users2024-02-02The expansion joint starts from the top surface of the foundation and disconnects the wall, floor and all components. Because the foundation is buried in the ground, it is less affected by the temperature and does not have to be disconnected. The width of the expansion joint is generally 20 30mm
-
Anonymous users2024-02-01The width of the expansion joint is generally 20 100mm
Installation location: The setting spacing is related to the type of roof and floor, and the maximum spacing is generally 30 75m.
Setting requirements: The expansion joint starts from the top surface of the foundation and disconnects all the components of the wall, floor and roof, and the foundation does not have to be disconnected.
-
Anonymous users2024-01-311.Expansion joint.
It refers to the expansion (expansion) joint of the concrete structure, which is a kind of structural joint, the purpose of which is to reduce the cumulative influence of indirect effects such as temperature difference and volume change, and divide the concrete structure into smaller units to avoid causing large restraint stress and cracking.
The maximum spacing of expansion joints in block houses.
2.Among the seismic measures, a gravity retaining wall built on the same soil layer.
The spacing of expansion joints should not be greater than 15m
3.Maximum spacing of expansion joints.
Maximum spacing of expansion joints.
-
Anonymous users2024-01-30The width of the expansion joint is generally 20 30mm
Expansion joint. Setting part: The setting spacing is related to the type of roof and floor slab, and the maximum spacing is generally 50 75m.
Setting requirements: The expansion joint starts from the top surface of the foundation, and disconnects all the components of the wall, floor and roof spike, and the foundation does not have to be disconnected. The width of the expansion joint is generally 20 30mm
Settlement joints. Location: The corner of a building with a complex plan;
Where there is a large difference in the height or load of the building;
Differences in structure type or foundation type;
There is uneven settlement in the foundation soil layer;
The joints of the houses built at different times.
Setting requirements: its width is related to the foundation condition and building height, generally 20 30mm, in the weak foundation of the five-story hall such as the above building its joint width should be appropriately increased.
The superstructure and foundation at the settlement joint must be completely disconnected.
-
Anonymous users2024-01-29The width of the expansion joints in the building is 20 to 30 mm.
Building expansion joint, also known as expansion joint, refers to a structural joint quietly set up along the appropriate part of the direction of the construction joint of the building or structure in order to prevent the building components from cracking or destroying the structure due to climate and temperature changes (thermal expansion and cold contraction). The expansion joint is to divide the building components above the foundation, such as walls, floors, roofs (except for wooden roofs), into two independent parts, so that the building or structure can be horizontally expanded and contracted along the rectangular mu.
The length of the expansion joint, the height of the façade, is the height of the expansion joint to be set in the building, such as the expansion joint on the wall, and the length of the plane is the length of the expansion joint to be set in the building, such as the expansion joint on the roof. >>>More
The method of settling joints is post-pouring tape.
Leave it in the part with less stress, the steel bar passes as usual, and the pouring belt should be reinforced after the foundation settles. If you are afraid that the effect of the foundation post-pouring belt is not good, the concrete should be covered with a formwork after pouring to prevent debris from being filled. A more effective way is to excavate 50cm more after excavation, and the sundries do not need to be picked up directly to pour the full completion. >>>More
1.Seamless expansion joint: When the joint structure does not extend out of the bridge deck, the expansion gap at the end of the bridge is filled with elastic material and covered with waterproof material. >>>More
It is extremely important to properly select the appropriate amount of expansion and contraction, and the larger the gap, the more likely it is to be damaged. The gap used is too large or too small, and the gap is not adjusted taking into account the temperature at the time of installation. Especially for plate rubber telescopic devices, it is easy to cause damage. >>>More
Settlement joint: In order to prevent the destruction of the house caused by the uneven settlement of all parts of the building, the vertical joint is called the settlement joint. Building expansion joint, also known as expansion joint, refers to a structural joint vertically set up along the appropriate part of the length direction of the house in order to prevent cracks or damage to the structure due to climate and temperature changes (heat expansion, cold contraction). The expansion joint is to divide the building components above the foundation, such as walls, floors, roofs (except wooden roofs), into two independent parts, so that the building can be expanded horizontally along the long direction.