In traditional wall formwork, through-wall tie rods connect the two sides of the formwork and help resist the lateral pressure generated by fresh concrete.
However, in a single-sided formwork system, there is no opposing side formwork, so the load is primarily transferred through the following three parts:
The formwork panel bears the lateral pressure generated by the fresh concrete;
The single-sided bracket transfers the horizontal load downward through the support framework;
The anchoring system ultimately transfers these forces to the base plate or the already completed foundation structure.
Therefore, during concrete pouring, the bracket not only needs to resist horizontal displacement but also must resist the overturning moment generated by the system.
The design of the anchoring system is particularly important because, in the case of high walls or faster pouring speeds, fresh concrete may generate significant lateral pressure.
Lianggong's Single-side Bracket system mainly consists of formwork, single-sided brackets, and an anchoring system, forming a clear and complete load transfer system for single-sided wall construction.
Standard double-sided wall formwork usually connects the two sides of the formwork with through-wall tie rods, allowing both sides to jointly resist the pressure generated by concrete.
However, in single-sided formwork, this constraint is borne by external brackets and the foundation anchoring system, thus eliminating the need for tie rods to pass through the newly poured concrete wall.
This is particularly valuable for structures with waterproofing requirements.
Traditional through-wall tie rods create holes in the wall, which usually require plugging and waterproofing after formwork removal. Eliminating through-wall tie rods can reduce such weak spots, help simplify waterproofing construction, and improve the overall waterproof continuity of basement walls and water storage structure walls.
Lianggong also considers the elimination of through-wall tie rods as one of the important advantages of its single-sided bracket system in waterproof wall construction.
When site conditions do not allow workers to install formwork on the back side of the wall, single-sided formwork is typically the most advantageous.
Typical applications include:
Basement exterior walls
Retaining walls
Subways and underground structures
Sewage treatment plants
Deep foundation pit walls
Road and bridge slope protection
Concrete walls constructed adjacent to existing buildings or soil
In these scenarios, there may be soil, foundation pit boundaries, rock walls, or existing buildings behind the wall, making it impossible to set up traditional double-sided formwork.
Single-sided formwork allows the entire formwork and support system to be arranged on the operable side, thereby addressing the issue of insufficient construction space.
The allowable single pouring height depends on several factors, including:
Bracket structure type
Anchoring capacity
Formwork system strength
Concrete pouring speed
Fresh concrete lateral pressure
Project engineering calculation results
Lianggong's truss-type Single-side Bracket can combine standard and elevated frames according to wall height, with a maximum single pouring height of 7.5 m.
However, this does not mean that all projects are suitable for directly adopting the maximum pouring height.
As the wall height increases, the load on the formwork, bracket, and anchoring system also increases. Therefore, before determining the actual pouring height, professional calculations need to be performed based on concrete lateral pressure, pouring speed, and site conditions.
Lianggong's single-sided brackets mainly include two structural forms.
The truss-type system can combine standard and elevated frames based on actual wall height.
This structure is more suitable for higher walls and construction environments with high support capacity requirements, and can achieve a larger single concrete pouring height.
The inclined brace system uses a relatively simplified support structure, which is more beneficial for:
Quick installation
Quick disassembly
Transportation
Storage
On-site turnover
When selecting, wall height, concrete lateral pressure, site space, lifting conditions, transportation requirements, and expected turnover times should be comprehensively considered.
Yes. Because there is no need to set through-wall tie rod holes, single-sided formwork can significantly simplify waterproof wall construction.
Therefore, this system is particularly suitable for:
Basement exterior walls
Water treatment structures
Underground facilities
Retaining structures affected by groundwater
However, the final waterproof effect does not solely depend on the formwork system.
The overall waterproof performance of the wall is also related to the following factors:
Concrete quality
Construction joint design
Waterstop
Rebar joint design
Concrete curing
External waterproof system
Therefore, formwork selection is just an important part of the overall waterproof design.
Professional single-sided formwork exporters should not just quote and select based on wall height when making a plan.
Contractors are best to provide the following project information:
Wall height and thickness
Total wall length
Concrete pouring speed
Concrete mix ratio and temperature
Foundation or base plate structure information
Available anchoring positions
Formwork panel type
Crane capacity
On-site construction space
Target construction cycle
Among them, anchoring force and bracket spacing are engineering parameters that need to be determined according to the actual project situation, rather than fixed values.
Providing accurate construction drawings to suppliers helps design a safer and more economical single-sided formwork solution.
Single-sided formwork does not require through-wall tie rods, mainly relying on formwork panels, single-sided brackets, and foundation anchoring systems to safely transfer the lateral pressure generated by fresh concrete to the bottom structure.
Its main advantages include:
Concrete wall construction can be completed in environments where only single-sided construction is possible
Reducing wall perforations and improving the continuity of waterproof structures
Effectively transferring lateral pressure generated by fresh concrete
Suitable for underground and narrow construction environments
Capable of meeting construction needs for basements, retaining walls, subways, etc.
For basement walls, retaining structures, subway engineering, and other high lateral pressure wall construction projects, single-sided formwork systems should be specially designed based on wall height, concrete pressure, anchoring capacity, and site conditions, rather than just selected based on bracket size.
Yes. A reasonably designed single-sided bracket system can transfer concrete lateral pressure to the base plate or foundation anchoring points, eliminating the need for tie rods to pass through the wall.
Because the back of the basement exterior wall usually has limited space, even close to soil or retaining structures, making it impossible to install the other side formwork. Single-sided formwork can complete installation and support entirely from the operable side.
Yes. The anchoring system is an important part of the single-sided formwork, used to transfer concrete lateral pressure and prevent the bracket from sliding or overturning.
Lianggong's truss-type single-sided bracket can reach a maximum single pouring height of 7.5 m, but the actual height still needs to be designed according to engineering conditions.
Yes. Especially when the boundary of the foundation pit, soil, or existing structures prevent simultaneous formwork on both sides of the wall, single-sided formwork is a common solution.
