CN106401087B - Roof greening covers system and fixing means with latticed software roofing - Google Patents

Abstract

The grid-like soft roof covering system and fixing method for roof greening of the invention belong to the roof greening renovation technology of existing buildings, and are a fixing device for installing potted green plants on the roofs of existing buildings. The invention can be applied to existing buildings with different roof shapes. Through convenient on-site assembly and construction, the invention provides a kind of roof greening, improving greening area, assisting the construction of sponge city and improving the quality of people's living environment. A fixing device that can effectively fix the roof green trough. For the promotion of greening on the roofs of existing buildings, it will be a low-cost, convenient, fast and safe structural fixing method.

Description

Grid-like soft roof covering system and fixing method for green roof

technical field

The invention belongs to the technical field of roof greening.

The present invention relates to citing prior priority, Chinese utility model prior application: patent title "Roof Greening Fixture for Existing Pitched Roof Buildings", patent application number 201620646981 1, application date June 27, 2016.

Background technique

With the accelerating pace of urban construction, urban land is also decreasing day by day, the green area of urban ground is also becoming increasingly tight, and the urban environment is deteriorating day by day, people's demand for good air quality is becoming more and more urgent. The original greening environment has been difficult to meet people's needs, which requires us to carry out secondary greening in the existing state as much as possible. Planting green plants on the roof of existing buildings is a better urban renewal model.

In the field of green roofs, the construction of green roofs needs to solve a series of problems such as roof load-bearing, waterproofing, greening construction and maintenance. Therefore, the current domestic implementation of roof greening is mainly based on the combination of new or renovated buildings, and the integrated design of building roofs and greening. A large number of technical research and development are carried out for this construction requirement. However, for the huge number of existing buildings in the city, due to the harsh roof load-bearing conditions, the preservation requirements of the original waterproof layer, and various constraints on the construction and maintenance of greening, only light-weight, low-maintenance simple structures can be used. Planting roofs, especially modular planting troughs that are easy to construct.

For existing buildings with low-floor flat roofs, modular planting troughs can be laid directly on the roof without reinforcement. However, if the floor is high, especially the sloping roof, the necessary fixing of the planting trough is required. The main technical bottleneck is how the installation and reinforcement of the planting trough can flexibly match different roof shapes, especially sloping roofs with different slopes, and Make sure not to damage the original roof waterproofing.

SUMMARY OF THE INVENTION

In order to overcome the deficiencies of the prior art, one of the objects of the present invention provides the prior priority technical scheme, and the technical scheme is characterized as:

A roof greening fixing device for an existing sloping roof building is characterized in that it is designed as a grid-like roof covering to fix the roof greening planting trough; specifically, it includes a cable, a spacer bonded to the ridge, and a plurality of end fixings. components; each fixing component is installed at the position of the eaves; the cable includes several main cables, several secondary cables and several oblique cables, and each main cable is routed along the direction of the roof slope, and the two ends are tightened and tied to the eaves fixed components On the main cable, fix the secondary cables equidistantly to form a grid with the same size as the planting trough; place the planting trough in the grid, and the planting trough is in contact with the roof; at the connection between the main cable and the secondary cable Install the cable-stayed cables crosswise.

The fixing components are eaves clips or ring expansion bolts. When the object is a double-pitched roof, the eaves clips can be used on both sides of the eaves to fix the cables; when the object is a single-slope roof or it is not suitable for installing the eaves clips, the expansion bolts with rings can be used instead of the eaves clips to fix the cables.

Further optimization, place pre-cast concrete blocks at the ridge of the sloping roof, the ridge pad for the main cable, the surface of the ridge pad has grooves along the roof slope, the main cable is along the roof slope, and the middle section is embedded in concrete Block grooves, both ends are tensioned and tied to the fixed members of the eaves.

The second purpose of the present invention is to overcome the deficiencies of the prior art, and for the first time proposes a grid-like soft roof covering system and a fixing method for roof greening, which can be greened on the existing building roofs, greatly increase the greening area of the city, and provide an excellent service for the city. The development provides a convenient and quick way of air purification and rainwater absorption. The technical solution of the present invention is characterized as:

A grid-like soft roof covering system for roof greening is characterized in that, by designing a "quilt-type" grid-like soft roof covering system for roof greening, different roof forms can be flexibly matched; The support member is raised to provide multiple fulcrum points in the system at the same time; the fixing member at the edge setting end of the covering system is used to provide the attachment fulcrum at the edge of the system; the covering system is provided with a grid structure to fix the green roof planting groove (6 in the figure), and do not damage the existing roof waterproof layer and other structural layers.

The covering system includes a cable system, a raised support member and an end fixing member (5 in the figure); the raised support member can be realized by a prefabricated cushion (4 in the figure), wherein:

The cable system includes several overhead cables (1 in the figure), several secondary cables (2 in the figure) and several stay cables (3 in the figure), the materials of which can be rigid or with insignificant deformation under tension. Plastic materials or their mixtures; each main cable is routed along the slope of the roof, and the spacing is required by the size of the planting trough. Design: Fix the secondary cables equidistantly on the main cable to form a grid with the same size as the planting trough; place the planting trough in the grid, and the planting trough is in contact with the roof; the connection between the main cable and the secondary cable Then install the stay cable crossly at the place, and press the planting trough to the roof.

The fixed member at the end (5 in the figure) can be an eaves clip or a ring expansion bolt, etc., used for overhead and fixing cables: when the object is a double-slope roof or a single-slope roof with an eaves, the eaves can be used at the eaves. The buckles fix the cables. For the sake of beauty, the buckles can be integrated with the rain gutters of the cornices; when the object is a sloping roof with one side connected to the vertical wall or other installations that are not suitable for the installation of the roof buckles, it can be installed on the vertical wall. The expansion bolt with ring is placed on the surface to replace the eaves clip to fix the cable.

Elevated support members (preferred design: can be prefabricated) are used for overhead, fixing cables and dispersing the pressure of the system on the roof.

Further optimization, place the support member at the ridge of the sloping roof (4 in the figure, it is a pre-cast concrete block with grooves along the direction of the roof slope, or it can be a pre-processed stainless steel or aluminum member, etc.) , to overhead, fix the main cable and disperse the concentrated pressure on the ridge.

For further optimization, if the roof span is large or the form is specific, the support members can be reinforced along the cable direction on the roof to further assist in the overhead, fix the cable system and disperse the concentrated pressure on the roof ridge.

For further optimization, if the existing roof is a warped variable-slope roof, a connecting piece (7 in the figure) should be installed at the junction of the cable, which can effectively fix the cable end and allow the entire cable to deform in sections. Structural parts can make the whole system fit the warping shape of the roof by the self-weight of the planting trough, and should be specifically designed according to the warping of the roof and the size of the cables.

The system design principle of the present invention: through the deformable structural design, the entire grid-like roof covering system can fit different slopes or even warped roof shapes, and flexibly match various constant-slope or variable-slope roofs. The design of the overall stress system makes full use of the structural conditions of the existing building roof, the gravity of the planting trough itself and its friction with the roof, and uses its own mechanical balance to reduce and disperse the actual stress intensity of each part of the entire fixture system. Therefore, a certain strength of the cable can be used to bear the sliding force of the planting groove parallel to the slope direction of the roof plane through tension, and it can be fixed by the buckle device, so that the whole device does not need to damage the existing waterproof structure layer of the roof, but also can bear the sliding force. The wind suction generated by the wind load on the roof ensures the safety of green roof implementation.

The beneficial effects and significance of the technology of the present invention: it is expected to play the following roles in urban development: (1) there are many old-style houses without roof gardens in the city, and the new load of the present invention for roof greening is small , it can basically be implemented on the roofs of these houses; (2) if the existing buildings are flat roofs, the greening provided by the present invention will be easier to implement; if it is a sloping roof or other special-shaped roofs, the present invention provides a simple and easy to implement (3) In Shanghai and other big cities, in the early years, the existing buildings have been renovated with sloping roofs, which have basically reached the maintenance period, and can make full use of this opportunity to carry out roof greening; (4) the technology of the present invention The green roof provides a certain water storage capacity, which fully conforms to the development idea of the sponge city promoted by the state.

Description of drawings

Figure 1 is a schematic diagram of the force of the planting trough of the double-slope roof.

Figure 2 is a schematic diagram of the stress on the ridge member.

Figure 3 is a schematic diagram of the force of the cornice member.

Fig. 4 is a top view (construction plane) of Example 1 (small-span equi-pitched roof).

FIG. 5 is a cross-sectional view at I-I of FIG. 4 .

Figure 6 shows the first step in the installation step diagram: place the ridge prefabricated parts, and install the eaves clips (separate clips).

Figure 7 shows the second step in the installation steps diagram: install the main cable, tighten and fix it.

Figure 8 shows the third step in the installation steps diagram: install the secondary cable and place the planting groove.

Figure 9 shows the fourth step in the installation steps diagram: install the stay cable and fix the planting groove.

FIG. 10 is a top view of the schematic structural diagram of the connecting member 7 at the intersection of the stay cables in Example 2 (warped roof with small span and one-way variable slope).

FIG. 11 is a side view of a schematic structural diagram of the connecting member 7 at the intersection of the stay cables in Example 2 (warped roof with small span and one-way variable slope).

FIG. 12 is an isometric view of a schematic diagram of the structure of the connecting member 7 at the intersection of the stay cables in Example 2 (warped roof with small span and one-way variable slope).

Fig. 13 is a schematic diagram of Example 2 (warped roof with small span and unidirectional slope).

Detailed ways

The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

Example 1 (Small-span equal-pitched roof)

As shown in Figure 4-Figure 9, the construction implementation process:

Firstly, according to the size of the roof greening planting trough, the layout plan of roof greening is given.

According to the roof greening layout plan, a prefabricated part 4 that fits the ridge is placed at the ridge of the sloping roof (in this example, the concrete is pre-cast, the ridge prefabricated part 4), and a buckle is installed on the eaves (this embodiment 1 is a separate buckle, Needs to be aligned with the planting slot).

The main cable 1 is along the slope of the roof, and the middle section is embedded in the ridge prefab 4, and the two ends are tightened and fixed on the fixed member 5 (eaves clip). The height of the trough is adjusted, it is recommended to be slightly lower than the height of the planting trough. The fixing member 5 at the end of the cable is a detachable buckle in this embodiment. After being clipped into the eaves, it can be pressed and fixed with accessories such as bolts. Please refer to the force diagram of the eaves member in Figure-3.

The secondary cables 2 are equidistantly fixed on the main cable 1 to form a grid that is consistent with the size of the planting trough. The planting trough 6 is placed in the grid, the planting trough 6 is in contact with the roof, and the frictional force generated between the green roof planting trough and the roof plane can reduce the sliding force of the planting trough.

Finally, a group of stay cables 3 are installed crosswise at the connection between the main cable 1 and the secondary cable 2 to further fix the planting groove 6 and improve the safety of the entire device.

Example 2 (Small-span, one-way sloped warped roof)

The difference between the construction method and procedure and Example 1 is the installation of the main cable 1. It is necessary to cut several main cables according to the size of the planting trough, and use the connecting piece 7 at the junction of the cables to connect the main cables according to the total length of the roof slope direction. cable segment;

If the roof is two-way variable slope, the secondary cable 2 also needs to be cut in sections and connected to the connecting piece 7 in the vertical direction of the main cable.

The connecting piece 7 is shown in Fig. 10-Fig. 13: this embodiment is a one-way warped roof, and only needs to connect the main cable, so a bolt-pressed connecting piece is used, and four bolts 71 are used to fasten the two pieces. Piece pressing piece 72, after the pull cable passes through the bolt from the middle of the upper and lower pressure pieces, by tightening the bolt, the pressure piece is pressed against the pull cable to prevent slipping.

Above two embodiments, the whole system design is reasonable, scientific and feasible, and the force analysis of key points is shown in Figure 1-Figure 3, wherein:

The frictional force of the planting trough in contact with the roof can partially offset its sliding force (Figure 1); the sliding force of the planting trough on double slopes can also be offset by the tension balance of the main cable (Figure 2);

The prefabricated pads on the ridge can disperse the down pressure of the main cable and reduce the pressure on the ridge (Figure 2);

The fixing screw of the fixing member at the end of the cable can provide a frictional force with variable direction according to the actual force of the whole system at the end, and realize the fixing at the end together with the tension of the main cable (Figure 3).

Whether each stay cable is made of plastic material or rigid and plastic mixed material with insignificant rigidity or tensile deformation, it will not affect the flexible deformation of the entire grid-like soft roof covering and the performance of matching different roof shapes; The network formed by the cable connection can be completed at the construction site, or it can be pre-connected in the factory according to the actual design plan, and then installed and fixed at the construction site.

Claims (3)

1. A grid-shaped soft roof fixing device for roof greening is characterized in that, by designing a "quilt-type" grid-shaped soft roof covering system for roof greening, it is used to flexibly match different roof forms; Elevated support members are arranged inside the system to provide multiple fulcrum points in the system; fixed members are set at the edge of the covering system to provide attachment fulcrums at the edge of the system; the covering system is internally provided with a grid structure to green roofs The planting groove is fixed; The design of the overall stress system makes full use of the structural conditions of the existing building roof, the gravity of the planting trough itself and its friction with the roof, and uses its own mechanical balance to reduce and disperse the actual stress intensity of each part of the entire fixture system. , the cable is used to bear the sliding force of the planting trough parallel to the slope direction of the roof plane through tensioning, and it is fixed by the eaves buckle, so that the whole device does not need to damage the existing waterproof structural layer of the roof, and can also bear the wind load generated by the roof. Wind suction to ensure the safety of green roof implementation; The specific structure of the covering system is designed to include a cable system, a fixing member at the end and a support member for height; wherein: the cable system forms a grid for placing the planting trough and presses the planting trough on the roof; the fixing member at the end Eaves clips are used for overhead and fixed cables; prefabricated pads are used for the height support members to overhead, fix cables and disperse the pressure of the covering system on the roof. 2. The grid-like soft roof fixing device for green roofs as claimed in claim 1, wherein the cable system comprises several overhead main cables, several secondary cables and several stay cables; Wiring in the slope direction, the spacing is according to the size of the planting tank, and the two ends are tightened and fixed on the fixed member at the end; the secondary cable is fixed on the main cable to form a grid with the same size as the planting tank; the planting tank is placed on the grid Inside, the planting trough is in contact with the roof; relying on the connection of the main cable and the secondary cable, cross-install the stay cable to press the planting trough on the roof. 3. The grid-like soft roof fixing device for green roofs according to claim 1, characterized in that, if the object is a warped variable-slope roof, a connecting piece (7) should be installed at the junction of the cable, which is effective. The connecting structure that fixes the end of the cable and enables the entire cable to deform in sections, makes the whole system fit the warped shape of the roof by the weight of the planting groove; for example, when the object is a double-slope roof or a single-slope roof with eaves, The eaves clips are used to fix the cables at the eaves; the support members are placed at the ridge of the sloping roof to overhead and fix the main cables and to disperse the concentrated pressure on the ridge; when the roof span is large or the form When it is special, the support members are reinforced along the cable direction on the roof to further assist in the overhead, fix the cable system and disperse the concentrated pressure on the roof ridge.