CN1676812A

CN1676812A - Slope roofing lawn

Info

Publication number: CN1676812A
Application number: CNA2005100247999A
Authority: CN
Inventors: 王兆龙; 朱燕华; 李洁; 刘一明; 殷朝珍
Original assignee: Shanghai Jiaotong University
Current assignee: Shanghai Jiaotong University
Priority date: 2005-03-31
Filing date: 2005-03-31
Publication date: 2005-10-05
Anticipated expiration: 2025-03-31
Also published as: CN100494599C

Abstract

A kind of slope-face roof lawn comprises waterproof layer, slope-face roof fixation tray, moisture self-restraint layer, level ground bed matrix layer and lawn plant. The waterproof layer is paved above the slope-face roof, on the waterproof layer pave the slope-face roof fixation tray which is shaped as the inside concave-like step-type, to the under side is the straight surface, to the up side is the flute formed by turn-up arc-surface, on the fixation tray pave the self-restraint layer formed by water-contain material, on the moisture self-restraint layer pave the level ground bed matrix layer, on which grow the lawn plant. The invention has the simple structure and can be achieved easily, the special design of the slope-surface roof fixation tray can effectively induce the leakage of the moisture in the earth matrix and give the matrix a effective support, and can also contain the slope-face roof level ground bed matrix and the moisture distributed evenly, and ensure the growth of the roof lawn.

Description

Slope roofing lawn

Technical field

The present invention relates to a kind of slope roofing lawn, can overcome since the level ground bed substrate that causes of roof pitch move down with the level ground bed substrate in the drought defective of stain, skewness down on the moisture, belong to the roof greening field in the ecotecture.

Background technology

Along with quickening of urbanization process, urban ecological environment has become the restriction factor of restriction China urban sustainable development, the city because of building and densely populated, the heat extraction machine is various, has caused serious day by day city " heat island ".Green plants is one of most important measure of alleviating urban heat island effect, and plant constantly absorbs a large amount of heats by transpiration from surrounding environment, thereby has reduced the temperature of air.According to measuring and calculating, the effect that it is 1000 watts air-conditioning that the heat that the per hectare green plants absorbs from environment every day is equivalent to 1890 power.Roof greening not only has and purifies air, alleviating urban heat island effect, slows down general greening effects such as rainfall runoff, concerning building, also have heat insulation temp regulating function of Winter protection, summer, therefore become the important component part of urban ecology building.

Because the restriction of roof weight capacity, the soil matrix layer of roof greening is generally thinner, the root growth of Green Roof Plants has been subjected to great limitation, and green plants is planted on the roof of reinforced concrete, irrigate and also be subjected to certain restriction, therefore require green plants to have extremely strong drought-enduring performance; In addition, the wind effect suffered owing to high-rise roofing is also bigger, and the plant that trees and some canopies comparatively catch the wind lodges easily, is unwell to roof greening.Therefore, Green Roof Plants is selected the stronger Crassulaceae succulent plant of some drought resistances mostly for use at present, as: stonecrop, tubular-leaf kalanchoe laciniata etc.But Crassulaceae succulent plants such as stonecrop also have its significant disadvantages: the one, and its stand density is lower, and the solid native ability of root system is relatively poor; The 2nd, its thermal extremes and freezing point temperature adaptive capacity in winter to summer is limited, tangible dormancy phenomenon all can occur with winter in full summer, and blade is withered during dormancy, not only influences view, and causes soil directly exposed, occurs the phenomenon of dust storm easily.The stand density height of lawn plant; root system that it is powerful or stolon can be fixed the particle of all soil effectively; while performance stability throughout the year; even warm-season turfs such as Korea lawn grass also can form fine and close covering layer in the winter time during dormancy; roofing is effectively protected; therefore, lawn plant becomes the main plant of roof greening just gradually.

Compare with the roof, plane, the greening difficulty on domatic roof is bigger, requires also higher to the solid native ability of green plants and stable performance throughout the year.Because there is bigger gradient on domatic roof, and since gravitational effect, the phenomenon that green plants cultivation matrix or soil can occur moving down gradually, thus cause ridge place soil matrix more and more thinner, and the more and more thicker phenomenon in eaves place; In addition, the moisture in the matrix also is to flow from the top down, and severe drought appears in geographical position higher ridge zone easily, gently then causes roof greening plant growing inequality, influences view, and is heavy then farmland running to weeds and soil to occur exposed.

(number of patent application: 03139997.5 such as Liu Shizhong, the day for announcing: on April 7th, 2004) the roof greening practical technique of having invented a kind of tubular-leaf kalanchoe laciniata: make the simple and easy framework of 30-50cm matrix pattern with fillet, with frame fixation on the roof, spread humus soil, sandy soil mixture growth substrate inside, then tubular-leaf kalanchoe laciniata is planted in the matrix as plant.Though this method can be fixed growth substrate on domatic roof, solve the problem that matrix moves down, but to the skewness of moisture without any improvement, and the batten framework has caused formative green plants planting patterns, the plant planeness of roofing is relatively poor, can not reach 100% vegetation covering and green percentage.

Summary of the invention

The objective of the invention is at existing level ground, domatic roof bed substrate move down easily with the level ground bed substrate in the drought defective of stain, skewness down on the moisture, a kind of simple slope roofing lawn is provided, can effectively fix the level ground bed substrate on domatic roof, and make up and down each position water moisture self restraint equably of roof, thereby reach the unanimity of roofing lawn growth.

In order to realize such purpose, the slope roofing lawn of the present invention's design comprises waterproofing course, domatic roof fixed disk, moisture self-restraint layer, level ground bed soil matrix layer and lawn plant.At first lay one deck waterproofing course on the domatic roof, arrange again above the waterproofing course and lay domatic roof fixed disk, fixed disk is the step-like of indent formula, the downward side of fixed disk is for facing directly, a side upwards is that the arcwall face that is upturned constitutes arc groove, lay water-keeping material above the fixed disk and constitute moisture content self-restraint layer, on moisture content self-restraint layer, lay level ground bed soil matrix layer, turf plant plant on the bed soil matrix layer of level ground.

The domatic roof fixed disk that the present invention lays on domatic roof can be made by duroplasts, its side that makes progress is designed to arcwall face, after being laid on domatic roof, the groove that the arcwall face of fixed disk constitutes will form the self-restraint district of a moisture, the moisture that oozes down from the bed substrate of level ground, lawn can be trapped in one by one in the groove equably, the following of moisture content oozes in the matrix thereby effectively alleviate, lay one deck suction and the stronger water-keeping material of water retaining capacity above the plastics fixed disk, cover the arc groove of fixed disk, constitute moisture content self-restraint layer.The fixed disk arcwall face that is upturned can play effective supporting to level ground, lawn bed substrate, the fibrous root system that adds the lawn prosperity is to fixation in soil, can overcome level ground bed soil matrix effectively owing to moving down that action of gravity produces, keep the uniformity of root soil matrix unit weight.

Of the present invention simple in structure, realize easily, by on domatic roof, laying domatic roof fixed disk, and the arc groove and the stronger water-keeping material of water-absorbing-retaining ability that utilize fixed disk to be upturned constitute moisture content self-restraint layer together, guaranteed the uniformity of moisture content in top, domatic roof and the bottom soil matrix, also effectively alleviate simultaneously the too fast arid problem that causes of domatic roof moisture content loss, guaranteed the growth of roofing lawn, had the prospect of applying.

Description of drawings

Fig. 1 is the cross-sectional view of slope roofing lawn of the present invention.

Among Fig. 1,1 is lawn plant, and 2 is level ground bed soil matrix layer, and 3 is domatic roof fixed disk, and 4 are moisture self-restraint layer, and 5 is waterproofing course, and 6 is eaves, and 7 is drainage channel, and 8 is domatic roof.

The specific embodiment

Below in conjunction with accompanying drawing technical scheme of the present invention is further described.

Slope roofing lawn result of the present invention mainly comprises waterproofing course 5, domatic roof fixed disk 3, moisture self-restraint layer 4, level ground bed soil matrix layer 2 and lawn plant 1 as shown in Figure 1.Waterproofing course 5 is laid on the domatic roof 8, arrange to lay domatic roof fixed disk 3 on waterproofing course 5, fixed disk 3 is the step-like of indent formula, and the downward side of fixed disk 3 is for facing directly, the arcwall face that a side upwards is designed to be upturned, the arcwall face of each row's fixed disk 3 constitutes a groove.On fixed disk 3, lay the arc groove that one deck water-keeping material covers fixed disk, constitute moisture content self-restraint layer 4.On moisture content self-restraint layer 4, then directly lay one deck level ground bed soil matrix layer 2, turf plant plant 1 on the bed soil matrix layer 2 of level ground.Drainage channel 7 is arranged on the lower of eaves 6.

Among the present invention, waterproofing course 5 can adopt the thick plastic film of fluid-tight PVC, be laid immediately on the domatic roof 8, on waterproofing course 5, lay domatic roof fixed disk 3 then, the side that fixed disk 3 makes progress is designed to arcwall face, because the gradient on the most of roofs of China is about the 30-40 degree, the arcwall face of the fixed disk 3 after the laying has then formed the 5-15 degree and has been upturned, the groove that the arcwall face perk constitutes can be held back the moisture that oozes down in the bed substrate of level ground, lawn, the moisture basically identical that each lattice is held back, guarantee the uniformity of moisture content in top, domatic roof and the bottom soil matrix, also effectively alleviated the too fast arid problem that causes of domatic roof moisture content loss simultaneously.On the plastics fixed disk, lay the arc groove that one deck water-keeping material covers fixed disk, constitute moisture content self-restraint layer 4, the water-keeping material that moisture content self-restraint layer 4 can adopt suction and strong macromolecular material flower mud, peat and the perlite mixed-matrix of water retaining capacity to constitute, and exceed fixed disk 2-5cm, can keep the circulation of moisture content.On moisture content self-restraint layer 4, then can directly lay thick level ground, the light-duty lawn bed soil matrix layer 2 of one deck 10-15cm, level ground bed soil matrix layer 2 can be gathered materials on the spot, but with peat or better with the matrix that 1: 1 ratio is made into through the rice husk, wood sawdust and the rough sand that become thoroughly decomposed, directly sod greening with straight shop method on the bed soil matrix of level ground and use lawn plant 1, because domatic roof is difficult to maintenance management, the Korea lawn grass that lawn plant 1 can be adopted poor growth, need not be managed.

Claims

1, a kind of slope roofing lawn, it is characterized in that comprising waterproofing course (5), domatic roof fixed disk (3), moisture self-restraint layer (4), level ground bed soil matrix layer (2) and lawn plant (1), waterproofing course (5) is laid on the domatic roof (8), arrange above the waterproofing course (5) and lay domatic roof fixed disk (3), fixed disk (3) is the step-like of indent formula, the downward side of fixed disk (3) is for facing directly, a side upwards is that the arcwall face that is upturned constitutes groove, lay the arc groove that water-keeping material covers fixed disk above the fixed disk (3), constitute moisture content self-restraint layer (4), on moisture content self-restraint layer (4), lay level ground bed soil matrix layer (2), level ground bed soil matrix layer (2) is gone up turf plant plant (1), and drainage channel (7) is arranged on the lower of eaves (6).

2,, it is characterized in that the arcwall face of described fixed disk (3) is upturned for the 5-15 degree according to the slope roofing lawn of claim 1.

3, according to the slope roofing lawn of claim 1, it is characterized in that the water-keeping material that described moisture content self-restraint layer (4) adopts macromolecular material flower mud, peat and perlite mixed-matrix to constitute, moisture content self-restraint layer (4) exceeds fixed disk (3) 2-5cm.

4, according to the slope roofing lawn of claim 1, it is characterized in that level ground, described lawn bed soil matrix layer (2) adopts peat or is made into through the rice husk, wood sawdust and the rough sand that the become thoroughly decomposed ratio with 1: 1, laying depth is 10-15cm.

5,, it is characterized in that described lawn plant (1) is a Korea lawn grass according to the slope roofing lawn of claim 1.